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Check-in Number: 1675
Date: 2002-Jan-28 21:58:37 (local)
2002-Jan-28 20:58:37 (UTC)
User:ms
Branch:
Comment: Add pcre support to match perl compatible regular expressions.

PR: Submitted by: Reviewed by: Approved by: Obtained from:

Tickets:
Inspections:
Files:
ossp-pkg/rc/rc_pcre.c      added-> 1.1
ossp-pkg/rc/rc_pcre.h      added-> 1.1

ossp-pkg/rc/rc_pcre.c -> 1.1

*** /dev/null    Sat Nov 23 01:55:41 2024
--- -    Sat Nov 23 01:58:43 2024
***************
*** 0 ****
--- 1,4288 ----
+ /* 
+  *  Perl Compatible Regular Expression (PCRE) Library
+  *  Copyright (c) 1997-2001 Philip Hazel <ph10@cam.ac.uk>
+  *  Copyright (c) 1997-2001 University of Cambridge
+  *
+  *  DO NOT EDIT THIS FILE, IT WAS AUTOMATICALLY GENERATED!
+  *
+  *  This is an automatically generated, extremely stripped down
+  *  version of the PCRE 3.9 library from the Philip Hazel.
+  *  This version is still distributed under the same original PCRE
+  *  Open Source license, but Philip Hazel is no longer responsible
+  *  for this version.
+  */
+ 
+ /* 
+    This is a library of functions to support regular expressions whose syntax
+    and semantics are as close as possible to those of the Perl 5 language. See
+    the file Tech.Notes for some information on the internals.
+ 
+    Written by: Philip Hazel <ph10@cam.ac.uk>
+ 
+    Copyright (c) 1997-2001 University of Cambridge
+ 
+    -----------------------------------------------------------------------------
+    Permission is granted to anyone to use this software for any purpose on any
+    computer system, and to redistribute it freely, subject to the following
+    restrictions:
+ 
+    1. This software is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.
+ 
+    2. The origin of this software must not be misrepresented, either by explicit
+    claim or by omission.
+ 
+    3. Altered versions must be plainly marked as such, and must not be
+    misrepresented as being the original software.
+ 
+    4. If PCRE is embedded in any software that is released under the GNU General
+    Purpose Licence (GPL), then the terms of that licence shall supersede any
+    condition above with which it is incompatible.
+    ----------------------------------------------------------------------------- */
+ 
+ #ifdef HAVE_CONFIG_H
+ #include "config.h"
+ #endif
+ 
+ #include <ctype.h>
+ #include <limits.h>
+ #include <stddef.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include "rc_pcre.h"
+ 
+ #ifndef offsetof
+ #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
+ #endif
+ 
+ #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
+ 
+ #define PCRE_FIRSTSET      0x40000000
+ #define PCRE_REQCHSET      0x20000000
+ #define PCRE_STARTLINE     0x10000000
+ #define PCRE_INGROUP       0x08000000
+ #define PCRE_ICHANGED      0x04000000
+ 
+ #define PCRE_STUDY_MAPPED   0x01
+ 
+ #define PUBLIC_OPTIONS \
+   (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
+    PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8)
+ 
+ #define PUBLIC_EXEC_OPTIONS \
+   (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY)
+ 
+ #define PUBLIC_STUDY_OPTIONS 0
+ 
+ #define MAGIC_NUMBER  0x50435245UL
+ 
+ typedef int BOOL;
+ 
+ #ifndef FALSE
+ #define FALSE   0
+ #endif
+ #ifndef TRUE
+ #define TRUE    1
+ #endif
+ 
+ #ifndef ESC_E
+ #define ESC_E 27
+ #endif
+ 
+ #ifndef ESC_F
+ #define ESC_F '\f'
+ #endif
+ 
+ #ifndef ESC_N
+ #define ESC_N '\n'
+ #endif
+ 
+ #ifndef ESC_R
+ #define ESC_R '\r'
+ #endif
+ 
+ #ifndef ESC_T
+ #define ESC_T '\t'
+ #endif
+ 
+ enum { ESC_A = 1, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s, ESC_W, ESC_w,
+        ESC_Z, ESC_z, ESC_REF
+ };
+ 
+ enum {
+        OP_END,
+ 
+        OP_SOD,
+        OP_NOT_WORD_BOUNDARY,
+        OP_WORD_BOUNDARY,
+        OP_NOT_DIGIT,
+        OP_DIGIT,
+        OP_NOT_WHITESPACE,
+        OP_WHITESPACE,
+        OP_NOT_WORDCHAR,
+        OP_WORDCHAR,
+        OP_EODN,
+        OP_EOD,
+ 
+        OP_OPT,
+        OP_CIRC,
+        OP_DOLL,
+        OP_ANY,
+        OP_CHARS,
+        OP_NOT,
+ 
+        OP_STAR,
+        OP_MINSTAR,
+        OP_PLUS,
+        OP_MINPLUS,
+        OP_QUERY,
+        OP_MINQUERY,
+        OP_UPTO,
+        OP_MINUPTO,
+        OP_EXACT,
+ 
+        OP_NOTSTAR,
+        OP_NOTMINSTAR,
+        OP_NOTPLUS,
+        OP_NOTMINPLUS,
+        OP_NOTQUERY,
+        OP_NOTMINQUERY,
+        OP_NOTUPTO,
+        OP_NOTMINUPTO,
+        OP_NOTEXACT,
+ 
+        OP_TYPESTAR,
+        OP_TYPEMINSTAR,
+        OP_TYPEPLUS,
+        OP_TYPEMINPLUS,
+        OP_TYPEQUERY,
+        OP_TYPEMINQUERY,
+        OP_TYPEUPTO,
+        OP_TYPEMINUPTO,
+        OP_TYPEEXACT,
+ 
+        OP_CRSTAR,
+        OP_CRMINSTAR,
+        OP_CRPLUS,
+        OP_CRMINPLUS,
+        OP_CRQUERY,
+        OP_CRMINQUERY,
+        OP_CRRANGE,
+        OP_CRMINRANGE,
+ 
+        OP_CLASS,
+        OP_REF,
+        OP_RECURSE,
+ 
+        OP_ALT,
+        OP_KET,
+        OP_KETRMAX,
+        OP_KETRMIN,
+ 
+        OP_ASSERT,
+        OP_ASSERT_NOT,
+        OP_ASSERTBACK,
+        OP_ASSERTBACK_NOT,
+        OP_REVERSE,
+ 
+        OP_ONCE,
+        OP_COND,
+        OP_CREF,
+ 
+        OP_BRAZERO,
+        OP_BRAMINZERO,
+ 
+        OP_BRANUMBER,
+ 
+        OP_BRA
+ };
+ 
+ #define EXTRACT_BASIC_MAX  150
+ 
+ #define ERR1  "\\ at end of pattern"
+ #define ERR2  "\\c at end of pattern"
+ #define ERR3  "unrecognized character follows \\"
+ #define ERR4  "numbers out of order in {} quantifier"
+ #define ERR5  "number too big in {} quantifier"
+ #define ERR6  "missing terminating ] for character class"
+ #define ERR7  "invalid escape sequence in character class"
+ #define ERR8  "range out of order in character class"
+ #define ERR9  "nothing to repeat"
+ #define ERR10 "operand of unlimited repeat could match the empty string"
+ #define ERR11 "internal error: unexpected repeat"
+ #define ERR12 "unrecognized character after (?"
+ #define ERR13 "unused error"
+ #define ERR14 "missing )"
+ #define ERR15 "back reference to non-existent subpattern"
+ #define ERR16 "erroffset passed as NULL"
+ #define ERR17 "unknown option bit(s) set"
+ #define ERR18 "missing ) after comment"
+ #define ERR19 "parentheses nested too deeply"
+ #define ERR20 "regular expression too large"
+ #define ERR21 "failed to get memory"
+ #define ERR22 "unmatched parentheses"
+ #define ERR23 "internal error: code overflow"
+ #define ERR24 "unrecognized character after (?<"
+ #define ERR25 "lookbehind assertion is not fixed length"
+ #define ERR26 "malformed number after (?("
+ #define ERR27 "conditional group contains more than two branches"
+ #define ERR28 "assertion expected after (?("
+ #define ERR29 "(?p must be followed by )"
+ #define ERR30 "unknown POSIX class name"
+ #define ERR31 "POSIX collating elements are not supported"
+ #define ERR32 "this version of PCRE is not compiled with PCRE_UTF8 support"
+ #define ERR33 "characters with values > 255 are not yet supported in classes"
+ #define ERR34 "character value in \\x{...} sequence is too large"
+ #define ERR35 "invalid condition (?(0)"
+ 
+ typedef unsigned char uschar;
+ 
+ typedef struct pcre_st {
+        unsigned long int magic_number;
+        size_t size;
+        const unsigned char *tables;
+        unsigned long int options;
+        unsigned short int top_bracket;
+        unsigned short int top_backref;
+        uschar first_char;
+        uschar req_char;
+        uschar code[1];
+ } pcre_st;
+ 
+ typedef struct pcre_extra_st {
+        uschar options;
+        uschar start_bits[32];
+ } pcre_extra_st;
+ 
+ typedef struct compile_data {
+        const uschar *lcc;
+        const uschar *fcc;
+        const uschar *cbits;
+        const uschar *ctypes;
+ } compile_data;
+ 
+ typedef struct match_data {
+        int errorcode;
+        int *offset_vector;
+        int offset_end;
+        int offset_max;
+        const uschar *lcc;
+        const uschar *ctypes;
+        BOOL offset_overflow;
+        BOOL notbol;
+        BOOL noteol;
+        BOOL utf8;
+        BOOL endonly;
+        BOOL notempty;
+        const uschar *start_pattern;
+        const uschar *start_subject;
+        const uschar *end_subject;
+        const uschar *start_match;
+        const uschar *end_match_ptr;
+        int end_offset_top;
+ } match_data;
+ 
+ #define ctype_space   0x01
+ #define ctype_letter  0x02
+ #define ctype_digit   0x04
+ #define ctype_xdigit  0x08
+ #define ctype_word    0x10
+ #define ctype_meta    0x80
+ 
+ #define cbit_space     0
+ #define cbit_xdigit   32
+ #define cbit_digit    64
+ #define cbit_upper    96
+ #define cbit_lower   128
+ #define cbit_word    160
+ #define cbit_graph   192
+ #define cbit_print   224
+ #define cbit_punct   256
+ #define cbit_cntrl   288
+ #define cbit_length  320
+ 
+ #define lcc_offset      0
+ #define fcc_offset    256
+ #define cbits_offset  512
+ #define ctypes_offset (cbits_offset + cbit_length)
+ #define tables_length (ctypes_offset + 256)
+ 
+ #ifndef RC_PCRE_TAB
+ 
+ #ifdef __cplusplus
+ #define class pcre_class
+ #endif
+ 
+ #define BRASTACK_SIZE 200
+ 
+ #ifdef RC_PCRE_SUPPORT_UTF8
+ #define MAXLIT 250
+ #else
+ #define MAXLIT 255
+ #endif
+ 
+ static const char rep_min[] = { 0, 0, 1, 1, 0, 0 };
+ static const char rep_max[] = { 0, 0, 0, 0, 1, 1 };
+ 
+ static const short int escapes[] = {
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, ':', ';', '<', '=', '>', '?',
+        '@', -ESC_A, -ESC_B, 0, -ESC_D, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, -ESC_S, 0, 0, 0, -ESC_W,
+        0, 0, -ESC_Z, '[', '\\', ']', '^', '_',
+        '`', 7, -ESC_b, 0, -ESC_d, ESC_E, ESC_F, 0,
+        0, 0, 0, 0, 0, 0, ESC_N, 0,
+        0, 0, ESC_R, -ESC_s, ESC_T, 0, 0, -ESC_w,
+        0, 0, -ESC_z
+ };
+ 
+ static const char *posix_names[] = {
+        "alpha", "lower", "upper",
+        "alnum", "ascii", "cntrl", "digit", "graph",
+        "print", "punct", "space", "word", "xdigit"
+ };
+ 
+ static const uschar posix_name_lengths[] = {
+        5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 6, 0
+ };
+ 
+ static const int posix_class_maps[] = {
+        cbit_lower, cbit_upper, -1,
+        cbit_lower, -1, -1,
+        cbit_upper, -1, -1,
+        cbit_digit, cbit_lower, cbit_upper,
+        cbit_print, cbit_cntrl, -1,
+        cbit_cntrl, -1, -1,
+        cbit_digit, -1, -1,
+        cbit_graph, -1, -1,
+        cbit_print, -1, -1,
+        cbit_punct, -1, -1,
+        cbit_space, -1, -1,
+        cbit_word, -1, -1,
+        cbit_xdigit, -1, -1
+ };
+ 
+ static BOOL
+ compile_regex(int, int, int *, uschar **, const uschar **, const char **,
+                          BOOL, int, int *, int *, compile_data *);
+ 
+ typedef struct eptrblock {
+        struct eptrblock *prev;
+        const uschar *saved_eptr;
+ } eptrblock;
+ 
+ #define match_condassert   0x01
+ #define match_isgroup      0x02
+ 
+ void *(*pcre_malloc) (size_t) = malloc;
+ void (*pcre_free) (void *) = free;
+ 
+ #ifndef RC_PCRE_SUPPORT_UTF8
+ #define GETCHARINC(c, eptr) c = *eptr++;
+ #define GETCHARLEN(c, eptr, len) c = *eptr;
+ #define BACKCHAR(eptr)
+ 
+ #else
+ 
+ #define GETCHARINC(c, eptr) \
+   c = *eptr++; \
+   if (md->utf8 && (c & 0xc0) == 0xc0) \
+     { \
+     int a = utf8_table4[c & 0x3f];   \
+     int s = 6*a; \
+     c = (c & utf8_table3[a]) << s; \
+     while (a-- > 0) \
+       { \
+       s -= 6; \
+       c |= (*eptr++ & 0x3f) << s; \
+       } \
+     }
+ 
+ #define GETCHARLEN(c, eptr, len) \
+   c = *eptr; \
+   len = 1; \
+   if (md->utf8 && (c & 0xc0) == 0xc0) \
+     { \
+     int i; \
+     int a = utf8_table4[c & 0x3f];   \
+     int s = 6*a; \
+     c = (c & utf8_table3[a]) << s; \
+     for (i = 1; i <= a; i++) \
+       { \
+       s -= 6; \
+       c |= (eptr[i] & 0x3f) << s; \
+       } \
+     len += a; \
+     }
+ 
+ #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--;
+ 
+ #endif
+ 
+ #include "rc_pcre.tab"
+ 
+ #ifdef RC_PCRE_SUPPORT_UTF8
+ 
+ static int utf8_table1[] =
+        { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff };
+ 
+ static int utf8_table2[] = { 0, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc };
+ static int utf8_table3[] = { 0xff, 0x1f, 0x0f, 0x07, 0x03, 0x01 };
+ 
+ static uschar utf8_table4[] = {
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+        3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5
+ };
+ 
+ static int ord2utf8(int cvalue, uschar * buffer)
+ {
+        register int i, j;
+        for (i = 0; i < sizeof (utf8_table1) / sizeof (int); i++)
+                if (cvalue <= utf8_table1[i])
+                        break;
+        buffer += i;
+        for (j = i; j > 0; j--) {
+                *buffer-- = 0x80 | (cvalue & 0x3f);
+                cvalue >>= 6;
+        }
+        *buffer = utf8_table2[i] | cvalue;
+        return i + 1;
+ }
+ #endif
+ 
+ #define STRING(a)  # a
+ #define XSTRING(s) STRING(s)
+ 
+ const char *pcre_version(void)
+ {
+        return XSTRING(PCRE_MAJOR) "." XSTRING(PCRE_MINOR) " " XSTRING(PCRE_DATE);
+ }
+ 
+ int pcre_info(const pcre * external_re, int *optptr, int *first_char)
+ {
+        const pcre_st *re = (const pcre_st *)external_re;
+        if (re == NULL)
+                return PCRE_ERROR_NULL;
+        if (re->magic_number != MAGIC_NUMBER)
+                return PCRE_ERROR_BADMAGIC;
+        if (optptr != NULL)
+                *optptr = (int)(re->options & PUBLIC_OPTIONS);
+        if (first_char != NULL)
+                *first_char = ((re->options & PCRE_FIRSTSET) != 0) ? re->first_char :
+                        ((re->options & PCRE_STARTLINE) != 0) ? -1 : -2;
+        return re->top_bracket;
+ }
+ 
+ int
+ pcre_fullinfo(const pcre * external_re, const pcre_extra * study_data,
+                          int what, void *where)
+ {
+        const pcre_st *re = (const pcre_st *)external_re;
+        const pcre_extra_st *study = (const pcre_extra_st *)study_data;
+ 
+        if (re == NULL || where == NULL)
+                return PCRE_ERROR_NULL;
+        if (re->magic_number != MAGIC_NUMBER)
+                return PCRE_ERROR_BADMAGIC;
+ 
+        switch (what) {
+                case PCRE_INFO_OPTIONS:
+                        *((unsigned long int *)where) = re->options & PUBLIC_OPTIONS;
+                        break;
+ 
+                case PCRE_INFO_SIZE:
+                        *((size_t *) where) = re->size;
+                        break;
+ 
+                case PCRE_INFO_CAPTURECOUNT:
+                        *((int *)where) = re->top_bracket;
+                        break;
+ 
+                case PCRE_INFO_BACKREFMAX:
+                        *((int *)where) = re->top_backref;
+                        break;
+ 
+                case PCRE_INFO_FIRSTCHAR:
+                        *((int *)where) =
+                                ((re->options & PCRE_FIRSTSET) != 0) ? re->first_char :
+                                ((re->options & PCRE_STARTLINE) != 0) ? -1 : -2;
+                        break;
+ 
+                case PCRE_INFO_FIRSTTABLE:
+                        *((const uschar **)where) =
+                                (study != NULL && (study->options & PCRE_STUDY_MAPPED) != 0) ?
