source: trunk/libs/newlib/src/include/xregex2.h @ 468

Last change on this file since 468 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 21.1 KB
RevLine 
[444]1/* Definitions for data structures and routines for the regular
2   expression library, version 0.12.
3
4   Copyright (C) 1985-2015 Free Software Foundation, Inc.
5
6   This file is part of the GNU C Library.  Its master source is NOT part of
7   the C library, however.  The master source lives in /gd/gnu/lib.
8
9   The GNU C Library is free software; you can redistribute it and/or
10   modify it under the terms of the GNU Lesser General Public
11   License as published by the Free Software Foundation; either
12   version 2.1 of the License, or (at your option) any later version.
13
14   The GNU C Library is distributed in the hope that it will be useful,
15   but WITHOUT ANY WARRANTY; without even the implied warranty of
16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17   Lesser General Public License for more details.
18
19   You should have received a copy of the GNU Lesser General Public
20   License along with the GNU C Library; if not, write to the Free
21   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22   02110-1301 USA.  */
23
24#ifndef _REGEX_H
25#define _REGEX_H 1
26
27/* Allow the use in C++ code.  */
28#ifdef __cplusplus
29extern "C" {
30#endif
31
32/* POSIX says that <sys/types.h> must be included (by the caller) before
33   <regex.h>.  */
34
35#if !defined _POSIX_C_SOURCE && !defined _POSIX_SOURCE && defined VMS
36/* VMS doesn't have `size_t' in <sys/types.h>, even though POSIX says it
37   should be there.  */
38# include <stddef.h>
39#endif
40
41/* The following two types have to be signed and unsigned integer type
42   wide enough to hold a value of a pointer.  For most ANSI compilers
43   ptrdiff_t and size_t should be likely OK.  Still size of these two
44   types is 2 for Microsoft C.  Ugh... */
45typedef long int s_reg_t;
46typedef unsigned long int active_reg_t;
47
48/* The following bits are used to determine the regexp syntax we
49   recognize.  The set/not-set meanings are chosen so that Emacs syntax
50   remains the value 0.  The bits are given in alphabetical order, and
51   the definitions shifted by one from the previous bit; thus, when we
52   add or remove a bit, only one other definition need change.  */
53typedef unsigned long int reg_syntax_t;
54
55/* If this bit is not set, then \ inside a bracket expression is literal.
56   If set, then such a \ quotes the following character.  */
57#define RE_BACKSLASH_ESCAPE_IN_LISTS ((unsigned long int) 1)
58
59/* If this bit is not set, then + and ? are operators, and \+ and \? are
60     literals.
61   If set, then \+ and \? are operators and + and ? are literals.  */
62#define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)
63
64/* If this bit is set, then character classes are supported.  They are:
65     [:alpha:], [:upper:], [:lower:],  [:digit:], [:alnum:], [:xdigit:],
66     [:space:], [:print:], [:punct:], [:graph:], and [:cntrl:].
67   If not set, then character classes are not supported.  */
68#define RE_CHAR_CLASSES (RE_BK_PLUS_QM << 1)
69
70/* If this bit is set, then ^ and $ are always anchors (outside bracket
71     expressions, of course).
72   If this bit is not set, then it depends:
73        ^  is an anchor if it is at the beginning of a regular
74           expression or after an open-group or an alternation operator;
75        $  is an anchor if it is at the end of a regular expression, or
76           before a close-group or an alternation operator.
77
78   This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because
79   POSIX draft 11.2 says that * etc. in leading positions is undefined.
80   We already implemented a previous draft which made those constructs
81   invalid, though, so we haven't changed the code back.  */
82#define RE_CONTEXT_INDEP_ANCHORS (RE_CHAR_CLASSES << 1)
83
84/* If this bit is set, then special characters are always special
85     regardless of where they are in the pattern.
