/[pcre]/code/trunk/pcreposix.c
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revision 73 by nigel, Sat Feb 24 21:40:30 2007 UTC revision 654 by ph10, Tue Aug 2 11:00:40 2011 UTC
# Line 2  Line 2 
2  *      Perl-Compatible Regular Expressions       *  *      Perl-Compatible Regular Expressions       *
3  *************************************************/  *************************************************/
4    
5  /*  /* PCRE is a library of functions to support regular expressions whose syntax
6  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.
 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.  
7    
8  This module is a wrapper that provides a POSIX API to the underlying PCRE                         Written by Philip Hazel
9  functions.             Copyright (c) 1997-2010 University of Cambridge
10    
11  Written by: Philip Hazel <ph10@cam.ac.uk>  -----------------------------------------------------------------------------
12    Redistribution and use in source and binary forms, with or without
13    modification, are permitted provided that the following conditions are met:
14    
15             Copyright (c) 1997-2003 University of Cambridge      * Redistributions of source code must retain the above copyright notice,
16          this list of conditions and the following disclaimer.
17    
18  -----------------------------------------------------------------------------      * Redistributions in binary form must reproduce the above copyright
19  Permission is granted to anyone to use this software for any purpose on any        notice, this list of conditions and the following disclaimer in the
20  computer system, and to redistribute it freely, subject to the following        documentation and/or other materials provided with the distribution.
21  restrictions:  
22        * Neither the name of the University of Cambridge nor the names of its
23  1. This software is distributed in the hope that it will be useful,        contributors may be used to endorse or promote products derived from
24     but WITHOUT ANY WARRANTY; without even the implied warranty of        this software without specific prior written permission.
25     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
26    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
27  2. The origin of this software must not be misrepresented, either by  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28     explicit claim or by omission.  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
30  3. Altered versions must be plainly marked as such, and must not be  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31     misrepresented as being the original software.  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33  4. If PCRE is embedded in any software that is released under the GNU  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34     General Purpose Licence (GPL), then the terms of that licence shall  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35     supersede any condition above with which it is incompatible.  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36    POSSIBILITY OF SUCH DAMAGE.
37  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
38  */  */
39    
40  #include "internal.h"  
41  #include "pcreposix.h"  /* This module is a wrapper that provides a POSIX API to the underlying PCRE
42  #include "stdlib.h"  functions. */
43    
44    
45    #ifdef HAVE_CONFIG_H
46    #include "config.h"
47    #endif
48    
 /* Corresponding tables of PCRE error messages and POSIX error codes. */  
49    
50  static const char *const estring[] = {  /* Ensure that the PCREPOSIX_EXP_xxx macros are set appropriately for
51    ERR1,  ERR2,  ERR3,  ERR4,  ERR5,  ERR6,  ERR7,  ERR8,  ERR9,  ERR10,  compiling these functions. This must come before including pcreposix.h, where
52    ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19, ERR20,  they are set for an application (using these functions) if they have not
53    ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR29, ERR29, ERR30,  previously been set. */
54    ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39, ERR40,  
55    ERR41, ERR42, ERR43, ERR44 };  #if defined(_WIN32) && !defined(PCRE_STATIC)
56    #  define PCREPOSIX_EXP_DECL extern __declspec(dllexport)
57    #  define PCREPOSIX_EXP_DEFN __declspec(dllexport)
58    #endif
59    
60    /* We include pcre.h before pcre_internal.h so that the PCRE library functions
61    are declared as "import" for Windows by defining PCRE_EXP_DECL as "import".