+                                study->start_bits : NULL;
+                        break;
+ 
+                case PCRE_INFO_LASTLITERAL:
+                        *((int *)where) =
+                                ((re->options & PCRE_REQCHSET) != 0) ? re->req_char : -1;
+                        break;
+ 
+                default:
+                        return PCRE_ERROR_BADOPTION;
+        }
+ 
+        return 0;
+ }
+ 
+ static int
+ check_escape(const uschar ** ptrptr, const char **errorptr, int bracount,
+                         int options, BOOL isclass, compile_data * cd)
+ {
+        const uschar *ptr = *ptrptr;
+        int c, i;
+ 
+        c = *(++ptr);
+        if (c == 0)
+                *errorptr = ERR1;
+ 
+        else if (c < '0' || c > 'z') {
+        }
+ 
+        else if ((i = escapes[c - '0']) != 0)
+                c = i;
+ 
+        else {
+                const uschar *oldptr;
+                switch (c) {
+                        case '1':
+                        case '2':
+                        case '3':
+                        case '4':
+                        case '5':
+                        case '6':
+                        case '7':
+                        case '8':
+                        case '9':
+ 
+                                if (!isclass) {
+                                        oldptr = ptr;
+                                        c -= '0';
+                                        while ((cd->ctypes[ptr[1]] & ctype_digit) != 0)
+                                                c = c * 10 + *(++ptr) - '0';
+                                        if (c < 10 || c <= bracount) {
+                                                c = -(ESC_REF + c);
+                                                break;
+                                        }
+                                        ptr = oldptr;
+                                }
+ 
+                                if ((c = *ptr) >= '8') {
+                                        ptr--;
+                                        c = 0;
+                                        break;
+                                }
+ 
+                        case '0':
+                                c -= '0';
+                                while (i++ < 2 && (cd->ctypes[ptr[1]] & ctype_digit) != 0 &&
+                                           ptr[1] != '8' && ptr[1] != '9')
+                                        c = c * 8 + *(++ptr) - '0';
+                                c &= 255;
+                                break;
+ 
+                        case 'x':
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                if (ptr[1] == '{' && (options & PCRE_UTF8) != 0) {
+                                        const uschar *pt = ptr + 2;
+                                        register int count = 0;
+                                        c = 0;
+                                        while ((cd->ctypes[*pt] & ctype_xdigit) != 0) {
+                                                count++;
+                                                c = c * 16 + cd->lcc[*pt] -
+                                                        (((cd->ctypes[*pt] & ctype_digit) !=
+                                                          0) ? '0' : 'W');
+                                                pt++;
+                                        }
+                                        if (*pt == '}') {
+                                                if (c < 0 || count > 8)
+                                                        *errorptr = ERR34;
+                                                ptr = pt;
+                                                break;
+                                        }
+                                }
+ #endif
+ 
+                                c = 0;
+                                while (i++ < 2 && (cd->ctypes[ptr[1]] & ctype_xdigit) != 0) {
+                                        ptr++;
+                                        c = c * 16 + cd->lcc[*ptr] -
+                                                (((cd->ctypes[*ptr] & ctype_digit) != 0) ? '0' : 'W');
+                                }
+                                break;
+ 
+                        case 'c':
+                                c = *(++ptr);
+                                if (c == 0) {
+                                        *errorptr = ERR2;
+                                        return 0;
+                                }
+ 
+                                if (c >= 'a' && c <= 'z')
+                                        c = cd->fcc[c];
+                                c ^= 0x40;
+                                break;
+ 
+                        default:
+                                if ((options & PCRE_EXTRA) != 0)
+                                        switch (c) {
+                                                default:
+                                                        *errorptr = ERR3;
+                                                        break;
+                                        }
+                                break;
+                }
+        }
+ 
+        *ptrptr = ptr;
+        return c;
+ }
+ 
+ static BOOL is_counted_repeat(const uschar * p, compile_data * cd)
+ {
+        if ((cd->ctypes[*p++] & ctype_digit) == 0)
+                return FALSE;
+        while ((cd->ctypes[*p] & ctype_digit) != 0)
+                p++;
+        if (*p == '}')
+                return TRUE;
+ 
+        if (*p++ != ',')
+                return FALSE;
+        if (*p == '}')
+                return TRUE;
+ 
+        if ((cd->ctypes[*p++] & ctype_digit) == 0)
+                return FALSE;
+        while ((cd->ctypes[*p] & ctype_digit) != 0)
+                p++;
+        return (*p == '}');
+ }
+ 
+ static const uschar *read_repeat_counts(const uschar * p, int *minp,
+                                                                                int *maxp, const char **errorptr,
+                                                                                compile_data * cd)
+ {
+        int min = 0;
+        int max = -1;
+ 
+        while ((cd->ctypes[*p] & ctype_digit) != 0)
+                min = min * 10 + *p++ - '0';
+ 
+        if (*p == '}')
+                max = min;
+        else {
+                if (*(++p) != '}') {
+                        max = 0;
+                        while ((cd->ctypes[*p] & ctype_digit) != 0)
+                                max = max * 10 + *p++ - '0';
+                        if (max < min) {
+                                *errorptr = ERR4;
+                                return p;
+                        }
+                }
+        }
+ 
+        if (min > 65535 || max > 65535)
+                *errorptr = ERR5;
+        else {
+                *minp = min;
+                *maxp = max;
+        }
+        return p;
+ }
+ 
+ static int find_fixedlength(uschar * code, int options)
+ {
+        int length = -1;
+ 
+        register int branchlength = 0;
+        register uschar *cc = code + 3;
+ 
+        for (;;) {
+                int d;
+                register int op = *cc;
+                if (op >= OP_BRA)
+                        op = OP_BRA;
+ 
+                switch (op) {
+                        case OP_BRA:
+                        case OP_ONCE:
+                        case OP_COND:
+                                d = find_fixedlength(cc, options);
+                                if (d < 0)
+                                        return -1;
+                                branchlength += d;
+                                do
+                                        cc += (cc[1] << 8) + cc[2];
+                                while (*cc == OP_ALT);
+                                cc += 3;
+                                break;
+ 
+                        case OP_ALT:
+                        case OP_KET:
+                        case OP_KETRMAX:
+                        case OP_KETRMIN:
+                        case OP_END:
+                                if (length < 0)
+                                        length = branchlength;
+                                else if (length != branchlength)
+                                        return -1;
+                                if (*cc != OP_ALT)
+                                        return length;
+                                cc += 3;
+                                branchlength = 0;
+                                break;
+ 
+                        case OP_ASSERT:
+                        case OP_ASSERT_NOT:
+                        case OP_ASSERTBACK:
+                        case OP_ASSERTBACK_NOT:
+                                do
+                                        cc += (cc[1] << 8) + cc[2];
+                                while (*cc == OP_ALT);
+                                cc += 3;
+                                break;
+ 
+                        case OP_REVERSE:
+                        case OP_BRANUMBER:
+                        case OP_CREF:
+                                cc++;
+                        case OP_OPT:
+                                cc++;
+                        case OP_SOD:
+                        case OP_EOD:
+                        case OP_EODN:
+                        case OP_CIRC:
+                        case OP_DOLL:
+                        case OP_NOT_WORD_BOUNDARY:
+                        case OP_WORD_BOUNDARY:
+                                cc++;
+                                break;
+ 
+                        case OP_CHARS:
+                                branchlength += *(++cc);
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                for (d = 1; d <= *cc; d++)
+                                        if ((cc[d] & 0xc0) == 0x80)
+                                                branchlength--;
+ #endif
+                                cc += *cc + 1;
+                                break;
+ 
+                        case OP_EXACT:
+                        case OP_TYPEEXACT:
+                                branchlength += (cc[1] << 8) + cc[2];
+                                cc += 4;
+                                break;
+ 
+                        case OP_NOT_DIGIT:
+                        case OP_DIGIT:
+                        case OP_NOT_WHITESPACE:
+                        case OP_WHITESPACE:
+                        case OP_NOT_WORDCHAR:
+                        case OP_WORDCHAR:
+                        case OP_ANY:
+                                branchlength++;
+                                cc++;
+                                break;
+ 
+                        case OP_CLASS:
+                                cc += 33;
+ 
+                                switch (*cc) {
+                                        case OP_CRSTAR:
+                                        case OP_CRMINSTAR:
+                                        case OP_CRQUERY:
+                                        case OP_CRMINQUERY:
+                                                return -1;
+ 
+                                        case OP_CRRANGE:
+                                        case OP_CRMINRANGE:
+                                                if ((cc[1] << 8) + cc[2] != (cc[3] << 8) + cc[4])
+                                                        return -1;
+                                                branchlength += (cc[1] << 8) + cc[2];
+                                                cc += 5;
+                                                break;
+ 
+                                        default:
+                                                branchlength++;
+                                }
+                                break;
+ 
+                        default:
+                                return -1;
+                }
+        }
+ }
+ 
+ static BOOL
+ check_posix_syntax(const uschar * ptr, const uschar ** endptr,
+                                   compile_data * cd)
+ {
+        int terminator;
+        terminator = *(++ptr);
+        if (*(++ptr) == '^')
+                ptr++;
+        while ((cd->ctypes[*ptr] & ctype_letter) != 0)
+                ptr++;
+        if (*ptr == terminator && ptr[1] == ']') {
+                *endptr = ptr;
+                return TRUE;
+        }
+        return FALSE;
+ }
+ 
+ static int check_posix_name(const uschar * ptr, int len)
+ {
+        register int yield = 0;
+        while (posix_name_lengths[yield] != 0) {
+                if (len == posix_name_lengths[yield] &&
+                        strncmp((const char *)ptr, posix_names[yield], len) == 0)
+                        return yield;
+                yield++;
+        }
+        return -1;
+ }
+ 
+ static BOOL
+ compile_branch(int options, int *brackets, uschar ** codeptr,
+                           const uschar ** ptrptr, const char **errorptr, int *optchanged,
+                           int *reqchar, int *countlits, compile_data * cd)
+ {
+        int repeat_type, op_type;
+        int repeat_min, repeat_max;
+        int bravalue, length;
+        int greedy_default, greedy_non_default;
+        int prevreqchar;
+        int condcount = 0;
+        int subcountlits = 0;
+        register int c;
+        register uschar *code = *codeptr;
+        uschar *tempcode;
+        const uschar *ptr = *ptrptr;
+        const uschar *tempptr;
+        uschar *previous = NULL;
+        uschar class[32];
+ 
+        greedy_default = ((options & PCRE_UNGREEDY) != 0);
+        greedy_non_default = greedy_default ^ 1;
+ 
+        *reqchar = prevreqchar = -1;
+        *countlits = 0;
+ 
+        for (;; ptr++) {
+                BOOL negate_class;
+                int class_charcount;
+                int class_lastchar;
+                int newoptions;
+                int skipbytes;
+                int subreqchar;
+ 
+                c = *ptr;
+                if ((options & PCRE_EXTENDED) != 0) {
+                        if ((cd->ctypes[c] & ctype_space) != 0)
+                                continue;
+                        if (c == '#') {
+                                while ((c = *(++ptr)) != 0 && c != '\n') ;
+                                continue;
+                        }
+                }
+ 
+                switch (c) {
+                        case 0:
+                        case '|':
+                        case ')':
+                                *codeptr = code;
+                                *ptrptr = ptr;
+                                return TRUE;
+ 
+                        case '^':
+                                previous = NULL;
+                                *code++ = OP_CIRC;
+                                break;
+ 
+                        case '$':
+                                previous = NULL;
+                                *code++ = OP_DOLL;
+                                break;
+ 
+                        case '.':
+                                previous = code;
+                                *code++ = OP_ANY;
+                                break;
+ 
+                        case '[':
+                                previous = code;
+                                *code++ = OP_CLASS;
+ 
+                                if ((c = *(++ptr)) == '^') {
+                                        negate_class = TRUE;
+                                        c = *(++ptr);
+                                }
+                                else
+                                        negate_class = FALSE;
+ 
+                                class_charcount = 0;
+                                class_lastchar = -1;
+ 
+                                memset(class, 0, 32 * sizeof (uschar));
+ 
+                                do {
+                                        if (c == 0) {
+                                                *errorptr = ERR6;
+                                                goto FAILED;
+                                        }
+ 
+                                        if (c == '[' &&
+                                                (ptr[1] == ':' || ptr[1] == '.' || ptr[1] == '=') &&
+                                                check_posix_syntax(ptr, &tempptr, cd)) {
+                                                BOOL local_negate = FALSE;
+                                                int posix_class, i;
+                                                register const uschar *cbits = cd->cbits;
+ 
+                                                if (ptr[1] != ':') {
+                                                        *errorptr = ERR31;
+                                                        goto FAILED;
+                                                }
+ 
+                                                ptr += 2;
+                                                if (*ptr == '^') {
+                                                        local_negate = TRUE;
+                                                        ptr++;
+                                                }
+ 
+                                                posix_class = check_posix_name(ptr, tempptr - ptr);
+                                                if (posix_class < 0) {
+                                                        *errorptr = ERR30;
+                                                        goto FAILED;
+                                                }
+ 
+                                                if ((options & PCRE_CASELESS) != 0
+                                                        && posix_class <= 2)
+                                                        posix_class = 0;
+ 
+                                                posix_class *= 3;
+                                                for (i = 0; i < 3; i++) {
+                                                        int taboffset = posix_class_maps[posix_class + i];
+                                                        if (taboffset < 0)
+                                                                break;
+                                                        if (local_negate)
+                                                                for (c = 0; c < 32; c++)
+                                                                        class[c] |= ~cbits[c + taboffset];
+                                                        else
+                                                                for (c = 0; c < 32; c++)
+                                                                        class[c] |= cbits[c + taboffset];
+                                                }
+ 
+                                                ptr = tempptr + 1;
+                                                class_charcount = 10;
+                                                continue;
+                                        }
+ 
+                                        if (c == '\\') {
+                                                c = check_escape(&ptr, errorptr, *brackets, options,
+                                                                                 TRUE, cd);
+                                                if (-c == ESC_b)
+                                                        c = '\b';
+                                                else if (c < 0) {
+                                                        register const uschar *cbits = cd->cbits;
+                                                        class_charcount = 10;
+                                                        switch (-c) {
+                                                                case ESC_d:
+                                                                        for (c = 0; c < 32; c++)
+                                                                                class[c] |= cbits[c + cbit_digit];
+                                                                        continue;
+ 
+                                                                case ESC_D:
+                                                                        for (c = 0; c < 32; c++)
+                                                                                class[c] |= ~cbits[c + cbit_digit];
+                                                                        continue;
+ 
+                                                                case ESC_w:
+                                                                        for (c = 0; c < 32; c++)
+                                                                                class[c] |= cbits[c + cbit_word];
+                                                                        continue;
+ 
+                                                                case ESC_W:
+                                                                        for (c = 0; c < 32; c++)
+                                                                                class[c] |= ~cbits[c + cbit_word];
+                                                                        continue;
+ 
+                                                                case ESC_s:
+                                                                        for (c = 0; c < 32; c++)
+                                                                                class[c] |= cbits[c + cbit_space];
+                                                                        continue;
+ 
+                                                                case ESC_S:
+                                                                        for (c = 0; c < 32; c++)
+                                                                                class[c] |= ~cbits[c + cbit_space];
+                                                                        continue;
+ 
+                                                                default:
+                                                                        *errorptr = ERR7;
+                                                                        goto FAILED;
+                                                        }
+                                                }
+ 
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                if (c > 255) {
+                                                        *errorptr = ERR33;
+                                                        goto FAILED;
+                                                }
+ #endif
+                                        }
+ 
+                                        if (ptr[1] == '-' && ptr[2] != ']') {
+                                                int d;
+                                                ptr += 2;
+                                                d = *ptr;
+ 
+                                                if (d == 0) {
+                                                        *errorptr = ERR6;
+                                                        goto FAILED;
+                                                }
+ 
+                                                if (d == '\\') {
+                                                        const uschar *oldptr = ptr;
+                                                        d = check_escape(&ptr, errorptr, *brackets,
+                                                                                         options, TRUE, cd);
+ 
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                        if (d > 255) {
+                                                                *errorptr = ERR33;
+                                                                goto FAILED;
+                                                        }
+ #endif
+                                                        if (d < 0) {
+                                                                if (d == -ESC_b)
+                                                                        d = '\b';
+                                                                else {
+                                                                        ptr = oldptr - 2;
+                                                                        goto SINGLE_CHARACTER;
+                                                                }
+                                                        }
+                                                }
+ 
+                                                if (d < c) {
+                                                        *errorptr = ERR8;
+                                                        goto FAILED;
+                                                }
+ 
+                                                for (; c <= d; c++) {
+                                                        class[c / 8] |= (1 << (c & 7));
+                                                        if ((options & PCRE_CASELESS) != 0) {
+                                                                int uc = cd->fcc[c];
+                                                                class[uc / 8] |= (1 << (uc & 7));
+                                                        }
+                                                        class_charcount++;
+                                                        class_lastchar = c;
+                                                }
+                                                continue;
+                                        }
+ 
+                                  SINGLE_CHARACTER:
+ 
+                                        class[c / 8] |= (1 << (c & 7));
+                                        if ((options & PCRE_CASELESS) != 0) {
+                                                c = cd->fcc[c];
+                                                class[c / 8] |= (1 << (c & 7));
+                                        }
+                                        class_charcount++;
+                                        class_lastchar = c;
+                                }
+ 
+                                while ((c = *(++ptr)) != ']');
+ 
+                                if (class_charcount == 1 && class_lastchar >= 0) {
+                                        if (negate_class) {
+                                                code[-1] = OP_NOT;
+                                        }
+                                        else {
+                                                code[-1] = OP_CHARS;
+                                                *code++ = 1;