86   If this bit is not set, then special characters are special only in
87     some contexts; otherwise they are ordinary.  Specifically,
88     * + ? and intervals are only special when not after the beginning,
89     open-group, or alternation operator.  */
90#define RE_CONTEXT_INDEP_OPS (RE_CONTEXT_INDEP_ANCHORS << 1)
91
92/* If this bit is set, then *, +, ?, and { cannot be first in an re or
93     immediately after an alternation or begin-group operator.  */
94#define RE_CONTEXT_INVALID_OPS (RE_CONTEXT_INDEP_OPS << 1)
95
96/* If this bit is set, then . matches newline.
97   If not set, then it doesn't.  */
98#define RE_DOT_NEWLINE (RE_CONTEXT_INVALID_OPS << 1)
99
100/* If this bit is set, then . doesn't match NUL.
101   If not set, then it does.  */
102#define RE_DOT_NOT_NULL (RE_DOT_NEWLINE << 1)
103
104/* If this bit is set, nonmatching lists [^...] do not match newline.
105   If not set, they do.  */
106#define RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1)
107
108/* If this bit is set, either \{...\} or {...} defines an
109     interval, depending on RE_NO_BK_BRACES.
110   If not set, \{, \}, {, and } are literals.  */
111#define RE_INTERVALS (RE_HAT_LISTS_NOT_NEWLINE << 1)
112
113/* If this bit is set, +, ? and | aren't recognized as operators.
114   If not set, they are.  */
115#define RE_LIMITED_OPS (RE_INTERVALS << 1)
116
117/* If this bit is set, newline is an alternation operator.
118   If not set, newline is literal.  */
119#define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)
120
121/* If this bit is set, then `{...}' defines an interval, and \{ and \}
122     are literals.
123  If not set, then `\{...\}' defines an interval.  */
124#define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1)
125
126/* If this bit is set, (...) defines a group, and \( and \) are literals.
127   If not set, \(...\) defines a group, and ( and ) are literals.  */
128#define RE_NO_BK_PARENS (RE_NO_BK_BRACES << 1)
129
130/* If this bit is set, then \<digit> matches <digit>.
131   If not set, then \<digit> is a back-reference.  */
132#define RE_NO_BK_REFS (RE_NO_BK_PARENS << 1)
133
134/* If this bit is set, then | is an alternation operator, and \| is literal.
135   If not set, then \| is an alternation operator, and | is literal.  */
136#define RE_NO_BK_VBAR (RE_NO_BK_REFS << 1)
137
138/* If this bit is set, then an ending range point collating higher
139     than the starting range point, as in [z-a], is invalid.
140   If not set, then when ending range point collates higher than the
141     starting range point, the range is ignored.  */
142#define RE_NO_EMPTY_RANGES (RE_NO_BK_VBAR << 1)
143
144/* If this bit is set, then an unmatched ) is ordinary.
145   If not set, then an unmatched ) is invalid.  */
146#define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1)
147
148/* If this bit is set, succeed as soon as we match the whole pattern,
149   without further backtracking.  */
150#define RE_NO_POSIX_BACKTRACKING (RE_UNMATCHED_RIGHT_PAREN_ORD << 1)
151
152/* If this bit is set, do not process the GNU regex operators.
153   If not set, then the GNU regex operators are recognized. */
154#define RE_NO_GNU_OPS (RE_NO_POSIX_BACKTRACKING << 1)
155
156/* If this bit is set, turn on internal regex debugging.
157   If not set, and debugging was on, turn it off.
158   This only works if regex.c is compiled -DDEBUG.
159   We define this bit always, so that all that's needed to turn on
160   debugging is to recompile regex.c; the calling code can always have
161   this bit set, and it won't affect anything in the normal case. */
162#define RE_DEBUG (RE_NO_GNU_OPS << 1)
163
164/* If this bit is set, a syntactically invalid interval is treated as
165   a string of ordinary characters.  For example, the ERE 'a{1' is
166   treated as 'a\{1'.  */
167#define RE_INVALID_INTERVAL_ORD (RE_DEBUG << 1)
168
169/* This global variable defines the particular regexp syntax to use (for
170   some interfaces).  When a regexp is compiled, the syntax used is
171   stored in the pattern buffer, so changing this does not affect
172   already-compiled regexps.  */
173extern reg_syntax_t re_syntax_options;
174
175/* Define combinations of the above bits for the standard possibilities.