62    This is needed even though pcre_internal.h itself includes pcre.h, because it
63    does so after it has set PCRE_EXP_DECL to "export" if it is not already set. */
64    
65    #include "pcre.h"
66    #include "pcre_internal.h"
67    #include "pcreposix.h"
68    
69    
70    /* Table to translate PCRE compile time error codes into POSIX error codes. */
71    
72  static const int eint[] = {  static const int eint[] = {
73    REG_EESCAPE, /* "\\ at end of pattern" */    0,           /* no error */
74    REG_EESCAPE, /* "\\c at end of pattern" */    REG_EESCAPE, /* \ at end of pattern */
75    REG_EESCAPE, /* "unrecognized character follows \\" */    REG_EESCAPE, /* \c at end of pattern */
76    REG_BADBR,   /* "numbers out of order in {} quantifier" */    REG_EESCAPE, /* unrecognized character follows \ */
77    REG_BADBR,   /* "number too big in {} quantifier" */    REG_BADBR,   /* numbers out of order in {} quantifier */
78    REG_EBRACK,  /* "missing terminating ] for character class" */    /* 5 */
79    REG_ECTYPE,  /* "invalid escape sequence in character class" */    REG_BADBR,   /* number too big in {} quantifier */
80    REG_ERANGE,  /* "range out of order in character class" */    REG_EBRACK,  /* missing terminating ] for character class */
81    REG_BADRPT,  /* "nothing to repeat" */    REG_ECTYPE,  /* invalid escape sequence in character class */
82    REG_BADRPT,  /* "operand of unlimited repeat could match the empty string" */    REG_ERANGE,  /* range out of order in character class */
83    REG_ASSERT,  /* "internal error: unexpected repeat" */    REG_BADRPT,  /* nothing to repeat */
84    REG_BADPAT,  /* "unrecognized character after (?" */    /* 10 */
85    REG_BADPAT,  /* "POSIX named classes are supported only within a class" */    REG_BADRPT,  /* operand of unlimited repeat could match the empty string */
86    REG_EPAREN,  /* "missing )" */    REG_ASSERT,  /* internal error: unexpected repeat */
87    REG_ESUBREG, /* "reference to non-existent subpattern" */    REG_BADPAT,  /* unrecognized character after (? */
88    REG_INVARG,  /* "erroffset passed as NULL" */    REG_BADPAT,  /* POSIX named classes are supported only within a class */
89    REG_INVARG,  /* "unknown option bit(s) set" */    REG_EPAREN,  /* missing ) */
90    REG_EPAREN,  /* "missing ) after comment" */    /* 15 */
91    REG_ESIZE,   /* "parentheses nested too deeply" */    REG_ESUBREG, /* reference to non-existent subpattern */
92    REG_ESIZE,   /* "regular expression too large" */    REG_INVARG,  /* erroffset passed as NULL */
93    REG_ESPACE,  /* "failed to get memory" */    REG_INVARG,  /* unknown option bit(s) set */
94    REG_EPAREN,  /* "unmatched brackets" */    REG_EPAREN,  /* missing ) after comment */
95    REG_ASSERT,  /* "internal error: code overflow" */    REG_ESIZE,   /* parentheses nested too deeply */
96    REG_BADPAT,  /* "unrecognized character after (?<" */    /* 20 */
97    REG_BADPAT,  /* "lookbehind assertion is not fixed length" */    REG_ESIZE,   /* regular expression too large */
98    REG_BADPAT,  /* "malformed number after (?(" */    REG_ESPACE,  /* failed to get memory */
99    REG_BADPAT,  /* "conditional group containe more than two branches" */    REG_EPAREN,  /* unmatched parentheses */
100    REG_BADPAT,  /* "assertion expected after (?(" */    REG_ASSERT,  /* internal error: code overflow */
101    REG_BADPAT,  /* "(?R or (?digits must be followed by )" */    REG_BADPAT,  /* unrecognized character after (?< */
102    REG_ECTYPE,  /* "unknown POSIX class name" */    /* 25 */
103    REG_BADPAT,  /* "POSIX collating elements are not supported" */    REG_BADPAT,  /* lookbehind assertion is not fixed length */