+                                        }
+                                        *code++ = class_lastchar;
+                                }
+ 
+                                else {
+                                        if (negate_class)
+                                                for (c = 0; c < 32; c++)
+                                                        code[c] = ~class[c];
+                                        else
+                                                memcpy(code, class, 32);
+                                        code += 32;
+                                }
+                                break;
+ 
+                        case '{':
+                                if (!is_counted_repeat(ptr + 1, cd))
+                                        goto NORMAL_CHAR;
+                                ptr =
+                                        read_repeat_counts(ptr + 1, &repeat_min, &repeat_max,
+                                                                           errorptr, cd);
+                                if (*errorptr != NULL)
+                                        goto FAILED;
+                                goto REPEAT;
+ 
+                        case '*':
+                                repeat_min = 0;
+                                repeat_max = -1;
+                                goto REPEAT;
+ 
+                        case '+':
+                                repeat_min = 1;
+                                repeat_max = -1;
+                                goto REPEAT;
+ 
+                        case '?':
+                                repeat_min = 0;
+                                repeat_max = 1;
+ 
+                          REPEAT:
+                                if (previous == NULL) {
+                                        *errorptr = ERR9;
+                                        goto FAILED;
+                                }
+ 
+                                if (ptr[1] == '?') {
+                                        repeat_type = greedy_non_default;
+                                        ptr++;
+                                }
+                                else
+                                        repeat_type = greedy_default;
+ 
+                                if (*previous == OP_CHARS) {
+                                        int len = previous[1];
+ 
+                                        if (repeat_min == 0)
+                                                *reqchar = prevreqchar;
+                                        *countlits += repeat_min - 1;
+ 
+                                        if (len == 1) {
+                                                c = previous[2];
+                                                code = previous;
+                                        }
+                                        else {
+                                                c = previous[len + 1];
+                                                previous[1]--;
+                                                code--;
+                                        }
+                                        op_type = 0;
+                                        goto OUTPUT_SINGLE_REPEAT;
+                                }
+ 
+                                else if ((int)*previous == OP_NOT) {
+                                        op_type = OP_NOTSTAR - OP_STAR;
+                                        c = previous[1];
+                                        code = previous;
+                                        goto OUTPUT_SINGLE_REPEAT;
+                                }
+ 
+                                else if ((int)*previous < OP_EODN || *previous == OP_ANY) {
+                                        op_type = OP_TYPESTAR - OP_STAR;
+                                        c = *previous;
+                                        code = previous;
+ 
+                                  OUTPUT_SINGLE_REPEAT:
+ 
+                                        if (repeat_max == 0)
+                                                goto END_REPEAT;
+ 
+                                        repeat_type += op_type;
+ 
+                                        if (repeat_min == 0) {
+                                                if (repeat_max == -1)
+                                                        *code++ = OP_STAR + repeat_type;
+                                                else if (repeat_max == 1)
+                                                        *code++ = OP_QUERY + repeat_type;
+                                                else {
+                                                        *code++ = OP_UPTO + repeat_type;
+                                                        *code++ = repeat_max >> 8;
+                                                        *code++ = (repeat_max & 255);
+                                                }
+                                        }
+ 
+                                        else if (repeat_min == 1 && repeat_max == -1)
+                                                *code++ = OP_PLUS + repeat_type;
+ 
+                                        else {
+                                                if (repeat_min != 1) {
+                                                        *code++ = OP_EXACT + op_type;
+                                                        *code++ = repeat_min >> 8;
+                                                        *code++ = (repeat_min & 255);
+                                                }
+ 
+                                                else if (*previous == OP_CHARS) {
+                                                        if (code == previous)
+                                                                code += 2;
+                                                        else
+                                                                previous[1]++;
+                                                }
+ 
+                                                else if (*previous == OP_NOT)
+                                                        code++;
+ 
+                                                if (repeat_max < 0) {
+                                                        *code++ = c;
+                                                        *code++ = OP_STAR + repeat_type;
+                                                }
+ 
+                                                else if (repeat_max != repeat_min) {
+                                                        *code++ = c;
+                                                        repeat_max -= repeat_min;
+                                                        *code++ = OP_UPTO + repeat_type;
+                                                        *code++ = repeat_max >> 8;
+                                                        *code++ = (repeat_max & 255);
+                                                }
+                                        }
+ 
+                                        *code++ = c;
+                                }
+ 
+                                else if (*previous == OP_CLASS || *previous == OP_REF) {
+                                        if (repeat_max == 0) {
+                                                code = previous;
+                                                goto END_REPEAT;
+                                        }
+                                        if (repeat_min == 0 && repeat_max == -1)
+                                                *code++ = OP_CRSTAR + repeat_type;
+                                        else if (repeat_min == 1 && repeat_max == -1)
+                                                *code++ = OP_CRPLUS + repeat_type;
+                                        else if (repeat_min == 0 && repeat_max == 1)
+                                                *code++ = OP_CRQUERY + repeat_type;
+                                        else {
+                                                *code++ = OP_CRRANGE + repeat_type;
+                                                *code++ = repeat_min >> 8;
+                                                *code++ = repeat_min & 255;
+                                                if (repeat_max == -1)
+                                                        repeat_max = 0;
+                                                *code++ = repeat_max >> 8;
+                                                *code++ = repeat_max & 255;
+                                        }
+                                }
+ 
+                                else if ((int)*previous >= OP_BRA || (int)*previous == OP_ONCE
+                                                 || (int)*previous == OP_COND) {
+                                        register int i;
+                                        int ketoffset = 0;
+                                        int len = code - previous;
+                                        uschar *bralink = NULL;
+ 
+                                        if (repeat_max == -1) {
+                                                register uschar *ket = previous;
+                                                do
+                                                        ket += (ket[1] << 8) + ket[2];
+                                                while (*ket != OP_KET);
+                                                ketoffset = code - ket;
+                                        }
+ 
+                                        if (repeat_min == 0) {
+                                                if (subcountlits > 0) {
+                                                        *reqchar = prevreqchar;
+                                                        *countlits -= subcountlits;
+                                                }
+ 
+                                                if (repeat_max == 0) {
+                                                        code = previous;
+                                                        goto END_REPEAT;
+                                                }
+ 
+                                                if (repeat_max <= 1) {
+                                                        memmove(previous + 1, previous, len);
+                                                        code++;
+                                                        *previous++ = OP_BRAZERO + repeat_type;
+                                                }
+ 
+                                                else {
+                                                        int offset;
+                                                        memmove(previous + 4, previous, len);
+                                                        code += 4;
+                                                        *previous++ = OP_BRAZERO + repeat_type;
+                                                        *previous++ = OP_BRA;
+ 
+                                                        offset =
+                                                                (bralink == NULL) ? 0 : previous - bralink;
+                                                        bralink = previous;
+                                                        *previous++ = offset >> 8;
+                                                        *previous++ = offset & 255;
+                                                }
+ 
+                                                repeat_max--;
+                                        }
+ 
+                                        else {
+                                                for (i = 1; i < repeat_min; i++) {
+                                                        memcpy(code, previous, len);
+                                                        code += len;
+                                                }
+                                                if (repeat_max > 0)
+                                                        repeat_max -= repeat_min;
+                                        }
+ 
+                                        if (repeat_max >= 0) {
+                                                for (i = repeat_max - 1; i >= 0; i--) {
+                                                        *code++ = OP_BRAZERO + repeat_type;
+ 
+                                                        if (i != 0) {
+                                                                int offset;
+                                                                *code++ = OP_BRA;
+                                                                offset =
+                                                                        (bralink == NULL) ? 0 : code - bralink;
+                                                                bralink = code;
+                                                                *code++ = offset >> 8;
+                                                                *code++ = offset & 255;
+                                                        }
+ 
+                                                        memcpy(code, previous, len);
+                                                        code += len;
+                                                }
+ 
+                                                while (bralink != NULL) {
+                                                        int oldlinkoffset;
+                                                        int offset = code - bralink + 1;
+                                                        uschar *bra = code - offset;
+                                                        oldlinkoffset = (bra[1] << 8) + bra[2];
+                                                        bralink =
+                                                                (oldlinkoffset ==
+                                                                 0) ? NULL : bralink - oldlinkoffset;
+                                                        *code++ = OP_KET;
+                                                        *code++ = bra[1] = offset >> 8;
+                                                        *code++ = bra[2] = (offset & 255);
+                                                }
+                                        }
+ 
+                                        else
+                                                code[-ketoffset] = OP_KETRMAX + repeat_type;
+                                }
+ 
+                                else {
+                                        *errorptr = ERR11;
+                                        goto FAILED;
+                                }
+ 
+                          END_REPEAT:
+                                previous = NULL;
+                                break;
+ 
+                        case '(':
+                                newoptions = options;
+                                skipbytes = 0;
+ 
+                                if (*(++ptr) == '?') {
+                                        int set, unset;
+                                        int *optset;
+ 
+                                        switch (*(++ptr)) {
+                                                case '#':
+                                                        ptr++;
+                                                        while (*ptr != ')')
+                                                                ptr++;
+                                                        continue;
+ 
+                                                case ':':
+                                                        bravalue = OP_BRA;
+                                                        ptr++;
+                                                        break;
+ 
+                                                case '(':
+                                                        bravalue = OP_COND;
+                                                        if ((cd->ctypes[*(++ptr)] & ctype_digit) != 0) {
+                                                                int condref = *ptr - '0';
+                                                                while (*(++ptr) != ')')
+                                                                        condref = condref * 10 + *ptr - '0';
+                                                                if (condref == 0) {
+                                                                        *errorptr = ERR35;
+                                                                        goto FAILED;
+                                                                }
+                                                                ptr++;
+                                                                code[3] = OP_CREF;
+                                                                code[4] = condref >> 8;
+                                                                code[5] = condref & 255;
+                                                                skipbytes = 3;
+                                                        }
+                                                        else
+                                                                ptr--;
+                                                        break;
+ 
+                                                case '=':
+                                                        bravalue = OP_ASSERT;
+                                                        ptr++;
+                                                        break;
+ 
+                                                case '!':
+                                                        bravalue = OP_ASSERT_NOT;
+                                                        ptr++;
+                                                        break;
+ 
+                                                case '<':
+                                                        switch (*(++ptr)) {
+                                                                case '=':
+                                                                        bravalue = OP_ASSERTBACK;
+                                                                        ptr++;
+                                                                        break;
+ 
+                                                                case '!':
+                                                                        bravalue = OP_ASSERTBACK_NOT;
+                                                                        ptr++;
+                                                                        break;
+ 
+                                                                default:
+                                                                        *errorptr = ERR24;
+                                                                        goto FAILED;
+                                                        }
+                                                        break;
+ 
+                                                case '>':
+                                                        bravalue = OP_ONCE;
+                                                        ptr++;
+                                                        break;
+ 
+                                                case 'R':
+                                                        *code++ = OP_RECURSE;
+                                                        ptr++;
+                                                        continue;
+ 
+                                                default:
+                                                        set = unset = 0;
+                                                        optset = &set;
+ 
+                                                        while (*ptr != ')' && *ptr != ':') {
+                                                                switch (*ptr++) {
+                                                                        case '-':
+                                                                                optset = &unset;
+                                                                                break;
+ 
+                                                                        case 'i':
+                                                                                *optset |= PCRE_CASELESS;
+                                                                                break;
+                                                                        case 'm':
+                                                                                *optset |= PCRE_MULTILINE;
+                                                                                break;
+                                                                        case 's':
+                                                                                *optset |= PCRE_DOTALL;
+                                                                                break;
+                                                                        case 'x':
+                                                                                *optset |= PCRE_EXTENDED;
+                                                                                break;
+                                                                        case 'U':
+                                                                                *optset |= PCRE_UNGREEDY;
+                                                                                break;
+                                                                        case 'X':
+                                                                                *optset |= PCRE_EXTRA;
+                                                                                break;
+ 
+                                                                        default:
+                                                                                *errorptr = ERR12;
+                                                                                goto FAILED;
+                                                                }
+                                                        }
+ 
+                                                        newoptions = (options | set) & (~unset);
+ 
+                                                        if (*ptr == ')') {
+                                                                if ((options & PCRE_INGROUP) != 0 &&
+                                                                        (options & PCRE_IMS) !=
+                                                                        (newoptions & PCRE_IMS)) {
+                                                                        *code++ = OP_OPT;
+                                                                        *code++ = *optchanged =
+                                                                                newoptions & PCRE_IMS;
+                                                                }
+                                                                options = newoptions;
+                                                                previous = NULL;
+                                                                continue;
+                                                        }
+ 
+                                                        bravalue = OP_BRA;
+                                                        ptr++;
+                                        }
+                                }
+ 
+                                else {
+                                        if (++(*brackets) > EXTRACT_BASIC_MAX) {
+                                                bravalue = OP_BRA + EXTRACT_BASIC_MAX + 1;
+                                                code[3] = OP_BRANUMBER;
+                                                code[4] = *brackets >> 8;
+                                                code[5] = *brackets & 255;
+                                                skipbytes = 3;
+                                        }
+                                        else
+                                                bravalue = OP_BRA + *brackets;
+                                }
+ 
+                                previous = (bravalue >= OP_ONCE) ? code : NULL;
+                                *code = bravalue;
+                                tempcode = code;
+ 
+                                if (!compile_regex(options | PCRE_INGROUP,
+                                                                   ((options & PCRE_IMS) !=
+                                                                        (newoptions & PCRE_IMS)) ? newoptions &
+                                                                   PCRE_IMS : -1, brackets, &tempcode, &ptr,
+                                                                   errorptr, (bravalue == OP_ASSERTBACK
+                                                                                          || bravalue ==
+                                                                                          OP_ASSERTBACK_NOT), skipbytes,
+                                                                   &subreqchar, &subcountlits, cd))
+                                        goto FAILED;
+ 
+                                else if (bravalue == OP_COND) {
+                                        uschar *tc = code;
+                                        condcount = 0;
+ 
+                                        do {
+                                                condcount++;
+                                                tc += (tc[1] << 8) | tc[2];
+                                        }
+                                        while (*tc != OP_KET);
+ 
+                                        if (condcount > 2) {
+                                                *errorptr = ERR27;
+                                                goto FAILED;
+                                        }
+                                }
+ 
+                                if (subreqchar > 0 &&
+                                        (bravalue >= OP_BRA || bravalue == OP_ONCE
+                                         || bravalue == OP_ASSERT || (bravalue == OP_COND
+                                                                                                  && condcount == 2))) {