176   (The [[[ comments delimit what gets put into the Texinfo file, so
177   don't delete them!)  */
178/* [[[begin syntaxes]]] */
179#define RE_SYNTAX_EMACS 0
180
181#define RE_SYNTAX_AWK                                                   \
182  (RE_BACKSLASH_ESCAPE_IN_LISTS   | RE_DOT_NOT_NULL                     \
183   | RE_NO_BK_PARENS              | RE_NO_BK_REFS                       \
184   | RE_NO_BK_VBAR                | RE_NO_EMPTY_RANGES                  \
185   | RE_DOT_NEWLINE               | RE_CONTEXT_INDEP_ANCHORS            \
186   | RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS)
187
188#define RE_SYNTAX_GNU_AWK                                               \
189  ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DEBUG) \
190   & ~(RE_DOT_NOT_NULL | RE_INTERVALS | RE_CONTEXT_INDEP_OPS))
191
192#define RE_SYNTAX_POSIX_AWK                                             \
193  (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS              \
194   | RE_INTERVALS           | RE_NO_GNU_OPS)
195
196#define RE_SYNTAX_GREP                                                  \
197  (RE_BK_PLUS_QM              | RE_CHAR_CLASSES                         \
198   | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS                            \
199   | RE_NEWLINE_ALT)
200
201#define RE_SYNTAX_EGREP                                                 \
202  (RE_CHAR_CLASSES        | RE_CONTEXT_INDEP_ANCHORS                    \
203   | RE_CONTEXT_INDEP_OPS | RE_HAT_LISTS_NOT_NEWLINE                    \
204   | RE_NEWLINE_ALT       | RE_NO_BK_PARENS                             \
205   | RE_NO_BK_VBAR)
206
207#define RE_SYNTAX_POSIX_EGREP                                           \
208  (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES                     \
209   | RE_INVALID_INTERVAL_ORD)
210
211/* P1003.2/D11.2, section 4.20.7.1, lines 5078ff.  */
212#define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
213
214#define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC
215
216/* Syntax bits common to both basic and extended POSIX regex syntax.  */
217#define _RE_SYNTAX_POSIX_COMMON                                         \
218  (RE_CHAR_CLASSES | RE_DOT_NEWLINE      | RE_DOT_NOT_NULL              \
219   | RE_INTERVALS  | RE_NO_EMPTY_RANGES)
220
221#define RE_SYNTAX_POSIX_BASIC                                           \
222  (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM)
223
224/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
225   RE_LIMITED_OPS, i.e., \? \+ \| are not recognized.  Actually, this
226   isn't minimal, since other operators, such as \`, aren't disabled.  */
227#define RE_SYNTAX_POSIX_MINIMAL_BASIC                                   \
228  (_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS)
229
230#define RE_SYNTAX_POSIX_EXTENDED                                        \
231  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS                  \
232   | RE_CONTEXT_INDEP_OPS   | RE_NO_BK_BRACES                           \
233   | RE_NO_BK_PARENS        | RE_NO_BK_VBAR                             \
234   | RE_CONTEXT_INVALID_OPS | RE_UNMATCHED_RIGHT_PAREN_ORD)
235
236/* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INDEP_OPS is
237   removed and RE_NO_BK_REFS is added.  */
238#define RE_SYNTAX_POSIX_MINIMAL_EXTENDED                                \
239  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS                  \
240   | RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES                           \
241   | RE_NO_BK_PARENS        | RE_NO_BK_REFS                             \
242   | RE_NO_BK_VBAR          | RE_UNMATCHED_RIGHT_PAREN_ORD)
243/* [[[end syntaxes]]] */
244
245/* Maximum number of duplicates an interval can allow.  Some systems
246   (erroneously) define this in other header files, but we want our
247   value, so remove any previous define.  */
248#ifdef RE_DUP_MAX
249# undef RE_DUP_MAX
250#endif
251/* If sizeof(int) == 2, then ((1 << 15) - 1) overflows.  */
252#define RE_DUP_MAX (0x7fff)
253
254
255/* POSIX `cflags' bits (i.e., information for `regcomp').  */
256
257/* If this bit is set, then use extended regular expression syntax.