104    REG_INVARG,  /* "this version of PCRE is not compiled with PCRE_UTF8 support" */    REG_BADPAT,  /* malformed number or name after (?( */
105    REG_BADPAT,  /* "spare error" */    REG_BADPAT,  /* conditional group contains more than two branches */
106    REG_BADPAT,  /* "character value in \x{...} sequence is too large" */    REG_BADPAT,  /* assertion expected after (?( */
107    REG_BADPAT,  /* "invalid condition (?(0)" */    REG_BADPAT,  /* (?R or (?[+-]digits must be followed by ) */
108    REG_BADPAT,  /* "\\C not allowed in lookbehind assertion" */    /* 30 */
109    REG_EESCAPE, /* "PCRE does not support \\L, \\l, \\N, \\P, \\p, \\U, \\u, or \\X" */    REG_ECTYPE,  /* unknown POSIX class name */
110    REG_BADPAT,  /* "number after (?C is > 255" */    REG_BADPAT,  /* POSIX collating elements are not supported */
111    REG_BADPAT,  /* "closing ) for (?C expected" */    REG_INVARG,  /* this version of PCRE is not compiled with PCRE_UTF8 support */
112    REG_BADPAT,  /* "recursive call could loop indefinitely" */    REG_BADPAT,  /* spare error */
113    REG_BADPAT,  /* "unrecognized character after (?P" */    REG_BADPAT,  /* character value in \x{...} sequence is too large */
114    REG_BADPAT,  /* "syntax error after (?P" */    /* 35 */
115    REG_BADPAT,  /* "two named groups have the same name" */    REG_BADPAT,  /* invalid condition (?(0) */
116    REG_BADPAT   /* "invalid UTF-8 string" */    REG_BADPAT,  /* \C not allowed in lookbehind assertion */
117      REG_EESCAPE, /* PCRE does not support \L, \l, \N, \U, or \u */
118      REG_BADPAT,  /* number after (?C is > 255 */
119      REG_BADPAT,  /* closing ) for (?C expected */
120      /* 40 */
121      REG_BADPAT,  /* recursive call could loop indefinitely */
122      REG_BADPAT,  /* unrecognized character after (?P */
123      REG_BADPAT,  /* syntax error in subpattern name (missing terminator) */
124      REG_BADPAT,  /* two named subpatterns have the same name */
125      REG_BADPAT,  /* invalid UTF-8 string */
126      /* 45 */
127      REG_BADPAT,  /* support for \P, \p, and \X has not been compiled */
128      REG_BADPAT,  /* malformed \P or \p sequence */
129      REG_BADPAT,  /* unknown property name after \P or \p */
130      REG_BADPAT,  /* subpattern name is too long (maximum 32 characters) */
131      REG_BADPAT,  /* too many named subpatterns (maximum 10,000) */
132      /* 50 */
133      REG_BADPAT,  /* repeated subpattern is too long */
134      REG_BADPAT,  /* octal value is greater than \377 (not in UTF-8 mode) */
135      REG_BADPAT,  /* internal error: overran compiling workspace */
136      REG_BADPAT,  /* internal error: previously-checked referenced subpattern not found */
137      REG_BADPAT,  /* DEFINE group contains more than one branch */
138      /* 55 */
139      REG_BADPAT,  /* repeating a DEFINE group is not allowed */
140      REG_INVARG,  /* inconsistent NEWLINE options */
141      REG_BADPAT,  /* \g is not followed followed by an (optionally braced) non-zero number */
142      REG_BADPAT,  /* a numbered reference must not be zero */
143      REG_BADPAT,  /* an argument is not allowed for (*ACCEPT), (*FAIL), or (*COMMIT) */
144      /* 60 */
145      REG_BADPAT,  /* (*VERB) not recognized */
146      REG_BADPAT,  /* number is too big */
147      REG_BADPAT,  /* subpattern name expected */
148      REG_BADPAT,  /* digit expected after (?+ */
149      REG_BADPAT,  /* ] is an invalid data character in JavaScript compatibility mode */
150      /* 65 */
151      REG_BADPAT,  /* different names for subpatterns of the same number are not allowed */
152      REG_BADPAT,  /* (*MARK) must have an argument */
153      REG_INVARG,  /* this version of PCRE is not compiled with PCRE_UCP support */
154      REG_BADPAT,  /* \c must be followed by an ASCII character */