+                                        prevreqchar = *reqchar;
+                                        *reqchar = subreqchar;
+                                        if (bravalue != OP_ASSERT)
+                                                *countlits += subcountlits;
+                                }
+ 
+                                code = tempcode;
+ 
+                                if (*ptr != ')') {
+                                        *errorptr = ERR14;
+                                        goto FAILED;
+                                }
+                                break;
+ 
+                        case '\\':
+                                tempptr = ptr;
+                                c = check_escape(&ptr, errorptr, *brackets, options, FALSE,
+                                                                 cd);
+ 
+                                if (c < 0) {
+                                        if (-c >= ESC_REF) {
+                                                int number = -c - ESC_REF;
+                                                previous = code;
+                                                *code++ = OP_REF;
+                                                *code++ = number >> 8;
+                                                *code++ = number & 255;
+                                        }
+                                        else {
+                                                previous = (-c > ESC_b && -c < ESC_Z) ? code : NULL;
+                                                *code++ = -c;
+                                        }
+                                        continue;
+                                }
+ 
+                                ptr = tempptr;
+                                c = '\\';
+ 
+                          NORMAL_CHAR:
+                        default:
+                                previous = code;
+                                *code = OP_CHARS;
+                                code += 2;
+                                length = 0;
+ 
+                                do {
+                                        if ((options & PCRE_EXTENDED) != 0) {
+                                                if ((cd->ctypes[c] & ctype_space) != 0)
+                                                        continue;
+                                                if (c == '#') {
+                                                        while ((c = *(++ptr)) != 0 && c != '\n') ;
+                                                        if (c == 0)
+                                                                break;
+                                                        continue;
+                                                }
+                                        }
+ 
+                                        if (c == '\\') {
+                                                tempptr = ptr;
+                                                c = check_escape(&ptr, errorptr, *brackets, options,
+                                                                                 FALSE, cd);
+                                                if (c < 0) {
+                                                        ptr = tempptr;
+                                                        break;
+                                                }
+ 
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                if (c > 127 && (options & PCRE_UTF8) != 0) {
+                                                        uschar buffer[8];
+                                                        int len = ord2utf8(c, buffer);
+                                                        for (c = 0; c < len; c++)
+                                                                *code++ = buffer[c];
+                                                        length += len;
+                                                        continue;
+                                                }
+ #endif
+                                        }
+ 
+                                        *code++ = c;
+                                        length++;
+                                }
+ 
+                                while (length < MAXLIT
+                                           && (cd->ctypes[c = *(++ptr)] & ctype_meta) == 0);
+ 
+                                prevreqchar = (length > 1) ? code[-2] : *reqchar;
+                                *reqchar = code[-1];
+                                *countlits += length;
+ 
+                                previous[1] = length;
+                                if (length < MAXLIT)
+                                        ptr--;
+                                break;
+                }
+        }
+ 
+   FAILED:
+        *ptrptr = ptr;
+        return FALSE;
+ }
+ 
+ static BOOL
+ compile_regex(int options, int optchanged, int *brackets, uschar ** codeptr,
+                          const uschar ** ptrptr, const char **errorptr, BOOL lookbehind,
+                          int skipbytes, int *reqchar, int *countlits, compile_data * cd)
+ {
+        const uschar *ptr = *ptrptr;
+        uschar *code = *codeptr;
+        uschar *last_branch = code;
+        uschar *start_bracket = code;
+        uschar *reverse_count = NULL;
+        int oldoptions = options & PCRE_IMS;
+        int branchreqchar, branchcountlits;
+ 
+        *reqchar = -1;
+        *countlits = INT_MAX;
+        code += 3 + skipbytes;
+ 
+        for (;;) {
+                int length;
+ 
+                if (optchanged >= 0) {
+                        *code++ = OP_OPT;
+                        *code++ = optchanged;
+                        options = (options & ~PCRE_IMS) | optchanged;
+                }
+ 
+                if (lookbehind) {
+                        *code++ = OP_REVERSE;
+                        reverse_count = code;
+                        *code++ = 0;
+                        *code++ = 0;
+                }
+ 
+                if (!compile_branch
+                        (options, brackets, &code, &ptr, errorptr, &optchanged,
+                         &branchreqchar, &branchcountlits, cd)) {
+                        *ptrptr = ptr;
+                        return FALSE;
+                }
+ 
+                length = code - last_branch;
+                last_branch[1] = length >> 8;
+                last_branch[2] = length & 255;
+ 
+                if (*reqchar != -2) {
+                        if (branchreqchar >= 0) {
+                                if (*reqchar == -1)
+                                        *reqchar = branchreqchar;
+                                else if (*reqchar != branchreqchar)
+                                        *reqchar = -2;
+                        }
+                        else
+                                *reqchar = -2;
+                }
+ 
+                if (branchcountlits < *countlits)
+                        *countlits = branchcountlits;
+ 
+                if (lookbehind) {
+                        *code = OP_END;
+                        length = find_fixedlength(last_branch, options);
+ 
+                        if (length < 0) {
+                                *errorptr = ERR25;
+                                *ptrptr = ptr;
+                                return FALSE;
+                        }
+                        reverse_count[0] = (length >> 8);
+                        reverse_count[1] = length & 255;
+                }
+ 
+                if (*ptr != '|') {
+                        length = code - start_bracket;
+                        *code++ = OP_KET;
+                        *code++ = length >> 8;
+                        *code++ = length & 255;
+                        if (optchanged >= 0) {
+                                *code++ = OP_OPT;
+                                *code++ = oldoptions;
+                        }
+                        *codeptr = code;
+                        *ptrptr = ptr;
+                        return TRUE;
+                }
+ 
+                *code = OP_ALT;
+                last_branch = code;
+                code += 3;
+                ptr++;
+        }
+ }
+ 
+ static const uschar *first_significant_code(const uschar * code, int *options,
+                                                                                        int optbit, BOOL optstop)
+ {
+        for (;;) {
+                switch ((int)*code) {
+                        case OP_OPT:
+                                if (optbit > 0
+                                        && ((int)code[1] & optbit) != (*options & optbit)) {
+                                        if (optstop)
+                                                return code;
+                                        *options = (int)code[1];
+                                }
+                                code += 2;
+                                break;
+ 
+                        case OP_CREF:
+                        case OP_BRANUMBER:
+                                code += 3;
+                                break;
+ 
+                        case OP_WORD_BOUNDARY:
+                        case OP_NOT_WORD_BOUNDARY:
+                                code++;
+                                break;
+ 
+                        case OP_ASSERT_NOT:
+                        case OP_ASSERTBACK:
+                        case OP_ASSERTBACK_NOT:
+                                do
+                                        code += (code[1] << 8) + code[2];
+                                while (*code == OP_ALT);
+                                code += 3;
+                                break;
+ 
+                        default:
+                                return code;
+                }
+        }
+ }
+ 
+ static BOOL is_anchored(register const uschar * code, int *options)
+ {
+        do {
+                const uschar *scode = first_significant_code(code + 3, options,
+                                                                                                         PCRE_MULTILINE, FALSE);
+                register int op = *scode;
+                if (op >= OP_BRA || op == OP_ASSERT || op == OP_ONCE || op == OP_COND) {
+                        if (!is_anchored(scode, options))
+                                return FALSE;
+                }
+                else if ((op == OP_TYPESTAR || op == OP_TYPEMINSTAR) &&
+                                 (*options & PCRE_DOTALL) != 0) {
+                        if (scode[1] != OP_ANY)
+                                return FALSE;
+                }
+                else if (op != OP_SOD &&
+                                 ((*options & PCRE_MULTILINE) != 0 || op != OP_CIRC))
+                        return FALSE;
+                code += (code[1] << 8) + code[2];
+        }
+        while (*code == OP_ALT);
+        return TRUE;
+ }
+ 
+ static BOOL is_startline(const uschar * code)
+ {
+        do {
+                const uschar *scode =
+                        first_significant_code(code + 3, NULL, 0, FALSE);
+                register int op = *scode;
+                if (op >= OP_BRA || op == OP_ASSERT || op == OP_ONCE || op == OP_COND) {
+                        if (!is_startline(scode))
+                                return FALSE;
+                }
+                else if (op == OP_TYPESTAR || op == OP_TYPEMINSTAR) {
+                        if (scode[1] != OP_ANY)
+                                return FALSE;
+                }
+                else if (op != OP_CIRC)
+                        return FALSE;
+                code += (code[1] << 8) + code[2];
+        }
+        while (*code == OP_ALT);
+        return TRUE;
+ }
+ 
+ static int find_firstchar(const uschar * code, int *options)
+ {
+        register int c = -1;
+        do {
+                int d;
+                const uschar *scode = first_significant_code(code + 3, options,
+                                                                                                         PCRE_CASELESS, TRUE);
+                register int op = *scode;
+ 
+                if (op >= OP_BRA)
+                        op = OP_BRA;
+ 
+                switch (op) {
+                        default:
+                                return -1;
+ 
+                        case OP_BRA:
+                        case OP_ASSERT:
+                        case OP_ONCE:
+                        case OP_COND:
+                                if ((d = find_firstchar(scode, options)) < 0)
+                                        return -1;
+                                if (c < 0)
+                                        c = d;
+                                else if (c != d)
+                                        return -1;
+                                break;
+ 
+                        case OP_EXACT:
+                                scode++;
+ 
+                        case OP_CHARS:
+                                scode++;
+ 
+                        case OP_PLUS:
+                        case OP_MINPLUS:
+                                if (c < 0)
+                                        c = scode[1];
+                                else if (c != scode[1])
+                                        return -1;
+                                break;
+                }
+ 
+                code += (code[1] << 8) + code[2];
+        }
+        while (*code == OP_ALT);
+        return c;
+ }
+ 
+ pcre *pcre_compile(const char *pattern, int options, const char **errorptr,
+                                   int *erroroffset, const unsigned char *tables)
+ {
+        pcre_st *re;
+        int length = 3;
+        int runlength;
+        int c, reqchar, countlits;
+        int bracount = 0;
+        int top_backref = 0;
+        int branch_extra = 0;
+        int branch_newextra;
+        unsigned int brastackptr = 0;
+        size_t size;
+        uschar *code;
+        const uschar *ptr;
+        compile_data compile_block;
+        int brastack[BRASTACK_SIZE];
+        uschar bralenstack[BRASTACK_SIZE];
+ 
+ #ifndef RC_PCRE_SUPPORT_UTF8
+        if ((options & PCRE_UTF8) != 0) {
+                *errorptr = ERR32;
+                return NULL;
+        }
+ #endif
+ 
+        if (errorptr == NULL)
+                return NULL;
+        *errorptr = NULL;
+ 
+        if (erroroffset == NULL) {
+                *errorptr = ERR16;
+                return NULL;
+        }
+        *erroroffset = 0;
+ 
+        if ((options & ~PUBLIC_OPTIONS) != 0) {
+                *errorptr = ERR17;
+                return NULL;
+        }
+ 
+        if (tables == NULL)
+                tables = pcre_default_tables;
+        compile_block.lcc = tables + lcc_offset;
+        compile_block.fcc = tables + fcc_offset;
+        compile_block.cbits = tables + cbits_offset;
+        compile_block.ctypes = tables + ctypes_offset;
+ 
+        ptr = (const uschar *)(pattern - 1);
+        while ((c = *(++ptr)) != 0) {
+                int min, max;
+                int class_charcount;
+                int bracket_length;
+ 
+                if ((options & PCRE_EXTENDED) != 0) {
+                        if ((compile_block.ctypes[c] & ctype_space) != 0)
+                                continue;
+                        if (c == '#') {
+                                while ((c = *(++ptr)) != 0 && c != '\n') ;
+                                continue;
+                        }
+                }
+ 
+                switch (c) {
+                        case '\\':
+                                {
+                                        const uschar *save_ptr = ptr;
+                                        c = check_escape(&ptr, errorptr, bracount, options, FALSE,
+                                                                         &compile_block);
+                                        if (*errorptr != NULL)
+                                                goto PCRE_ERROR_RETURN;
+                                        if (c >= 0) {
+                                                ptr = save_ptr;
+                                                c = '\\';
+                                                goto NORMAL_CHAR;
+                                        }
+                                }
+                                length++;
+ 
+                                if (c <= -ESC_REF) {
+                                        int refnum = -c - ESC_REF;
+                                        if (refnum > top_backref)
+                                                top_backref = refnum;
+                                        length += 2;
+                                        if (ptr[1] == '{'
+                                                && is_counted_repeat(ptr + 2, &compile_block)) {
+                                                ptr =
+                                                        read_repeat_counts(ptr + 2, &min, &max, errorptr,
+                                                                                           &compile_block);
+                                                if (*errorptr != NULL)
+                                                        goto PCRE_ERROR_RETURN;
+                                                if ((min == 0 && (max == 1 || max == -1)) ||
+                                                        (min == 1 && max == -1))
+                                                        length++;
+                                                else
+                                                        length += 5;
+                                                if (ptr[1] == '?')
+                                                        ptr++;
+                                        }
+                                }
+                                continue;
+ 
+                        case '^':
+                        case '.':
+                        case '$':
+                        case '*':
+                        case '+':
+                        case '?':
+                                length++;
+                                continue;
+ 
+                        case '{':
+                                if (!is_counted_repeat(ptr + 1, &compile_block))
+                                        goto NORMAL_CHAR;
+                                ptr =
+                                        read_repeat_counts(ptr + 1, &min, &max, errorptr,
+                                                                           &compile_block);
+                                if (*errorptr != NULL)
+                                        goto PCRE_ERROR_RETURN;
+                                if ((min == 0 && (max == 1 || max == -1)) ||
+                                        (min == 1 && max == -1))
+                                        length++;
+                                else {
+                                        length--;
+                                        if (min == 1)
+                                                length++;
+                                        else if (min > 0)
+                                                length += 4;
+                                        if (max > 0)
+                                                length += 4;
+                                        else
+                                                length += 2;
+                                }
+                                if (ptr[1] == '?')
+                                        ptr++;
+                                continue;
+ 
+                        case '|':
+                                length += 3 + branch_extra;
+                                continue;
+ 
+                        case '[':
+                                class_charcount = 0;
+                                if (*(++ptr) == '^')
+                                        ptr++;
+                                do {
+                                        if (*ptr == '\\') {
+                                                int ch =
+                                                        check_escape(&ptr, errorptr, bracount, options,
+                                                                                 TRUE,
+                                                                                 &compile_block);
+                                                if (*errorptr != NULL)
+                                                        goto PCRE_ERROR_RETURN;
+                                                if (-ch == ESC_b)
+                                                        class_charcount++;
+                                                else
+                                                        class_charcount = 10;
+                                        }
+                                        else
+                                                class_charcount++;
+                                        ptr++;
+                                }
+                                while (*ptr != 0 && *ptr != ']');
+ 
+                                if (class_charcount == 1)
+                                        length += 3;
+                                else {
+                                        length += 33;
+ 
+                                        if (*ptr != 0 && ptr[1] == '{'
+                                                && is_counted_repeat(ptr + 2, &compile_block)) {
+                                                ptr =
+                                                        read_repeat_counts(ptr + 2, &min, &max, errorptr,
+                                                                                           &compile_block);
+                                                if (*errorptr != NULL)
+                                                        goto PCRE_ERROR_RETURN;
+                                                if ((min == 0 && (max == 1 || max == -1)) ||
+                                                        (min == 1 && max == -1))
+                                                        length++;
+                                                else
+                                                        length += 5;
+                                                if (ptr[1] == '?')
+                                                        ptr++;
+                                        }
+                                }
+                                continue;
+ 
+                        case '(':
+                                branch_newextra = 0;
+                                bracket_length = 3;
+ 
+                                if (ptr[1] == '?') {
+                                        int set, unset;
+                                        int *optset;
+ 
+                                        switch (c = ptr[2]) {
+                                                case '#':
+                                                        ptr += 3;
+                                                        while (*ptr != 0 && *ptr != ')')
+                                                                ptr++;
+                                                        if (*ptr == 0) {
+                                                                *errorptr = ERR18;
+                                                                goto PCRE_ERROR_RETURN;
+                                                        }
+                                                        continue;
+ 
+                                                case ':':
+                                                case '=':
+                                                case '!':
+                                                case '>':
+                                                        ptr += 2;
+                                                        break;
+ 
+                                                case 'R':
+                                                        if (ptr[3] != ')') {
+                                                                *errorptr = ERR29;
+                                                                goto PCRE_ERROR_RETURN;
+                                                        }
+                                                        ptr += 3;
+                                                        length += 1;
+                                                        break;
+ 
+                                                case '<':
+                                                        if (ptr[3] == '=' || ptr[3] == '!') {
+                                                                ptr += 3;
+                                                                branch_newextra = 3;
+                                                                length += 3;
+                                                                break;
+                                                        }
+                                                        *errorptr = ERR24;
+                                                        goto PCRE_ERROR_RETURN;
+ 
+                                                case '(':
+                                                        if ((compile_block.
+                                                                 ctypes[ptr[3]] & ctype_digit) != 0) {
+                                                                ptr += 4;
+                                                                length += 3;
+                                                                while ((compile_block.
+                                                                                ctypes[*ptr] & ctype_digit) != 0)
+                                                                        ptr++;
+                                                                if (*ptr != ')') {
+                                                                        *errorptr = ERR26;
+                                                                        goto PCRE_ERROR_RETURN;
+                                                                }
+                                                        }
+                                                        else {
+                                                                ptr++;
+                                                                if (ptr[2] != '?' ||
+                                                                        (ptr[3] != '=' && ptr[3] != '!'
+                                                                         && ptr[3] != '<')) {
+                                                                        ptr += 2;
+                                                                        *errorptr = ERR28;
+                                                                        goto PCRE_ERROR_RETURN;
+                                                                }
+                                                        }
+                                                        break;
+ 
+                                                default:
+                                                        set = unset = 0;
+                                                        optset = &set;
+                                                        ptr += 2;
+ 
+                                                        for (;; ptr++) {
+                                                                c = *ptr;
+                                                                switch (c) {
+                                                                        case 'i':
+                                                                                *optset |= PCRE_CASELESS;
+                                                                                continue;
+ 
+                                                                        case 'm':
+                                                                                *optset |= PCRE_MULTILINE;
+                                                                                continue;
+ 
+                                                                        case 's':
+                                                                                *optset |= PCRE_DOTALL;
+                                                                                continue;
+ 
+                                                                        case 'x':
+                                                                                *optset |= PCRE_EXTENDED;
+                                                                                continue;
+ 
+                                                                        case 'X':
+                                                                                *optset |= PCRE_EXTRA;
+                                                                                continue;
+ 
+                                                                        case 'U':
+                                                                                *optset |= PCRE_UNGREEDY;
+                                                                                continue;
+ 
+                                                                        case '-':
+                                                                                optset = &unset;
+                                                                                continue;
+ 
+                                                                        case ')':
+                                                                                if (brastackptr == 0) {
+                                                                                        options =
+                                                                                                (options | set) & (~unset);
+                                                                                        set = unset = 0;
+                                                                                }
+ 
+                                                                        case ':':
+                                                                                if (((set | unset) & PCRE_IMS) != 0) {
+                                                                                        length += 4;
+                                                                                        branch_newextra = 2;
+                                                                                        if (((set | unset) &
+                                                                                                 PCRE_CASELESS) != 0)
+                                                                                                options |= PCRE_ICHANGED;
+                                                                                }
+                                                                                goto END_OPTIONS;
+ 
+                                                                        default:
+                                                                                *errorptr = ERR12;
+                                                                                goto PCRE_ERROR_RETURN;
+                                                                }
+                                                        }
+ 
+                                                  END_OPTIONS:
+                                                        if (c == ')') {
+                                                                if (branch_newextra == 2
+                                                                        && (branch_extra == 0
+                                                                                || branch_extra == 3))
+                                                                        branch_extra += branch_newextra;
+                                                                continue;
+                                                        }
+ 
+                                        }
+                                }
+ 
+                                else {
+                                        bracount++;
+                                        if (bracount > EXTRACT_BASIC_MAX)
+                                                bracket_length += 3;
+                                }
+ 
+                                if (brastackptr >= sizeof (brastack) / sizeof (int)) {
+                                        *errorptr = ERR19;
+                                        goto PCRE_ERROR_RETURN;
+                                }
+ 
+                                bralenstack[brastackptr] = branch_extra;
+                                branch_extra = branch_newextra;
+ 
+                                brastack[brastackptr++] = length;
+                                length += bracket_length;
+                                continue;
+ 
+                        case ')':
+                                length += 3;
+                                {
+                                        int minval = 1;
+                                        int maxval = 1;
+                                        int duplength;
+ 
+                                        if (brastackptr > 0) {
+                                                duplength = length - brastack[--brastackptr];
+                                                branch_extra = bralenstack[brastackptr];
+                                        }
+                                        else
+                                                duplength = 0;
+ 
+                                        if ((c = ptr[1]) == '{'
+                                                && is_counted_repeat(ptr + 2, &compile_block)) {
+                                                ptr =
+                                                        read_repeat_counts(ptr + 2, &minval, &maxval,
+                                                                                           errorptr, &compile_block);
+                                                if (*errorptr != NULL)
+                                                        goto PCRE_ERROR_RETURN;
+                                        }
+                                        else if (c == '*') {
+                                                minval = 0;
+                                                maxval = -1;
+                                                ptr++;
+                                        }
+                                        else if (c == '+') {
+                                                maxval = -1;
+                                                ptr++;
+                                        }
+                                        else if (c == '?') {
+                                                minval = 0;
+                                                ptr++;
+                                        }
+ 
+                                        if (minval == 0) {
+                                                length++;
+                                                if (maxval > 0)
+                                                        length += (maxval - 1) * (duplength + 7);
+                                        }
+ 
+                                        else {
+                                                length += (minval - 1) * duplength;
+                                                if (maxval > minval)
+                                                        length += (maxval - minval) * (duplength + 7) - 6;
+                                        }
+                                }
+                                continue;
+ 
+                          NORMAL_CHAR:
+                        default:
+                                length += 2;
+                                runlength = 0;
+                                do {
+                                        if ((options & PCRE_EXTENDED) != 0) {
+                                                if ((compile_block.ctypes[c] & ctype_space) != 0)
+                                                        continue;
+                                                if (c == '#') {
+                                                        while ((c = *(++ptr)) != 0 && c != '\n') ;
+                                                        continue;
+                                                }
+                                        }
+ 
+                                        if (c == '\\') {
+                                                const uschar *saveptr = ptr;
+                                                c = check_escape(&ptr, errorptr, bracount, options,
+                                                                                 FALSE, &compile_block);
+                                                if (*errorptr != NULL)
+                                                        goto PCRE_ERROR_RETURN;
+                                                if (c < 0) {
+                                                        ptr = saveptr;
+                                                        break;
+                                                }
+ 
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                if (c > 127 && (options & PCRE_UTF8) != 0) {
+                                                        int i;
+                                                        for (i = 0;
+                                                                 i < sizeof (utf8_table1) / sizeof (int); i++)
+                                                                if (c <= utf8_table1[i])
+                                                                        break;
+                                                        runlength += i;
+                                                }
+ #endif
+                                        }
+ 
+                                        runlength++;
+                                }
+ 
+                                while (runlength < MAXLIT &&
+                                           (compile_block.ctypes[c = *(++ptr)] & ctype_meta) ==
+                                           0);
+ 
+                                ptr--;
+                                length += runlength;
+                                continue;
+                }
+        }
+ 
+        length += 4;
+ 
+        if (length > 65539) {
+                *errorptr = ERR20;
+                return NULL;
+        }
+ 
+        size = length + offsetof(pcre_st, code[0]);
+        re = (pcre_st *) (pcre_malloc) (size);
+ 
+        if (re == NULL) {
+                *errorptr = ERR21;
+                return NULL;
+        }
+ 
+        re->magic_number = MAGIC_NUMBER;
+        re->size = size;
+        re->options = options;
+        re->tables = tables;
+ 
+        ptr = (const uschar *)pattern;
+        code = re->code;
+        *code = OP_BRA;
+        bracount = 0;
+        (void)compile_regex(options, -1, &bracount, &code, &ptr, errorptr, FALSE,
+                                                0, &reqchar, &countlits, &compile_block);
+        re->top_bracket = bracount;
+        re->top_backref = top_backref;
+ 
+        if (*errorptr == NULL && *ptr != 0)
+                *errorptr = ERR22;
+ 
+        *code++ = OP_END;
+        if (code - re->code > length)
+                *errorptr = ERR23;
+ 
+        if (top_backref > re->top_bracket)
+                *errorptr = ERR15;
+ 
+        if (*errorptr != NULL) {
+                (pcre_free) (re);
+          PCRE_ERROR_RETURN:
+                *erroroffset = ptr - (const uschar *)pattern;
+                return NULL;
+        }
+ 
+        if ((options & PCRE_ANCHORED) == 0) {
+                int temp_options = options;
+                if (is_anchored(re->code, &temp_options))
+                        re->options |= PCRE_ANCHORED;
+                else {
+                        int ch = find_firstchar(re->code, &temp_options);
+                        if (ch >= 0) {
+                                re->first_char = ch;
+                                re->options |= PCRE_FIRSTSET;
+                        }
+                        else if (is_startline(re->code))
+                                re->options |= PCRE_STARTLINE;
+                }
+        }
+ 
+        if (reqchar >= 0 && (countlits > 1 || (re->options & PCRE_FIRSTSET) == 0)) {
+                re->req_char = reqchar;
+                re->options |= PCRE_REQCHSET;
+        }
+ 
+        return (pcre *) re;
+ }
+ 
+ static BOOL
+ match_ref(int offset, register const uschar * eptr, int length,
+                  match_data * md, unsigned long int ims)
+ {
+        const uschar *p = md->start_subject + md->offset_vector[offset];
+ 
+        if (length > md->end_subject - eptr)
+                return FALSE;
+ 
+        if ((ims & PCRE_CASELESS) != 0) {
+                while (length-- > 0)
+                        if (md->lcc[*p++] != md->lcc[*eptr++])
+                                return FALSE;
+        }
+        else {
+                while (length-- > 0)
+                        if (*p++ != *eptr++)
+                                return FALSE;
+        }
+ 
+        return TRUE;
+ }
+ 
+ static BOOL
+ match(register const uschar * eptr, register const uschar * ecode,
+          int offset_top, match_data * md, unsigned long int ims,
+          eptrblock * eptrb, int flags)
+ {
+        unsigned long int original_ims = ims;
+        eptrblock newptrb;
+ 
+        if ((flags & match_isgroup) != 0) {
+                newptrb.prev = eptrb;
+                newptrb.saved_eptr = eptr;
+                eptrb = &newptrb;
+        }
+ 
+        for (;;) {
+                int op = (int)*ecode;
+                int min, max, ctype;
+                register int i;
+                register int c;
+                BOOL minimize = FALSE;
+ 
+                if (op > OP_BRA) {
+                        int offset;
+                        int number = op - OP_BRA;
+ 
+                        if (number > EXTRACT_BASIC_MAX)
+                                number = (ecode[4] << 8) | ecode[5];
+                        offset = number << 1;
+ 
+                        if (offset < md->offset_max) {
+                                int save_offset1 = md->offset_vector[offset];
+                                int save_offset2 = md->offset_vector[offset + 1];
+                                int save_offset3 = md->offset_vector[md->offset_end - number];
+ 
+                                md->offset_vector[md->offset_end - number] =
+                                        eptr - md->start_subject;
+ 
+                                do {
+                                        if (match
+                                                (eptr, ecode + 3, offset_top, md, ims, eptrb,
+                                                 match_isgroup))
+                                                return TRUE;
+                                        ecode += (ecode[1] << 8) + ecode[2];
+                                }
+                                while (*ecode == OP_ALT);
+ 
+                                md->offset_vector[offset] = save_offset1;
+                                md->offset_vector[offset + 1] = save_offset2;
+                                md->offset_vector[md->offset_end - number] = save_offset3;
+ 
+                                return FALSE;
+                        }
+ 
+                        else
+                                op = OP_BRA;
+                }
+ 
+                switch (op) {
+                        case OP_BRA:
+ 
+                                do {
+                                        if (match
+                                                (eptr, ecode + 3, offset_top, md, ims, eptrb,
+                                                 match_isgroup))
+                                                return TRUE;
+                                        ecode += (ecode[1] << 8) + ecode[2];
+                                }
+                                while (*ecode == OP_ALT);
+ 
+                                return FALSE;
+ 
+                        case OP_COND:
+                                if (ecode[3] == OP_CREF) {
+                                        int offset = (ecode[4] << 9) | (ecode[5] << 1);
+                                        return match(eptr,
+                                                                 ecode +
+                                                                 ((offset < offset_top
+                                                                   && md->offset_vector[offset] >=
+                                                                   0) ? 6 : 3 + (ecode[1] << 8) + ecode[2]),
+                                                                 offset_top, md, ims, eptrb, match_isgroup);
+                                }
+ 
+                                else {
+                                        if (match(eptr, ecode + 3, offset_top, md, ims, NULL,
+                                                          match_condassert | match_isgroup)) {
+                                                ecode += 3 + (ecode[4] << 8) + ecode[5];
+                                                while (*ecode == OP_ALT)
+                                                        ecode += (ecode[1] << 8) + ecode[2];
+                                        }
+                                        else
+                                                ecode += (ecode[1] << 8) + ecode[2];
+                                        return match(eptr, ecode + 3, offset_top, md, ims, eptrb,
+                                                                 match_isgroup);
+                                }
+ 
+                        case OP_CREF:
+                        case OP_BRANUMBER:
+                                ecode += 3;
+                                break;
+ 
+                        case OP_END:
+                                if (md->notempty && eptr == md->start_match)
+                                        return FALSE;
+                                md->end_match_ptr = eptr;
+                                md->end_offset_top = offset_top;
+                                return TRUE;
+ 
+                        case OP_OPT:
+                                ims = ecode[1];
+                                ecode += 2;
+ 
+                                break;
+ 
+                        case OP_ASSERT:
+                        case OP_ASSERTBACK:
+                                do {
+                                        if (match
+                                                (eptr, ecode + 3, offset_top, md, ims, NULL,
+                                                 match_isgroup))
+                                                break;
+                                        ecode += (ecode[1] << 8) + ecode[2];
+                                }
+                                while (*ecode == OP_ALT);
+                                if (*ecode == OP_KET)
+                                        return FALSE;
+ 
+                                if ((flags & match_condassert) != 0)
+                                        return TRUE;
+ 
+                                do
+                                        ecode += (ecode[1] << 8) + ecode[2];
+                                while (*ecode == OP_ALT);
+                                ecode += 3;
+                                offset_top = md->end_offset_top;
+                                continue;
+ 
+                        case OP_ASSERT_NOT:
+                        case OP_ASSERTBACK_NOT:
+                                do {
+                                        if (match
+                                                (eptr, ecode + 3, offset_top, md, ims, NULL,
+                                                 match_isgroup))
+                                                return FALSE;
+                                        ecode += (ecode[1] << 8) + ecode[2];
+                                }
+                                while (*ecode == OP_ALT);
+ 
+                                if ((flags & match_condassert) != 0)
+                                        return TRUE;
+ 
+                                ecode += 3;
+                                continue;
+ 
+                        case OP_REVERSE:
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                c = (ecode[1] << 8) + ecode[2];
+                                for (i = 0; i < c; i++) {
+                                        eptr--;
+                                        BACKCHAR(eptr)
+                                }
+ #else
+                                eptr -= (ecode[1] << 8) + ecode[2];
+ #endif
+ 
+                                if (eptr < md->start_subject)
+                                        return FALSE;
+                                ecode += 3;
+                                break;
+ 
+                        case OP_RECURSE:
+                                {
+                                        BOOL rc;
+                                        int *save;
+                                        int stacksave[15];
+ 
+                                        c = md->offset_max;
+ 
+                                        if (c < 16)
+                                                save = stacksave;
+                                        else {
+                                                save = (int *)(pcre_malloc) ((c + 1) * sizeof (int));
+                                                if (save == NULL) {
+                                                        save = stacksave;
+                                                        c = 15;
+                                                }
+                                        }
+ 
+                                        for (i = 1; i <= c; i++)
+                                                save[i] = md->offset_vector[md->offset_end - i];
+                                        rc = match(eptr, md->start_pattern, offset_top, md, ims,
+                                                           eptrb, match_isgroup);
+                                        for (i = 1; i <= c; i++)
+                                                md->offset_vector[md->offset_end - i] = save[i];
+                                        if (save != stacksave)
+                                                (pcre_free) (save);
+                                        if (!rc)
+                                                return FALSE;
+ 
+                                        offset_top = md->end_offset_top;
+                                        eptr = md->end_match_ptr;
+                                        ecode++;
+                                }
+                                break;
+ 
+                        case OP_ONCE:
+                                {
+                                        const uschar *prev = ecode;
+                                        const uschar *saved_eptr = eptr;
+ 
+                                        do {
+                                                if (match
+                                                        (eptr, ecode + 3, offset_top, md, ims, eptrb,
+                                                         match_isgroup))
+                                                        break;
+                                                ecode += (ecode[1] << 8) + ecode[2];
+                                        }
+                                        while (*ecode == OP_ALT);
+ 
+                                        if (*ecode != OP_ONCE && *ecode != OP_ALT)
+                                                return FALSE;
+ 
+                                        do
+                                                ecode += (ecode[1] << 8) + ecode[2];
+                                        while (*ecode == OP_ALT);
+ 
+                                        offset_top = md->end_offset_top;
+                                        eptr = md->end_match_ptr;
+ 
+                                        if (*ecode == OP_KET || eptr == saved_eptr) {
+                                                ecode += 3;
+                                                break;
+                                        }
+ 
+                                        if (ecode[3] == OP_OPT) {
+                                                ims = (ims & ~PCRE_IMS) | ecode[4];
+ 
+                                        }
+ 
+                                        if (*ecode == OP_KETRMIN) {
+                                                if (match
+                                                        (eptr, ecode + 3, offset_top, md, ims, eptrb, 0)
+                                                        || match(eptr, prev, offset_top, md, ims, eptrb,
+                                                                         match_isgroup))
+                                                        return TRUE;
+                                        }
+                                        else {
+                                                if (match
+                                                        (eptr, prev, offset_top, md, ims, eptrb,
+                                                         match_isgroup)
+                                                        || match(eptr, ecode + 3, offset_top, md, ims,
+                                                                         eptrb, 0))
+                                                        return TRUE;
+                                        }
+                                }
+                                return FALSE;
+ 
+                        case OP_ALT:
+                                do
+                                        ecode += (ecode[1] << 8) + ecode[2];
+                                while (*ecode == OP_ALT);
+                                break;
+ 
+                        case OP_BRAZERO:
+                                {
+                                        const uschar *next = ecode + 1;
+                                        if (match
+                                                (eptr, next, offset_top, md, ims, eptrb,
+                                                 match_isgroup))
+                                                return TRUE;
+                                        do
+                                                next += (next[1] << 8) + next[2];
+                                        while (*next == OP_ALT);
+                                        ecode = next + 3;
+                                }
+                                break;
+ 
+                        case OP_BRAMINZERO:
+                                {
+                                        const uschar *next = ecode + 1;
+                                        do
+                                                next += (next[1] << 8) + next[2];
+                                        while (*next == OP_ALT);
+                                        if (match
+                                                (eptr, next + 3, offset_top, md, ims, eptrb,
+                                                 match_isgroup))
+                                                return TRUE;
+                                        ecode++;
+                                }
+                                break;
+ 
+                        case OP_KET:
+                        case OP_KETRMIN:
+                        case OP_KETRMAX:
+                                {
+                                        const uschar *prev = ecode - (ecode[1] << 8) - ecode[2];
+                                        const uschar *saved_eptr = eptrb->saved_eptr;
+ 
+                                        eptrb = eptrb->prev;
+ 
+                                        if (*prev == OP_ASSERT || *prev == OP_ASSERT_NOT ||
+                                                *prev == OP_ASSERTBACK || *prev == OP_ASSERTBACK_NOT
+                                                || *prev == OP_ONCE) {
+                                                md->end_match_ptr = eptr;
+                                                md->end_offset_top = offset_top;
+                                                return TRUE;
+                                        }
+ 
+                                        if (*prev != OP_COND) {
+                                                int offset;
+                                                int number = *prev - OP_BRA;
+ 
+                                                if (number > EXTRACT_BASIC_MAX)
+                                                        number = (prev[4] << 8) | prev[5];
+                                                offset = number << 1;
+ 
+                                                if (number > 0) {
+                                                        if (offset >= md->offset_max)
+                                                                md->offset_overflow = TRUE;
+                                                        else {
+                                                                md->offset_vector[offset] =
+                                                                        md->offset_vector[md->offset_end -
+                                                                                                          number];
+                                                                md->offset_vector[offset + 1] =
+                                                                        eptr - md->start_subject;
+                                                                if (offset_top <= offset)
+                                                                        offset_top = offset + 2;
+                                                        }
+                                                }
+                                        }
+ 
+                                        ims = original_ims;
+ 
+                                        if (*ecode == OP_KET || eptr == saved_eptr) {
+                                                ecode += 3;
+                                                break;
+                                        }
+ 
+                                        if (*ecode == OP_KETRMIN) {
+                                                if (match
+                                                        (eptr, ecode + 3, offset_top, md, ims, eptrb, 0)
+                                                        || match(eptr, prev, offset_top, md, ims, eptrb,
+                                                                         match_isgroup))
+                                                        return TRUE;
+                                        }
+                                        else {
+                                                if (match
+                                                        (eptr, prev, offset_top, md, ims, eptrb,
+                                                         match_isgroup)
+                                                        || match(eptr, ecode + 3, offset_top, md, ims,
+                                                                         eptrb, 0))
+                                                        return TRUE;
+                                        }
+                                }
+                                return FALSE;
+ 
+                        case OP_CIRC:
+                                if (md->notbol && eptr == md->start_subject)
+                                        return FALSE;
+                                if ((ims & PCRE_MULTILINE) != 0) {
+                                        if (eptr != md->start_subject && eptr[-1] != '\n')
+                                                return FALSE;
+                                        ecode++;
+                                        break;
+                                }
+ 
+                        case OP_SOD:
+                                if (eptr != md->start_subject)
+                                        return FALSE;
+                                ecode++;
+                                break;
+ 
+                        case OP_DOLL:
+                                if ((ims & PCRE_MULTILINE) != 0) {
+                                        if (eptr < md->end_subject) {
+                                                if (*eptr != '\n')
+                                                        return FALSE;
+                                        }
+                                        else {
+                                                if (md->noteol)
+                                                        return FALSE;
+                                        }
+                                        ecode++;
+                                        break;
+                                }
+                                else {
+                                        if (md->noteol)
+                                                return FALSE;
+                                        if (!md->endonly) {
+                                                if (eptr < md->end_subject - 1 ||
+                                                        (eptr == md->end_subject - 1 && *eptr != '\n'))
+                                                        return FALSE;
+ 
+                                                ecode++;
+                                                break;
+                                        }
+                                }
+                        case OP_EOD:
+                                if (eptr < md->end_subject)
+                                        return FALSE;
+                                ecode++;
+                                break;
+ 
+                        case OP_EODN:
+                                if (eptr < md->end_subject - 1 ||
+                                        (eptr == md->end_subject - 1 && *eptr != '\n'))
+                                        return FALSE;
+                                ecode++;
+                                break;
+ 
+                        case OP_NOT_WORD_BOUNDARY:
+                        case OP_WORD_BOUNDARY:
+                                {
+                                        BOOL prev_is_word = (eptr != md->start_subject) &&
+                                                ((md->ctypes[eptr[-1]] & ctype_word) != 0);
+                                        BOOL cur_is_word = (eptr < md->end_subject) &&
+                                                ((md->ctypes[*eptr] & ctype_word) != 0);
+                                        if ((*ecode++ == OP_WORD_BOUNDARY) ?