155      REG_BADPAT,  /* \k is not followed by a braced, angle-bracketed, or quoted name */
156  };  };
157    
158  /* Table of texts corresponding to POSIX error codes */  /* Table of texts corresponding to POSIX error codes */
# Line 124  static const char *const pstring[] = { Line 182  static const char *const pstring[] = {
182    
183    
184  /*************************************************  /*************************************************
 *          Translate PCRE text code to int       *  
 *************************************************/  
   
 /* PCRE compile-time errors are given as strings defined as macros. We can just  
 look them up in a table to turn them into POSIX-style error codes. */  
   
 static int  
 pcre_posix_error_code(const char *s)  
 {  
 size_t i;  
 for (i = 0; i < sizeof(estring)/sizeof(char *); i++)  
   if (strcmp(s, estring[i]) == 0) return eint[i];  
 return REG_ASSERT;  
 }  
   
   
   
 /*************************************************  
185  *          Translate error code to string        *  *          Translate error code to string        *
186  *************************************************/  *************************************************/
187    
188  EXPORT size_t  PCREPOSIX_EXP_DEFN size_t PCRE_CALL_CONVENTION
189  regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)  regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)
190  {  {
191  const char *message, *addmessage;  const char *message, *addmessage;
# Line 180  return length + addlength; Line 220  return length + addlength;
220  *           Free store held by a regex           *  *           Free store held by a regex           *
221  *************************************************/  *************************************************/
222    
223  EXPORT void  PCREPOSIX_EXP_DEFN void PCRE_CALL_CONVENTION
224  regfree(regex_t *preg)  regfree(regex_t *preg)
225  {  {
226  (pcre_free)(preg->re_pcre);  (pcre_free)(preg->re_pcre);
# Line 203  Returns:      0 on success Line 243  Returns:      0 on success
243                various non-zero codes on failure                various non-zero codes on failure
244  */  */
245    
246  EXPORT int  PCREPOSIX_EXP_DEFN int PCRE_CALL_CONVENTION
247  regcomp(regex_t *preg, const char *pattern, int cflags)  regcomp(regex_t *preg, const char *pattern, int cflags)
248  {  {
249  const char *errorptr;  const char *errorptr;
250  int erroffset;  int erroffset;
251    int errorcode;
252  int options = 0;  int options = 0;
253    
254  if ((cflags & REG_ICASE) != 0) options |= PCRE_CASELESS;  if ((cflags & REG_ICASE) != 0)    options |= PCRE_CASELESS;
255  if ((cflags & REG_NEWLINE) != 0) options |= PCRE_MULTILINE;  if ((cflags & REG_NEWLINE) != 0)  options |= PCRE_MULTILINE;
256    if ((cflags & REG_DOTALL) != 0)   options |= PCRE_DOTALL;
257    if ((cflags & REG_NOSUB) != 0)    options |= PCRE_NO_AUTO_CAPTURE;
258    if ((cflags & REG_UTF8) != 0)     options |= PCRE_UTF8;
259    if ((cflags & REG_UCP) != 0)      options |= PCRE_UCP;
260    if ((cflags & REG_UNGREEDY) != 0) options |= PCRE_UNGREEDY;
261    
262  preg->re_pcre = pcre_compile(pattern, options, &errorptr, &erroffset, NULL);  preg->re_pcre = pcre_compile2(pattern, options, &errorcode, &errorptr,
263      &erroffset, NULL);
264  preg->re_erroffset = erroffset;  preg->re_erroffset = erroffset;
265    
266  if (preg->re_pcre == NULL) return pcre_posix_error_code(errorptr);  /* Safety: if the error code is too big for the translation vector (which
267    should not happen, but we all make mistakes), return REG_BADPAT. */
268    
269    if (preg->re_pcre == NULL)
270      {
271      return (errorcode < sizeof(eint)/sizeof(const int))?