+                                                cur_is_word == prev_is_word : cur_is_word !=
+                                                prev_is_word)
+                                                return FALSE;
+                                }
+                                break;
+ 
+                        case OP_ANY:
+                                if ((ims & PCRE_DOTALL) == 0 && eptr < md->end_subject
+                                        && *eptr == '\n')
+                                        return FALSE;
+                                if (eptr++ >= md->end_subject)
+                                        return FALSE;
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                if (md->utf8)
+                                        while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80)
+                                                eptr++;
+ #endif
+                                ecode++;
+                                break;
+ 
+                        case OP_NOT_DIGIT:
+                                if (eptr >= md->end_subject ||
+                                        (md->ctypes[*eptr++] & ctype_digit) != 0)
+                                        return FALSE;
+                                ecode++;
+                                break;
+ 
+                        case OP_DIGIT:
+                                if (eptr >= md->end_subject ||
+                                        (md->ctypes[*eptr++] & ctype_digit) == 0)
+                                        return FALSE;
+                                ecode++;
+                                break;
+ 
+                        case OP_NOT_WHITESPACE:
+                                if (eptr >= md->end_subject ||
+                                        (md->ctypes[*eptr++] & ctype_space) != 0)
+                                        return FALSE;
+                                ecode++;
+                                break;
+ 
+                        case OP_WHITESPACE:
+                                if (eptr >= md->end_subject ||
+                                        (md->ctypes[*eptr++] & ctype_space) == 0)
+                                        return FALSE;
+                                ecode++;
+                                break;
+ 
+                        case OP_NOT_WORDCHAR:
+                                if (eptr >= md->end_subject ||
+                                        (md->ctypes[*eptr++] & ctype_word) != 0)
+                                        return FALSE;
+                                ecode++;
+                                break;
+ 
+                        case OP_WORDCHAR:
+                                if (eptr >= md->end_subject ||
+                                        (md->ctypes[*eptr++] & ctype_word) == 0)
+                                        return FALSE;
+                                ecode++;
+                                break;
+ 
+                        case OP_REF:
+                                {
+                                        int length;
+                                        int offset = (ecode[1] << 9) | (ecode[2] << 1);
+                                        ecode += 3;
+ 
+                                        length = (offset >= offset_top
+                                                          || md->offset_vector[offset] <
+                                                          0) ? md->end_subject - eptr +
+                                                1 : md->offset_vector[offset + 1] -
+                                                md->offset_vector[offset];
+ 
+                                        switch (*ecode) {
+                                                case OP_CRSTAR:
+                                                case OP_CRMINSTAR:
+                                                case OP_CRPLUS:
+                                                case OP_CRMINPLUS:
+                                                case OP_CRQUERY:
+                                                case OP_CRMINQUERY:
+                                                        c = *ecode++ - OP_CRSTAR;
+                                                        minimize = (c & 1) != 0;
+                                                        min = rep_min[c];
+                                                        max = rep_max[c];
+                                                        if (max == 0)
+                                                                max = INT_MAX;
+                                                        break;
+ 
+                                                case OP_CRRANGE:
+                                                case OP_CRMINRANGE:
+                                                        minimize = (*ecode == OP_CRMINRANGE);
+                                                        min = (ecode[1] << 8) + ecode[2];
+                                                        max = (ecode[3] << 8) + ecode[4];
+                                                        if (max == 0)
+                                                                max = INT_MAX;
+                                                        ecode += 5;
+                                                        break;
+ 
+                                                default:
+                                                        if (!match_ref(offset, eptr, length, md, ims))
+                                                                return FALSE;
+                                                        eptr += length;
+                                                        continue;
+                                        }
+ 
+                                        if (length == 0)
+                                                continue;
+ 
+                                        for (i = 1; i <= min; i++) {
+                                                if (!match_ref(offset, eptr, length, md, ims))
+                                                        return FALSE;
+                                                eptr += length;
+                                        }
+ 
+                                        if (min == max)
+                                                continue;
+ 
+                                        if (minimize) {
+                                                for (i = min;; i++) {
+                                                        if (match
+                                                                (eptr, ecode, offset_top, md, ims, eptrb, 0))
+                                                                return TRUE;
+                                                        if (i >= max
+                                                                || !match_ref(offset, eptr, length, md, ims))
+                                                                return FALSE;
+                                                        eptr += length;
+                                                }
+                                        }
+ 
+                                        else {
+                                                const uschar *pp = eptr;
+                                                for (i = min; i < max; i++) {
+                                                        if (!match_ref(offset, eptr, length, md, ims))
+                                                                break;
+                                                        eptr += length;
+                                                }
+                                                while (eptr >= pp) {
+                                                        if (match
+                                                                (eptr, ecode, offset_top, md, ims, eptrb, 0))
+                                                                return TRUE;
+                                                        eptr -= length;
+                                                }
+                                                return FALSE;
+                                        }
+                                }
+ 
+                        case OP_CLASS:
+                                {
+                                        const uschar *data = ecode + 1;
+                                        ecode += 33;
+ 
+                                        switch (*ecode) {
+                                                case OP_CRSTAR:
+                                                case OP_CRMINSTAR:
+                                                case OP_CRPLUS:
+                                                case OP_CRMINPLUS:
+                                                case OP_CRQUERY:
+                                                case OP_CRMINQUERY:
+                                                        c = *ecode++ - OP_CRSTAR;
+                                                        minimize = (c & 1) != 0;
+                                                        min = rep_min[c];
+                                                        max = rep_max[c];
+                                                        if (max == 0)
+                                                                max = INT_MAX;
+                                                        break;
+ 
+                                                case OP_CRRANGE:
+                                                case OP_CRMINRANGE:
+                                                        minimize = (*ecode == OP_CRMINRANGE);
+                                                        min = (ecode[1] << 8) + ecode[2];
+                                                        max = (ecode[3] << 8) + ecode[4];
+                                                        if (max == 0)
+                                                                max = INT_MAX;
+                                                        ecode += 5;
+                                                        break;
+ 
+                                                default:
+                                                        min = max = 1;
+                                                        break;
+                                        }
+ 
+                                        for (i = 1; i <= min; i++) {
+                                                if (eptr >= md->end_subject)
+                                                        return FALSE;
+                                                GETCHARINC(c, eptr)
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                        if (c > 255)
+                                                        return FALSE;
+ #endif
+ 
+                                                if ((data[c / 8] & (1 << (c & 7))) != 0)
+                                                        continue;
+                                                return FALSE;
+                                        }
+ 
+                                        if (min == max)
+                                                continue;
+ 
+                                        if (minimize) {
+                                                for (i = min;; i++) {
+                                                        if (match
+                                                                (eptr, ecode, offset_top, md, ims, eptrb, 0))
+                                                                return TRUE;
+                                                        if (i >= max || eptr >= md->end_subject)
+                                                                return FALSE;
+                                                        GETCHARINC(c, eptr)
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                                if (c > 255)
+                                                                return FALSE;
+ #endif
+                                                        if ((data[c / 8] & (1 << (c & 7))) != 0)
+                                                                continue;
+                                                        return FALSE;
+                                                }
+                                        }
+ 
+                                        else {
+                                                const uschar *pp = eptr;
+                                                int len = 1;
+                                                for (i = min; i < max; i++) {
+                                                        if (eptr >= md->end_subject)
+                                                                break;
+                                                        GETCHARLEN(c, eptr, len)
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                                if (c > 255)
+                                                                break;
+ #endif
+                                                        if ((data[c / 8] & (1 << (c & 7))) == 0)
+                                                                break;
+                                                        eptr += len;
+                                                }
+ 
+                                                while (eptr >= pp) {
+                                                        if (match
+                                                                (eptr--, ecode, offset_top, md, ims, eptrb,
+                                                                 0))
+                                                                return TRUE;
+ 
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                        BACKCHAR(eptr)
+ #endif
+                                                }
+                                                return FALSE;
+                                        }
+                                }
+ 
+                        case OP_CHARS:
+                                {
+                                        register int length = ecode[1];
+                                        ecode += 2;
+ 
+                                        if (length > md->end_subject - eptr)
+                                                return FALSE;
+                                        if ((ims & PCRE_CASELESS) != 0) {
+                                                while (length-- > 0)
+                                                        if (md->lcc[*ecode++] != md->lcc[*eptr++])
+                                                                return FALSE;
+                                        }
+                                        else {
+                                                while (length-- > 0)
+                                                        if (*ecode++ != *eptr++)
+                                                                return FALSE;
+                                        }
+                                }
+                                break;
+ 
+                        case OP_EXACT:
+                                min = max = (ecode[1] << 8) + ecode[2];
+                                ecode += 3;
+                                goto REPEATCHAR;
+ 
+                        case OP_UPTO:
+                        case OP_MINUPTO:
+                                min = 0;
+                                max = (ecode[1] << 8) + ecode[2];
+                                minimize = *ecode == OP_MINUPTO;
+                                ecode += 3;
+                                goto REPEATCHAR;
+ 
+                        case OP_STAR:
+                        case OP_MINSTAR:
+                        case OP_PLUS:
+                        case OP_MINPLUS:
+                        case OP_QUERY:
+                        case OP_MINQUERY:
+                                c = *ecode++ - OP_STAR;
+                                minimize = (c & 1) != 0;
+                                min = rep_min[c];
+                                max = rep_max[c];
+                                if (max == 0)
+                                        max = INT_MAX;
+ 
+                          REPEATCHAR:
+                                if (min > md->end_subject - eptr)
+                                        return FALSE;
+                                c = *ecode++;
+ 
+                                if ((ims & PCRE_CASELESS) != 0) {
+                                        c = md->lcc[c];
+                                        for (i = 1; i <= min; i++)
+                                                if (c != md->lcc[*eptr++])
+                                                        return FALSE;
+                                        if (min == max)
+                                                continue;
+                                        if (minimize) {
+                                                for (i = min;; i++) {
+                                                        if (match
+                                                                (eptr, ecode, offset_top, md, ims, eptrb, 0))
+                                                                return TRUE;
+                                                        if (i >= max || eptr >= md->end_subject ||
+                                                                c != md->lcc[*eptr++])
+                                                                return FALSE;
+                                                }
+                                        }
+                                        else {
+                                                const uschar *pp = eptr;
+                                                for (i = min; i < max; i++) {
+                                                        if (eptr >= md->end_subject
+                                                                || c != md->lcc[*eptr])
+                                                                break;
+                                                        eptr++;
+                                                }
+                                                while (eptr >= pp)
+                                                        if (match
+                                                                (eptr--, ecode, offset_top, md, ims, eptrb,
+                                                                 0))
+                                                                return TRUE;
+                                                return FALSE;
+                                        }
+                                }
+ 
+                                else {
+                                        for (i = 1; i <= min; i++)
+                                                if (c != *eptr++)
+                                                        return FALSE;
+                                        if (min == max)
+                                                continue;
+                                        if (minimize) {
+                                                for (i = min;; i++) {
+                                                        if (match
+                                                                (eptr, ecode, offset_top, md, ims, eptrb, 0))
+                                                                return TRUE;
+                                                        if (i >= max || eptr >= md->end_subject
+                                                                || c != *eptr++)
+                                                                return FALSE;
+                                                }
+                                        }
+                                        else {
+                                                const uschar *pp = eptr;
+                                                for (i = min; i < max; i++) {
+                                                        if (eptr >= md->end_subject || c != *eptr)
+                                                                break;
+                                                        eptr++;
+                                                }
+                                                while (eptr >= pp)
+                                                        if (match
+                                                                (eptr--, ecode, offset_top, md, ims, eptrb,
+                                                                 0))
+                                                                return TRUE;
+                                                return FALSE;
+                                        }
+                                }
+ 
+                        case OP_NOT:
+                                if (eptr >= md->end_subject)
+                                        return FALSE;
+                                ecode++;
+                                if ((ims & PCRE_CASELESS) != 0) {
+                                        if (md->lcc[*ecode++] == md->lcc[*eptr++])
+                                                return FALSE;
+                                }
+                                else {
+                                        if (*ecode++ == *eptr++)
+                                                return FALSE;
+                                }
+                                break;
+ 
+                        case OP_NOTEXACT:
+                                min = max = (ecode[1] << 8) + ecode[2];
+                                ecode += 3;
+                                goto REPEATNOTCHAR;
+ 
+                        case OP_NOTUPTO:
+                        case OP_NOTMINUPTO:
+                                min = 0;
+                                max = (ecode[1] << 8) + ecode[2];
+                                minimize = *ecode == OP_NOTMINUPTO;
+                                ecode += 3;
+                                goto REPEATNOTCHAR;
+ 
+                        case OP_NOTSTAR:
+                        case OP_NOTMINSTAR:
+                        case OP_NOTPLUS:
+                        case OP_NOTMINPLUS:
+                        case OP_NOTQUERY:
+                        case OP_NOTMINQUERY:
+                                c = *ecode++ - OP_NOTSTAR;
+                                minimize = (c & 1) != 0;
+                                min = rep_min[c];
+                                max = rep_max[c];
+                                if (max == 0)
+                                        max = INT_MAX;
+ 
+                          REPEATNOTCHAR:
+                                if (min > md->end_subject - eptr)
+                                        return FALSE;
+                                c = *ecode++;
+ 
+                                if ((ims & PCRE_CASELESS) != 0) {
+                                        c = md->lcc[c];
+                                        for (i = 1; i <= min; i++)
+                                                if (c == md->lcc[*eptr++])
+                                                        return FALSE;
+                                        if (min == max)
+                                                continue;
+                                        if (minimize) {
+                                                for (i = min;; i++) {
+                                                        if (match
+                                                                (eptr, ecode, offset_top, md, ims, eptrb, 0))
+                                                                return TRUE;
+                                                        if (i >= max || eptr >= md->end_subject ||
+                                                                c == md->lcc[*eptr++])
+                                                                return FALSE;
+                                                }
+                                        }
+                                        else {
+                                                const uschar *pp = eptr;
+                                                for (i = min; i < max; i++) {
+                                                        if (eptr >= md->end_subject
+                                                                || c == md->lcc[*eptr])
+                                                                break;
+                                                        eptr++;
+                                                }
+                                                while (eptr >= pp)
+                                                        if (match
+                                                                (eptr--, ecode, offset_top, md, ims, eptrb,
+                                                                 0))
+                                                                return TRUE;
+                                                return FALSE;
+                                        }
+                                }
+ 
+                                else {
+                                        for (i = 1; i <= min; i++)
+                                                if (c == *eptr++)
+                                                        return FALSE;
+                                        if (min == max)
+                                                continue;
+                                        if (minimize) {
+                                                for (i = min;; i++) {
+                                                        if (match
+                                                                (eptr, ecode, offset_top, md, ims, eptrb, 0))
+                                                                return TRUE;
+                                                        if (i >= max || eptr >= md->end_subject
+                                                                || c == *eptr++)
+                                                                return FALSE;
+                                                }
+                                        }
+                                        else {
+                                                const uschar *pp = eptr;
+                                                for (i = min; i < max; i++) {
+                                                        if (eptr >= md->end_subject || c == *eptr)
+                                                                break;
+                                                        eptr++;
+                                                }
+                                                while (eptr >= pp)
+                                                        if (match
+                                                                (eptr--, ecode, offset_top, md, ims, eptrb,
+                                                                 0))
+                                                                return TRUE;
+                                                return FALSE;
+                                        }
+                                }
+ 
+                        case OP_TYPEEXACT:
+                                min = max = (ecode[1] << 8) + ecode[2];
+                                minimize = TRUE;
+                                ecode += 3;
+                                goto REPEATTYPE;
+ 
+                        case OP_TYPEUPTO:
+                        case OP_TYPEMINUPTO:
+                                min = 0;
+                                max = (ecode[1] << 8) + ecode[2];
+                                minimize = *ecode == OP_TYPEMINUPTO;
+                                ecode += 3;
+                                goto REPEATTYPE;
+ 
+                        case OP_TYPESTAR:
+                        case OP_TYPEMINSTAR:
+                        case OP_TYPEPLUS:
+                        case OP_TYPEMINPLUS:
+                        case OP_TYPEQUERY:
+                        case OP_TYPEMINQUERY:
+                                c = *ecode++ - OP_TYPESTAR;
+                                minimize = (c & 1) != 0;
+                                min = rep_min[c];
+                                max = rep_max[c];
+                                if (max == 0)
+                                        max = INT_MAX;
+ 
+                          REPEATTYPE:
+                                ctype = *ecode++;
+ 
+                                if (min > md->end_subject - eptr)
+                                        return FALSE;
+                                if (min > 0)
+                                        switch (ctype) {
+                                                case OP_ANY:
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                        if (md->utf8) {
+                                                                for (i = 1; i <= min; i++) {
+                                                                        if (eptr >= md->end_subject ||
+                                                                                (*eptr++ == '\n'
+                                                                                 && (ims & PCRE_DOTALL) == 0))
+                                                                                return FALSE;
+                                                                        while (eptr < md->end_subject
+                                                                                   && (*eptr & 0xc0) == 0x80)
+                                                                                eptr++;
+                                                                }
+                                                                break;
+                                                        }
+ #endif
+                                                        if ((ims & PCRE_DOTALL) == 0) {
+                                                                for (i = 1; i <= min; i++)
+                                                                        if (*eptr++ == '\n')
+                                                                                return FALSE;
+                                                        }
+                                                        else
+                                                                eptr += min;
+                                                        break;
+ 
+                                                case OP_NOT_DIGIT:
+                                                        for (i = 1; i <= min; i++)
+                                                                if ((md->ctypes[*eptr++] & ctype_digit) != 0)
+                                                                        return FALSE;
+                                                        break;
+ 
+                                                case OP_DIGIT:
+                                                        for (i = 1; i <= min; i++)
+                                                                if ((md->ctypes[*eptr++] & ctype_digit) == 0)
+                                                                        return FALSE;
+                                                        break;
+ 
+                                                case OP_NOT_WHITESPACE:
+                                                        for (i = 1; i <= min; i++)
+                                                                if ((md->ctypes[*eptr++] & ctype_space) != 0)
+                                                                        return FALSE;
+                                                        break;
+ 
+                                                case OP_WHITESPACE:
+                                                        for (i = 1; i <= min; i++)
+                                                                if ((md->ctypes[*eptr++] & ctype_space) == 0)
+                                                                        return FALSE;
+                                                        break;
+ 
+                                                case OP_NOT_WORDCHAR:
+                                                        for (i = 1; i <= min; i++)
+                                                                if ((md->ctypes[*eptr++] & ctype_word) != 0)
+                                                                        return FALSE;
+                                                        break;
+ 
+                                                case OP_WORDCHAR:
+                                                        for (i = 1; i <= min; i++)
+                                                                if ((md->ctypes[*eptr++] & ctype_word) == 0)
+                                                                        return FALSE;
+                                                        break;
+                                        }
+ 
+                                if (min == max)
+                                        continue;
+ 
+                                if (minimize) {
+                                        for (i = min;; i++) {
+                                                if (match(eptr, ecode, offset_top, md, ims, eptrb, 0))
+                                                        return TRUE;
+                                                if (i >= max || eptr >= md->end_subject)
+                                                        return FALSE;
+ 
+                                                c = *eptr++;
+                                                switch (ctype) {
+                                                        case OP_ANY:
+                                                                if ((ims & PCRE_DOTALL) == 0 && c == '\n')
+                                                                        return FALSE;
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                                if (md->utf8)
+                                                                        while (eptr < md->end_subject
+                                                                                   && (*eptr & 0xc0) == 0x80)
+                                                                                eptr++;
+ #endif
+                                                                break;
+ 
+                                                        case OP_NOT_DIGIT:
+                                                                if ((md->ctypes[c] & ctype_digit) != 0)
+                                                                        return FALSE;
+                                                                break;
+ 
+                                                        case OP_DIGIT:
+                                                                if ((md->ctypes[c] & ctype_digit) == 0)
+                                                                        return FALSE;
+                                                                break;
+ 
+                                                        case OP_NOT_WHITESPACE:
+                                                                if ((md->ctypes[c] & ctype_space) != 0)
+                                                                        return FALSE;
+                                                                break;
+ 
+                                                        case OP_WHITESPACE:
+                                                                if ((md->ctypes[c] & ctype_space) == 0)
+                                                                        return FALSE;
+                                                                break;
+ 
+                                                        case OP_NOT_WORDCHAR:
+                                                                if ((md->ctypes[c] & ctype_word) != 0)
+                                                                        return FALSE;
+                                                                break;
+ 
+                                                        case OP_WORDCHAR:
+                                                                if ((md->ctypes[c] & ctype_word) == 0)
+                                                                        return FALSE;
+                                                                break;
+                                                }
+                                        }
+                                }
+ 
+                                else {
+                                        const uschar *pp = eptr;
+                                        switch (ctype) {
+                                                case OP_ANY:
+ 
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                        if (md->utf8 && max < INT_MAX) {
+                                                                if ((ims & PCRE_DOTALL) == 0) {
+                                                                        for (i = min; i < max; i++) {
+                                                                                if (eptr >= md->end_subject
+                                                                                        || *eptr++ == '\n')
+                                                                                        break;
+                                                                                while (eptr < md->end_subject
+                                                                                           && (*eptr & 0xc0) == 0x80)
+                                                                                        eptr++;
+                                                                        }
+                                                                }
+                                                                else {
+                                                                        for (i = min; i < max; i++) {
+                                                                                eptr++;
+                                                                                while (eptr < md->end_subject
+                                                                                           && (*eptr & 0xc0) == 0x80)
+                                                                                        eptr++;
+                                                                        }
+                                                                }
+                                                                break;
+                                                        }
+ #endif
+                                                        if ((ims & PCRE_DOTALL) == 0) {
+                                                                for (i = min; i < max; i++) {
+                                                                        if (eptr >= md->end_subject
+                                                                                || *eptr == '\n')
+                                                                                break;
+                                                                        eptr++;
+                                                                }
+                                                        }
+                                                        else {
+                                                                c = max - min;
+                                                                if (c > md->end_subject - eptr)
+                                                                        c = md->end_subject - eptr;
+                                                                eptr += c;
+                                                        }
+                                                        break;
+ 
+                                                case OP_NOT_DIGIT:
+                                                        for (i = min; i < max; i++) {
+                                                                if (eptr >= md->end_subject
+                                                                        || (md->ctypes[*eptr] & ctype_digit) != 0)
+                                                                        break;
+                                                                eptr++;
+                                                        }
+                                                        break;
+ 
+                                                case OP_DIGIT:
+                                                        for (i = min; i < max; i++) {
+                                                                if (eptr >= md->end_subject
+                                                                        || (md->ctypes[*eptr] & ctype_digit) == 0)
+                                                                        break;
+                                                                eptr++;
+                                                        }
+                                                        break;
+ 
+                                                case OP_NOT_WHITESPACE:
+                                                        for (i = min; i < max; i++) {
+                                                                if (eptr >= md->end_subject
+                                                                        || (md->ctypes[*eptr] & ctype_space) != 0)
+                                                                        break;
+                                                                eptr++;
+                                                        }
+                                                        break;
+ 
+                                                case OP_WHITESPACE:
+                                                        for (i = min; i < max; i++) {
+                                                                if (eptr >= md->end_subject
+                                                                        || (md->ctypes[*eptr] & ctype_space) == 0)
+                                                                        break;
+                                                                eptr++;
+                                                        }
+                                                        break;
+ 
+                                                case OP_NOT_WORDCHAR:
+                                                        for (i = min; i < max; i++) {
+                                                                if (eptr >= md->end_subject
+                                                                        || (md->ctypes[*eptr] & ctype_word) != 0)
+                                                                        break;
+                                                                eptr++;
+                                                        }
+                                                        break;
+ 
+                                                case OP_WORDCHAR:
+                                                        for (i = min; i < max; i++) {
+                                                                if (eptr >= md->end_subject
+                                                                        || (md->ctypes[*eptr] & ctype_word) == 0)
+                                                                        break;
+                                                                eptr++;
+                                                        }
+                                                        break;
+                                        }
+ 
+                                        while (eptr >= pp) {
+                                                if (match
+                                                        (eptr--, ecode, offset_top, md, ims, eptrb, 0))
+                                                        return TRUE;
+ #ifdef RC_PCRE_SUPPORT_UTF8
+                                                if (md->utf8)
+                                                        while (eptr > pp && (*eptr & 0xc0) == 0x80)
+                                                                eptr--;
+ #endif
+                                        }
+                                        return FALSE;
+                                }
+ 
+                        default:
+ 
+                                md->errorcode = PCRE_ERROR_UNKNOWN_NODE;
+                                return FALSE;
+                }
+ 
+        }
+ }
+ 
+ int
+ pcre_exec(const pcre * external_re, const pcre_extra * external_extra,
+                  const char *subject, int length, int start_offset, int options,
+                  int *offsets, int offsetcount)
+ {
+        int resetcount, ocount;
+        int first_char = -1;
+        int req_char = -1;
+        int req_char2 = -1;
+        unsigned long int ims = 0;
+        match_data match_block;
+        const uschar *start_bits = NULL;
+        const uschar *start_match = (const uschar *)subject + start_offset;
+        const uschar *end_subject;
+        const uschar *req_char_ptr = start_match - 1;
+        const pcre_st *re = (const pcre_st *)external_re;
+        const pcre_extra_st *extra = (const pcre_extra_st *)external_extra;
+        BOOL using_temporary_offsets = FALSE;
+        BOOL anchored;
+        BOOL startline;
+ 
+        if ((options & ~PUBLIC_EXEC_OPTIONS) != 0)
+                return PCRE_ERROR_BADOPTION;
+ 
+        if (re == NULL || subject == NULL || (offsets == NULL && offsetcount > 0))
+                return PCRE_ERROR_NULL;
+        if (re->magic_number != MAGIC_NUMBER)
+                return PCRE_ERROR_BADMAGIC;
+ 
+        anchored = ((re->options | options) & PCRE_ANCHORED) != 0;
+        startline = (re->options & PCRE_STARTLINE) != 0;
+ 
+        match_block.start_pattern = re->code;
+        match_block.start_subject = (const uschar *)subject;
+        match_block.end_subject = match_block.start_subject + length;
+        end_subject = match_block.end_subject;
+ 
+        match_block.endonly = (re->options & PCRE_DOLLAR_ENDONLY) != 0;
+        match_block.utf8 = (re->options & PCRE_UTF8) != 0;
+ 
+        match_block.notbol = (options & PCRE_NOTBOL) != 0;
+        match_block.noteol = (options & PCRE_NOTEOL) != 0;
+        match_block.notempty = (options & PCRE_NOTEMPTY) != 0;
+ 
+        match_block.errorcode = PCRE_ERROR_NOMATCH;
+ 
+        match_block.lcc = re->tables + lcc_offset;
+        match_block.ctypes = re->tables + ctypes_offset;
+ 
+        ims = re->options & (PCRE_CASELESS | PCRE_MULTILINE | PCRE_DOTALL);
+ 
+        ocount = offsetcount - (offsetcount % 3);
+ 
+        if (re->top_backref > 0 && re->top_backref >= ocount / 3) {
+                ocount = re->top_backref * 3 + 3;
+                match_block.offset_vector =
+                        (int *)(pcre_malloc) (ocount * sizeof (int));
+                if (match_block.offset_vector == NULL)
+                        return PCRE_ERROR_NOMEMORY;
+                using_temporary_offsets = TRUE;
+ 
+        }
+        else
+                match_block.offset_vector = offsets;
+ 
+        match_block.offset_end = ocount;
+        match_block.offset_max = (2 * ocount) / 3;
+        match_block.offset_overflow = FALSE;
+ 
+        resetcount = 2 + re->top_bracket * 2;
+        if (resetcount > offsetcount)
+                resetcount = ocount;
+ 
+        if (match_block.offset_vector != NULL) {
+                register int *iptr = match_block.offset_vector + ocount;
+                register int *iend = iptr - resetcount / 2 + 1;
+                while (--iptr >= iend)
+                        *iptr = -1;
+        }
+ 
+        if (!anchored) {
+                if ((re->options & PCRE_FIRSTSET) != 0) {
+                        first_char = re->first_char;
+                        if ((ims & PCRE_CASELESS) != 0)
+                                first_char = match_block.lcc[first_char];
+                }
+                else if (!startline && extra != NULL &&
+                                 (extra->options & PCRE_STUDY_MAPPED) != 0)
+                        start_bits = extra->start_bits;
+        }
+ 
+        if ((re->options & PCRE_REQCHSET) != 0) {
+                req_char = re->req_char;
+                req_char2 = ((re->options & (PCRE_CASELESS | PCRE_ICHANGED)) != 0) ?
+                        (re->tables + fcc_offset)[req_char] : req_char;
+        }
+ 
+        do {
+                int rc;
+                register int *iptr = match_block.offset_vector;
+                register int *iend = iptr + resetcount;
+ 
+                while (iptr < iend)
+                        *iptr++ = -1;
+ 
+                if (first_char >= 0) {
+                        if ((ims & PCRE_CASELESS) != 0)
+                                while (start_match < end_subject &&
+                                           match_block.lcc[*start_match] != first_char)
+                                        start_match++;
+                        else
+                                while (start_match < end_subject
+                                           && *start_match != first_char)
+                                        start_match++;
+                }
+ 
+                else if (startline) {
+                        if (start_match > match_block.start_subject + start_offset) {
+                                while (start_match < end_subject && start_match[-1] != '\n')
+                                        start_match++;
+                        }
+                }
+ 
+                else if (start_bits != NULL) {
+                        while (start_match < end_subject) {
+                                register int c = *start_match;
+                                if ((start_bits[c / 8] & (1 << (c & 7))) == 0)
+                                        start_match++;
+                                else
+                                        break;
+                        }
+                }
+ 
+                if (req_char >= 0) {
+                        register const uschar *p =
+                                start_match + ((first_char >= 0) ? 1 : 0);
+ 
+                        if (p > req_char_ptr) {
+                                if (req_char == req_char2) {
+                                        while (p < end_subject) {
+                                                if (*p++ == req_char) {
+                                                        p--;
+                                                        break;
+                                                }
+                                        }
+                                }
+ 
+                                else {
+                                        while (p < end_subject) {
+                                                register int pp = *p++;
+                                                if (pp == req_char || pp == req_char2) {
+                                                        p--;
+                                                        break;
+                                                }
+                                        }
+                                }
+ 
+                                if (p >= end_subject)
+                                        break;
+ 
+                                req_char_ptr = p;
+                        }
+                }
+ 
+                match_block.start_match = start_match;
+                if (!match
+                        (start_match, re->code, 2, &match_block, ims, NULL,
+                         match_isgroup))
+                        continue;
+ 
+                if (using_temporary_offsets) {
+                        if (offsetcount >= 4) {
+                                memcpy(offsets + 2, match_block.offset_vector + 2,
+                                           (offsetcount - 2) * sizeof (int));
+ 
+                        }
+                        if (match_block.end_offset_top > offsetcount)
+                                match_block.offset_overflow = TRUE;
+ 
+                        (pcre_free) (match_block.offset_vector);
+                }
+ 
+                rc = match_block.offset_overflow ? 0 : match_block.end_offset_top / 2;
+ 
+                if (offsetcount < 2)
+                        rc = 0;
+                else {
+                        offsets[0] = start_match - match_block.start_subject;
+                        offsets[1] =
+                                match_block.end_match_ptr - match_block.start_subject;
+                }
+ 
+                return rc;
+        }
+ 
+        while (!anchored &&
+                   match_block.errorcode == PCRE_ERROR_NOMATCH &&
+                   start_match++ < end_subject);
+ 
+        if (using_temporary_offsets) {
+ 
+                (pcre_free) (match_block.offset_vector);
+        }
+ 
+        return match_block.errorcode;
+ }
+ 
+ static void
+ set_bit(uschar * start_bits, int c, BOOL caseless, compile_data * cd)
+ {
+        start_bits[c / 8] |= (1 << (c & 7));
+        if (caseless && (cd->ctypes[c] & ctype_letter) != 0)
+                start_bits[cd->fcc[c] / 8] |= (1 << (cd->fcc[c] & 7));
+ }
+ 
+ static BOOL