272        eint[errorcode] : REG_BADPAT;
273      }
274    
275  preg->re_nsub = pcre_info((const pcre *)preg->re_pcre, NULL, NULL);  preg->re_nsub = pcre_info((const pcre *)preg->re_pcre, NULL, NULL);
276  return 0;  return 0;
# Line 234  substring, so we have to get and release Line 288  substring, so we have to get and release
288  the POSIX structures as was done in earlier releases when PCRE needed only 2  the POSIX structures as was done in earlier releases when PCRE needed only 2
289  ints. However, if the number of possible capturing brackets is small, use a  ints. However, if the number of possible capturing brackets is small, use a
290  block of store on the stack, to reduce the use of malloc/free. The threshold is  block of store on the stack, to reduce the use of malloc/free. The threshold is
291  in a macro that can be changed at configure time. */  in a macro that can be changed at configure time.
292    
293    If REG_NOSUB was specified at compile time, the PCRE_NO_AUTO_CAPTURE flag will
294    be set. When this is the case, the nmatch and pmatch arguments are ignored, and
295    the only result is yes/no/error. */
296    
297  EXPORT int  PCREPOSIX_EXP_DEFN int PCRE_CALL_CONVENTION
298  regexec(const regex_t *preg, const char *string, size_t nmatch,  regexec(const regex_t *preg, const char *string, size_t nmatch,
299    regmatch_t pmatch[], int eflags)    regmatch_t pmatch[], int eflags)
300  {  {
301  int rc;  int rc, so, eo;
302  int options = 0;  int options = 0;
303  int *ovector = NULL;  int *ovector = NULL;
304  int small_ovector[POSIX_MALLOC_THRESHOLD * 3];  int small_ovector[POSIX_MALLOC_THRESHOLD * 3];
305  BOOL allocated_ovector = FALSE;  BOOL allocated_ovector = FALSE;
306    BOOL nosub =
307      (((const pcre *)preg->re_pcre)->options & PCRE_NO_AUTO_CAPTURE) != 0;
308    
309  if ((eflags & REG_NOTBOL) != 0) options |= PCRE_NOTBOL;  if ((eflags & REG_NOTBOL) != 0) options |= PCRE_NOTBOL;
310  if ((eflags & REG_NOTEOL) != 0) options |= PCRE_NOTEOL;  if ((eflags & REG_NOTEOL) != 0) options |= PCRE_NOTEOL;
311    if ((eflags & REG_NOTEMPTY) != 0) options |= PCRE_NOTEMPTY;
312    
313  ((regex_t *)preg)->re_erroffset = (size_t)(-1);  /* Only has meaning after compile */  ((regex_t *)preg)->re_erroffset = (size_t)(-1);  /* Only has meaning after compile */
314    
315  if (nmatch > 0)  /* When no string data is being returned, or no vector has been passed in which
316    to put it, ensure that nmatch is zero. Otherwise, ensure the vector for holding
317    the return data is large enough. */
318    
319    if (nosub || pmatch == NULL) nmatch = 0;
320    
321    else if (nmatch > 0)
322    {    {
323    if (nmatch <= POSIX_MALLOC_THRESHOLD)    if (nmatch <= POSIX_MALLOC_THRESHOLD)
324      {      {
# Line 259  if (nmatch > 0) Line 326  if (nmatch > 0)
326      }      }
327    else    else
328      {      {
329        if (nmatch > INT_MAX/(sizeof(int) * 3)) return REG_ESPACE;
330      ovector = (int *)malloc(sizeof(int) * nmatch * 3);      ovector = (int *)malloc(sizeof(int) * nmatch * 3);
331      if (ovector == NULL) return REG_ESPACE;      if (ovector == NULL) return REG_ESPACE;
332      allocated_ovector = TRUE;      allocated_ovector = TRUE;
333      }      }
334    }    }
335    
336  rc = pcre_exec((const pcre *)preg->re_pcre, NULL, string, (int)strlen(string),  /* REG_STARTEND is a BSD extension, to allow for non-NUL-terminated strings.