+ set_start_bits(const uschar * code, uschar * start_bits, BOOL caseless,
+                           compile_data * cd)
+ {
+        register int c;
+ 
+        volatile int dummy;
+ 
+        do {
+                const uschar *tcode = code + 3;
+                BOOL try_next = TRUE;
+ 
+                while (try_next) {
+                        if ((int)*tcode >= OP_BRA || *tcode == OP_ASSERT) {
+                                if (!set_start_bits(tcode, start_bits, caseless, cd))
+                                        return FALSE;
+                                try_next = FALSE;
+                        }
+ 
+                        else
+                                switch (*tcode) {
+                                        default:
+                                                return FALSE;
+ 
+                                        case OP_BRANUMBER:
+                                                tcode += 3;
+                                                break;
+ 
+                                        case OP_ASSERT_NOT:
+                                        case OP_ASSERTBACK:
+                                        case OP_ASSERTBACK_NOT:
+                                                do
+                                                        tcode += (tcode[1] << 8) + tcode[2];
+                                                while (*tcode == OP_ALT);
+                                                tcode += 3;
+                                                break;
+ 
+                                        case OP_OPT:
+                                                caseless = (tcode[1] & PCRE_CASELESS) != 0;
+                                                tcode += 2;
+                                                break;
+ 
+                                        case OP_BRAZERO:
+                                        case OP_BRAMINZERO:
+                                                if (!set_start_bits
+                                                        (++tcode, start_bits, caseless, cd))
+                                                        return FALSE;
+                                                dummy = 1;
+                                                do
+                                                        tcode += (tcode[1] << 8) + tcode[2];
+                                                while (*tcode == OP_ALT);
+                                                tcode += 3;
+                                                break;
+ 
+                                        case OP_STAR:
+                                        case OP_MINSTAR:
+                                        case OP_QUERY:
+                                        case OP_MINQUERY:
+                                                set_bit(start_bits, tcode[1], caseless, cd);
+                                                tcode += 2;
+                                                break;
+ 
+                                        case OP_UPTO:
+                                        case OP_MINUPTO:
+                                                set_bit(start_bits, tcode[3], caseless, cd);
+                                                tcode += 4;
+                                                break;
+ 
+                                        case OP_EXACT:
+                                                tcode++;
+ 
+                                        case OP_CHARS:
+                                                tcode++;
+ 
+                                        case OP_PLUS:
+                                        case OP_MINPLUS:
+                                                set_bit(start_bits, tcode[1], caseless, cd);
+                                                try_next = FALSE;
+                                                break;
+ 
+                                        case OP_NOT_DIGIT:
+                                                for (c = 0; c < 32; c++)
+                                                        start_bits[c] |= ~cd->cbits[c + cbit_digit];
+                                                try_next = FALSE;
+                                                break;
+ 
+                                        case OP_DIGIT:
+                                                for (c = 0; c < 32; c++)
+                                                        start_bits[c] |= cd->cbits[c + cbit_digit];
+                                                try_next = FALSE;
+                                                break;
+ 
+                                        case OP_NOT_WHITESPACE:
+                                                for (c = 0; c < 32; c++)
+                                                        start_bits[c] |= ~cd->cbits[c + cbit_space];
+                                                try_next = FALSE;
+                                                break;
+ 
+                                        case OP_WHITESPACE:
+                                                for (c = 0; c < 32; c++)
+                                                        start_bits[c] |= cd->cbits[c + cbit_space];
+                                                try_next = FALSE;
+                                                break;
+ 
+                                        case OP_NOT_WORDCHAR:
+                                                for (c = 0; c < 32; c++)
+                                                        start_bits[c] |= ~cd->cbits[c + cbit_word];
+                                                try_next = FALSE;
+                                                break;
+ 
+                                        case OP_WORDCHAR:
+                                                for (c = 0; c < 32; c++)
+                                                        start_bits[c] |= cd->cbits[c + cbit_word];
+                                                try_next = FALSE;
+                                                break;
+ 
+                                        case OP_TYPEPLUS:
+                                        case OP_TYPEMINPLUS:
+                                                tcode++;
+                                                break;
+ 
+                                        case OP_TYPEEXACT:
+                                                tcode += 3;
+                                                break;
+ 
+                                        case OP_TYPEUPTO:
+                                        case OP_TYPEMINUPTO:
+                                                tcode += 2;
+ 
+                                        case OP_TYPESTAR:
+                                        case OP_TYPEMINSTAR:
+                                        case OP_TYPEQUERY:
+                                        case OP_TYPEMINQUERY:
+                                                switch (tcode[1]) {
+                                                        case OP_NOT_DIGIT:
+                                                                for (c = 0; c < 32; c++)
+                                                                        start_bits[c] |=
+                                                                                ~cd->cbits[c + cbit_digit];
+                                                                break;
+ 
+                                                        case OP_DIGIT:
+                                                                for (c = 0; c < 32; c++)
+                                                                        start_bits[c] |=
+                                                                                cd->cbits[c + cbit_digit];
+                                                                break;
+ 
+                                                        case OP_NOT_WHITESPACE:
+                                                                for (c = 0; c < 32; c++)
+                                                                        start_bits[c] |=
+                                                                                ~cd->cbits[c + cbit_space];
+                                                                break;
+ 
+                                                        case OP_WHITESPACE:
+                                                                for (c = 0; c < 32; c++)
+                                                                        start_bits[c] |=
+                                                                                cd->cbits[c + cbit_space];
+                                                                break;
+ 
+                                                        case OP_NOT_WORDCHAR:
+                                                                for (c = 0; c < 32; c++)
+                                                                        start_bits[c] |=
+                                                                                ~cd->cbits[c + cbit_word];
+                                                                break;
+ 
+                                                        case OP_WORDCHAR:
+                                                                for (c = 0; c < 32; c++)
+                                                                        start_bits[c] |= cd->cbits[c + cbit_word];
+                                                                break;
+                                                }
+ 
+                                                tcode += 2;
+                                                break;
+ 
+                                        case OP_CLASS:
+                                                {
+                                                        tcode++;
+                                                        for (c = 0; c < 32; c++)
+                                                                start_bits[c] |= tcode[c];
+                                                        tcode += 32;
+                                                        switch (*tcode) {
+                                                                case OP_CRSTAR:
+                                                                case OP_CRMINSTAR:
+                                                                case OP_CRQUERY:
+                                                                case OP_CRMINQUERY:
+                                                                        tcode++;
+                                                                        break;
+ 
+                                                                case OP_CRRANGE:
+                                                                case OP_CRMINRANGE:
+                                                                        if (((tcode[1] << 8) + tcode[2]) == 0)
+                                                                                tcode += 5;
+                                                                        else
+                                                                                try_next = FALSE;
+                                                                        break;
+ 
+                                                                default:
+                                                                        try_next = FALSE;
+                                                                        break;
+                                                        }
+                                                }
+                                                break;
+ 
+                                }
+                }
+ 
+                code += (code[1] << 8) + code[2];
+        }
+        while (*code == OP_ALT);
+        return TRUE;
+ }
+ 
+ pcre_extra *pcre_study(const pcre * external_re, int options,
+                                           const char **errorptr)
+ {
+        uschar start_bits[32];
+        pcre_extra_st *extra;
+        const pcre_st *re = (const pcre_st *)external_re;
+        compile_data compile_block;
+ 
+        *errorptr = NULL;
+ 
+        if (re == NULL || re->magic_number != MAGIC_NUMBER) {
+                *errorptr = "argument is not a compiled regular expression";
+                return NULL;
+        }
+ 
+        if ((options & ~PUBLIC_STUDY_OPTIONS) != 0) {
+                *errorptr = "unknown or incorrect option bit(s) set";
+                return NULL;
+        }
+ 
+        if ((re->options & (PCRE_ANCHORED | PCRE_FIRSTSET | PCRE_STARTLINE)) != 0)
+                return NULL;
+ 
+        compile_block.lcc = re->tables + lcc_offset;
+        compile_block.fcc = re->tables + fcc_offset;
+        compile_block.cbits = re->tables + cbits_offset;
+        compile_block.ctypes = re->tables + ctypes_offset;
+ 
+        memset(start_bits, 0, 32 * sizeof (uschar));
+        if (!set_start_bits
+                (re->code, start_bits, (re->options & PCRE_CASELESS) != 0,
+                 &compile_block))
+                return NULL;
+ 
+        extra = (pcre_extra_st *) (pcre_malloc) (sizeof (pcre_extra_st));
+ 
+        if (extra == NULL) {
+                *errorptr = "failed to get memory";
+                return NULL;
+        }
+ 
+        extra->options = PCRE_STUDY_MAPPED;
+        memcpy(extra->start_bits, start_bits, sizeof (start_bits));
+ 
+        return (pcre_extra *) extra;
+ }
+ 
+ int
+ pcre_copy_substring(const char *subject, int *ovector, int stringcount,
+                                        int stringnumber, char *buffer, int size)
+ {
+        int yield;
+        if (stringnumber < 0 || stringnumber >= stringcount)
+                return PCRE_ERROR_NOSUBSTRING;
+        stringnumber *= 2;
+        yield = ovector[stringnumber + 1] - ovector[stringnumber];
+        if (size < yield + 1)
+                return PCRE_ERROR_NOMEMORY;
+        memcpy(buffer, subject + ovector[stringnumber], yield);
+        buffer[yield] = 0;
+        return yield;
+ }
+ 
+ int
+ pcre_get_substring_list(const char *subject, int *ovector, int stringcount,
+                                                const char ***listptr)
+ {
+        int i;
+        int size = sizeof (char *);
+        int double_count = stringcount * 2;
+        char **stringlist;
+        char *p;
+ 
+        for (i = 0; i < double_count; i += 2)
+                size += sizeof (char *) + ovector[i + 1] - ovector[i] + 1;
+ 
+        stringlist = (char **)(pcre_malloc) (size);
+        if (stringlist == NULL)
+                return PCRE_ERROR_NOMEMORY;
+ 
+        *listptr = (const char **)stringlist;
+        p = (char *)(stringlist + stringcount + 1);
+ 
+        for (i = 0; i < double_count; i += 2) {
+                int len = ovector[i + 1] - ovector[i];
+                memcpy(p, subject + ovector[i], len);
+                *stringlist++ = p;
+                p += len;
+                *p++ = 0;
+        }
+ 
+        *stringlist = NULL;
+        return 0;
+ }
+ 
+ void pcre_free_substring_list(const char **pointer)
+ {
+        (pcre_free) ((void *)pointer);
+ }
+ 
+ int
+ pcre_get_substring(const char *subject, int *ovector, int stringcount,
+                                   int stringnumber, const char **stringptr)
+ {
+        int yield;
+        char *substring;
+        if (stringnumber < 0 || stringnumber >= stringcount)
+                return PCRE_ERROR_NOSUBSTRING;
+        stringnumber *= 2;
+        yield = ovector[stringnumber + 1] - ovector[stringnumber];
+        substring = (char *)(pcre_malloc) (yield + 1);
+        if (substring == NULL)
+                return PCRE_ERROR_NOMEMORY;
+        memcpy(substring, subject + ovector[stringnumber], yield);
+        substring[yield] = 0;
+        *stringptr = substring;
+        return yield;
+ }
+ 
+ void pcre_free_substring(const char *pointer)
+ {
+        (pcre_free) ((void *)pointer);
+ }
+ 
+ #endif
+ 
+ const unsigned char *pcre_maketables(void)
+ {
+        unsigned char *yield, *p;
+        int i;
+ 
+ #ifndef RC_PCRE_TAB
+        yield = (unsigned char *)(pcre_malloc) (tables_length);
+ #else
+        yield = (unsigned char *)malloc(tables_length);
+ #endif
+ 
+        if (yield == NULL)
+                return NULL;
+        p = yield;
+ 
+        for (i = 0; i < 256; i++)
+                *p++ = tolower(i);
+ 
+        for (i = 0; i < 256; i++)
+                *p++ = islower(i) ? toupper(i) : tolower(i);
+ 
+        memset(p, 0, cbit_length);
+        for (i = 0; i < 256; i++) {
+                if (isdigit(i)) {
+                        p[cbit_digit + i / 8] |= 1 << (i & 7);
+                        p[cbit_word + i / 8] |= 1 << (i & 7);
+                }
+                if (isupper(i)) {
+                        p[cbit_upper + i / 8] |= 1 << (i & 7);
+                        p[cbit_word + i / 8] |= 1 << (i & 7);
+                }
+                if (islower(i)) {
+                        p[cbit_lower + i / 8] |= 1 << (i & 7);
+                        p[cbit_word + i / 8] |= 1 << (i & 7);
+                }
+                if (i == '_')
+                        p[cbit_word + i / 8] |= 1 << (i & 7);
+                if (isspace(i))
+                        p[cbit_space + i / 8] |= 1 << (i & 7);
+                if (isxdigit(i))
+                        p[cbit_xdigit + i / 8] |= 1 << (i & 7);
+                if (isgraph(i))
+                        p[cbit_graph + i / 8] |= 1 << (i & 7);
+                if (isprint(i))
+                        p[cbit_print + i / 8] |= 1 << (i & 7);
+                if (ispunct(i))
+                        p[cbit_punct + i / 8] |= 1 << (i & 7);
+                if (iscntrl(i))
+                        p[cbit_cntrl + i / 8] |= 1 << (i & 7);
+        }
+        p += cbit_length;
+ 
+        for (i = 0; i < 256; i++) {
+                int x = 0;
+                if (isspace(i))
+                        x += ctype_space;
+                if (isalpha(i))
+                        x += ctype_letter;
+                if (isdigit(i))
+                        x += ctype_digit;
+                if (isxdigit(i))
+                        x += ctype_xdigit;
+                if (isalnum(i) || i == '_')
+                        x += ctype_word;
+                if (strchr("*+?{^.$|()[", i) != 0)
+                        x += ctype_meta;
+                *p++ = x;
+        }
+ 
+        return yield;
+ }
+ 
+ #ifdef RC_PCRE_TAB
+ 
+ #include <ctype.h>
+ #include <stdio.h>
+ #include <string.h>
+ 
+ int main(void)
+ {
+        int i;
+        const unsigned char *tables = pcre_maketables();
+ 
+        printf("/*************************************************\n"
+                   "*      Perl-Compatible Regular Expressions       *\n"
+                   "*************************************************/\n\n"
+                   "static unsigned char pcre_default_tables[] = {\n\n"
+                   "/* This table is a lower casing table. */\n\n");
+ 
+        printf("  ");
+        for (i = 0; i < 256; i++) {
+                if ((i & 7) == 0 && i != 0)
+                        printf("\n  ");
+                printf("%3d", *tables++);
+                if (i != 255)
+                        printf(",");
+        }
+        printf(",\n\n");
+ 
+        printf("/* This table is a case flipping table. */\n\n");
+ 
+        printf("  ");
+        for (i = 0; i < 256; i++) {
+                if ((i & 7) == 0 && i != 0)
+                        printf("\n  ");
+                printf("%3d", *tables++);
+                if (i != 255)
+                        printf(",");
+        }
+        printf(",\n\n");
+ 
+        printf("/* This table contains bit maps for various character classes.\n"
+                   "Each map is 32 bytes long and the bits run from the least\n"
+                   "significant end of each byte. The classes that have their own\n"
+                   "maps are: space, xdigit, digit, upper, lower, word, graph\n"
+                   "print, punct, and cntrl. Other classes are built from combinations. */\n\n");
+ 
+        printf("  ");
+        for (i = 0; i < cbit_length; i++) {
+                if ((i & 7) == 0 && i != 0) {
+                        if ((i & 31) == 0)
+                                printf("\n");
+                        printf("\n  ");
+                }
+                printf("0x%02x", *tables++);
+                if (i != cbit_length - 1)
+                        printf(",");
+        }
+        printf(",\n\n");
+ 
+        printf
+                ("/* This table identifies various classes of character by individual bits:\n"
+                 "  0x%02x   white space character\n" "  0x%02x   letter\n"
+                 "  0x%02x   decimal digit\n" "  0x%02x   hexadecimal digit\n"
+                 "  0x%02x   alphanumeric or '_'\n"
+                 "  0x%02x   regular expression metacharacter or binary zero\n*/\n\n",
+                 ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
+                 ctype_meta);
+ 
+        printf("  ");
+        for (i = 0; i < 256; i++) {
+                if ((i & 7) == 0 && i != 0) {
+                        printf(" \n  ");
+                }
+                printf("0x%02x", *tables++);
+                if (i != 255)
+                        printf(",");
+        }
+ 
+        printf("};\n\n\n");
+ 
+        return 0;
+ }
+ 
+ #endif


ossp-pkg/rc/rc_pcre.h -> 1.1

*** /dev/null    Sat Nov 23 01:55:41 2024
--- -    Sat Nov 23 01:58:43 2024
***************
*** 0 ****
--- 1,141 ----
+ /*
+  *  Perl Compatible Regular Expression (PCRE) Library
+  *  Copyright (c) 1997-2001 Philip Hazel <ph10@cam.ac.uk>
+  *  Copyright (c) 1997-2001 University of Cambridge
+  *
+  *  DO NOT EDIT THIS FILE, IT WAS AUTOMATICALLY GENERATED!
+  *
+  *  This is an automatically generated, extremely stripped down
+  *  version of the PCRE 3.9 library from the Philip Hazel.
+  *  This version is still distributed under the same original PCRE
+  *  Open Source license, but Philip Hazel is no longer responsible
+  *  for this version.
+  */
+ 
+ /*
+ This is a library of functions to support regular expressions whose syntax
+ and semantics are as close as possible to those of the Perl 5 language. See
+ the file Tech.Notes for some information on the internals.
+ 
+ Written by: Philip Hazel <ph10@cam.ac.uk>
+ 
+            Copyright (c) 1997-2001 University of Cambridge
+ 
+ -----------------------------------------------------------------------------
+ Permission is granted to anyone to use this software for any purpose on any
+ computer system, and to redistribute it freely, subject to the following
+ restrictions:
+ 
+ 1. This software is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ 
+ 2. The origin of this software must not be misrepresented, either by
+    explicit claim or by omission.
+ 
+ 3. Altered versions must be plainly marked as such, and must not be
+    misrepresented as being the original software.
+ 
+ 4. If PCRE is embedded in any software that is released under the GNU
+    General Purpose Licence (GPL), then the terms of that licence shall
+    supersede any condition above with which it is incompatible.
+ -----------------------------------------------------------------------------
+ */
+ 
+ #ifndef __RC_PCRE_H__
+ #define __RC_PCRE_H__
+ 
+ #define PCRE_PREFIX RC_
+ 
+ #define PCRE_MAJOR          3
+ #define PCRE_MINOR          9
+ #define PCRE_DATE           02-Jan-2002
+ 
+ #ifdef PCRE_PREFIX
+ #if defined(__STDC__) || defined(__cplusplus)
+ #define __PCRE_CONCAT(x,y) x ## y
+ #define PCRE_CONCAT(x,y) __PCRE_CONCAT(x,y)
+ #else
+ #define __PCRE_CONCAT(x) x
+ #define PCRE_CONCAT(x,y) __PCRE_CONCAT(x)y
+ #endif
+ #define pcre_malloc PCRE_CONCAT(PCRE_PREFIX,pcre_malloc)
+ #define pcre_free PCRE_CONCAT(PCRE_PREFIX,pcre_free)
+ #define pcre_compile PCRE_CONCAT(PCRE_PREFIX,pcre_compile)
+ #define pcre_copy_substring PCRE_CONCAT(PCRE_PREFIX,pcre_copy_substring)
+ #define pcre_exec PCRE_CONCAT(PCRE_PREFIX,pcre_exec)
+ #define pcre_free_substring PCRE_CONCAT(PCRE_PREFIX,pcre_free_substring)
+ #define pcre_free_substring_list PCRE_CONCAT(PCRE_PREFIX,pcre_free_substring_list)
+ #define pcre_get_substring PCRE_CONCAT(PCRE_PREFIX,pcre_get_substring)
+ #define pcre_get_substring_list PCRE_CONCAT(PCRE_PREFIX,pcre_get_substring_list)
+ #define pcre_info PCRE_CONCAT(PCRE_PREFIX,pcre_info)
+ #define pcre_fullinfo PCRE_CONCAT(PCRE_PREFIX,pcre_fullinfo)
+ #define pcre_maketables PCRE_CONCAT(PCRE_PREFIX,pcre_maketables)
+ #define pcre_study PCRE_CONCAT(PCRE_PREFIX,pcre_study)
+ #define pcre_version PCRE_CONCAT(PCRE_PREFIX,pcre_version)
+ #endif
+ 
+ #include <stdlib.h>
+ 
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
+ 
+ #define PCRE_CASELESS        0x0001
+ #define PCRE_MULTILINE       0x0002
+ #define PCRE_DOTALL          0x0004
+ #define PCRE_EXTENDED        0x0008
+ #define PCRE_ANCHORED        0x0010
+ #define PCRE_DOLLAR_ENDONLY  0x0020
+ #define PCRE_EXTRA           0x0040
+ #define PCRE_NOTBOL          0x0080
+ #define PCRE_NOTEOL          0x0100
+ #define PCRE_UNGREEDY        0x0200
+ #define PCRE_NOTEMPTY        0x0400
+ #define PCRE_UTF8            0x0800
+ 
+ #define PCRE_ERROR_NOMATCH        (-1)
+ #define PCRE_ERROR_NULL           (-2)
+ #define PCRE_ERROR_BADOPTION      (-3)
+ #define PCRE_ERROR_BADMAGIC       (-4)
+ #define PCRE_ERROR_UNKNOWN_NODE   (-5)
+ #define PCRE_ERROR_NOMEMORY       (-6)
+ #define PCRE_ERROR_NOSUBSTRING    (-7)
+ 
+ #define PCRE_INFO_OPTIONS         0
+ #define PCRE_INFO_SIZE            1
+ #define PCRE_INFO_CAPTURECOUNT    2
+ #define PCRE_INFO_BACKREFMAX      3
+ #define PCRE_INFO_FIRSTCHAR       4
+ #define PCRE_INFO_FIRSTTABLE      5
+ #define PCRE_INFO_LASTLITERAL     6
+ 
+ struct pcre_st;
+ struct pcre_extra_st;
+ 
+ typedef struct pcre_st pcre;
+ typedef struct pcre_extra_st pcre_extra;
+ 
+ extern void *(*pcre_malloc)(size_t);
+ extern void  (*pcre_free)(void *);
+ 
+ extern pcre *pcre_compile(const char *, int, const char **, int *,
+               const unsigned char *);
+ extern int  pcre_copy_substring(const char *, int *, int, int, char *, int);
+ extern int  pcre_exec(const pcre *, const pcre_extra *, const char *,
+               int, int, int, int *, int);
+ extern void pcre_free_substring(const char *);
+ extern void pcre_free_substring_list(const char **);
+ extern int  pcre_get_substring(const char *, int *, int, int, const char **);
+ extern int  pcre_get_substring_list(const char *, int *, int, const char ***);
+ extern int  pcre_info(const pcre *, int *, int *);
+ extern int  pcre_fullinfo(const pcre *, const pcre_extra *, int, void *);
+ extern const unsigned char *pcre_maketables(void);
+ extern pcre_extra *pcre_study(const pcre *, int, const char **);
+ extern const char *pcre_version(void);
+ 
+ #ifdef __cplusplus
+ }
+ #endif
+ 
+ #endif

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