337    0, options, ovector, nmatch * 3);  The man page from OS X says "REG_STARTEND affects only the location of the
338    string, not how it is matched". That is why the "so" value is used to bump the
339    start location rather than being passed as a PCRE "starting offset". */
340    
341  if (rc == 0) rc = nmatch;    /* All captured slots were filled in */  if ((eflags & REG_STARTEND) != 0)
342      {
343      so = pmatch[0].rm_so;
344      eo = pmatch[0].rm_eo;
345      }
346    else
347      {
348      so = 0;
349      eo = (int)strlen(string);
350      }
351    
352    rc = pcre_exec((const pcre *)preg->re_pcre, NULL, string + so, (eo - so),
353      0, options, ovector, (int)(nmatch * 3));
354    
355    if (rc == 0) rc = (int)nmatch;    /* All captured slots were filled in */
356    
357    /* Successful match */
358    
359  if (rc >= 0)  if (rc >= 0)
360    {    {
361    size_t i;    size_t i;
362    for (i = 0; i < (size_t)rc; i++)    if (!nosub)
363      {      {
364      pmatch[i].rm_so = ovector[i*2];      for (i = 0; i < (size_t)rc; i++)
365      pmatch[i].rm_eo = ovector[i*2+1];        {
366          pmatch[i].rm_so = ovector[i*2];
367          pmatch[i].rm_eo = ovector[i*2+1];
368          }
369        if (allocated_ovector) free(ovector);
370        for (; i < nmatch; i++) pmatch[i].rm_so = pmatch[i].rm_eo = -1;
371      }      }
   if (allocated_ovector) free(ovector);  
   for (; i < nmatch; i++) pmatch[i].rm_so = pmatch[i].rm_eo = -1;  
372    return 0;    return 0;
373    }    }
374    
375  else  /* Unsuccessful match */
376    
377    if (allocated_ovector) free(ovector);
378    switch(rc)
379    {    {
380    if (allocated_ovector) free(ovector);  /* ========================================================================== */
381    switch(rc)    /* These cases are never obeyed. This is a fudge that causes a compile-time
382      {    error if the vector eint, which is indexed by compile-time error number, is
383      case PCRE_ERROR_NOMATCH: return REG_NOMATCH;    not the correct length. It seems to be the only way to do such a check at
384      case PCRE_ERROR_NULL: return REG_INVARG;    compile time, as the sizeof() operator does not work in the C preprocessor.
385      case PCRE_ERROR_BADOPTION: return REG_INVARG;    As all the PCRE_ERROR_xxx values are negative, we can use 0 and 1. */
386      case PCRE_ERROR_BADMAGIC: return REG_INVARG;  
387      case PCRE_ERROR_UNKNOWN_NODE: return REG_ASSERT;    case 0:
388      case PCRE_ERROR_NOMEMORY: return REG_ESPACE;    case (sizeof(eint)/sizeof(int) == ERRCOUNT):
389      case PCRE_ERROR_MATCHLIMIT: return REG_ESPACE;    return REG_ASSERT;
390      case PCRE_ERROR_BADUTF8: return REG_INVARG;  /* ========================================================================== */
391      case PCRE_ERROR_BADUTF8_OFFSET: return REG_INVARG;  
392      default: return REG_ASSERT;    case PCRE_ERROR_NOMATCH: return REG_NOMATCH;
393      }    case PCRE_ERROR_NULL: return REG_INVARG;
394      case PCRE_ERROR_BADOPTION: return REG_INVARG;
395      case PCRE_ERROR_BADMAGIC: return REG_INVARG;
396      case PCRE_ERROR_UNKNOWN_NODE: return REG_ASSERT;
397      case PCRE_ERROR_NOMEMORY: return REG_ESPACE;
398      case PCRE_ERROR_MATCHLIMIT: return REG_ESPACE;
399      case PCRE_ERROR_BADUTF8: return REG_INVARG;
400      case PCRE_ERROR_BADUTF8_OFFSET: return REG_INVARG;
401      default: return REG_ASSERT;
402    }    }
403  }  }
404    

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