258   If not set, then use basic regular expression syntax.  */
259#define REG_EXTENDED 1
260
261/* If this bit is set, then ignore case when matching.
262   If not set, then case is significant.  */
263#define REG_ICASE (REG_EXTENDED << 1)
264
265/* If this bit is set, then anchors do not match at newline
266     characters in the string.
267   If not set, then anchors do match at newlines.  */
268#define REG_NEWLINE (REG_ICASE << 1)
269
270/* If this bit is set, then report only success or fail in regexec.
271   If not set, then returns differ between not matching and errors.  */
272#define REG_NOSUB (REG_NEWLINE << 1)
273
274
275/* POSIX `eflags' bits (i.e., information for regexec).  */
276
277/* If this bit is set, then the beginning-of-line operator doesn't match
278     the beginning of the string (presumably because it's not the
279     beginning of a line).
280   If not set, then the beginning-of-line operator does match the
281     beginning of the string.  */
282#define REG_NOTBOL 1
283
284/* Like REG_NOTBOL, except for the end-of-line.  */
285#define REG_NOTEOL (1 << 1)
286
287
288/* If any error codes are removed, changed, or added, update the
289   `re_error_msg' table in regex.c.  */
290typedef enum
291{
292#ifdef _XOPEN_SOURCE
293  REG_ENOSYS = -1,      /* This will never happen for this implementation.  */
294#endif
295
296  REG_NOERROR = 0,      /* Success.  */
297  REG_NOMATCH,          /* Didn't find a match (for regexec).  */
298
299  /* POSIX regcomp return error codes.  (In the order listed in the
300     standard.)  */
301  REG_BADPAT,           /* Invalid pattern.  */
302  REG_ECOLLATE,         /* Not implemented.  */
303  REG_ECTYPE,           /* Invalid character class name.  */
304  REG_EESCAPE,          /* Trailing backslash.  */
305  REG_ESUBREG,          /* Invalid back reference.  */
306  REG_EBRACK,           /* Unmatched left bracket.  */
307  REG_EPAREN,           /* Parenthesis imbalance.  */
308  REG_EBRACE,           /* Unmatched \{.  */
309  REG_BADBR,            /* Invalid contents of \{\}.  */
310  REG_ERANGE,           /* Invalid range end.  */
311  REG_ESPACE,           /* Ran out of memory.  */
312  REG_BADRPT,           /* No preceding re for repetition op.  */
313
314  /* Error codes we've added.  */
315  REG_EEND,             /* Premature end.  */
316  REG_ESIZE,            /* Compiled pattern bigger than 2^16 bytes.  */
317  REG_ERPAREN           /* Unmatched ) or \); not returned from regcomp.  */
318} reg_errcode_t;
319
320/* This data structure represents a compiled pattern.  Before calling
321   the pattern compiler, the fields `buffer', `allocated', `fastmap',
322   `translate', and `no_sub' can be set.  After the pattern has been
323   compiled, the `re_nsub' field is available.  All other fields are
324   private to the regex routines.  */
325
326#ifndef RE_TRANSLATE_TYPE
327# define RE_TRANSLATE_TYPE char *
328#endif
329
330struct re_pattern_buffer
331{
332/* [[[begin pattern_buffer]]] */
333        /* Space that holds the compiled pattern.  It is declared as
334          `unsigned char *' because its elements are
335           sometimes used as array indexes.  */
336  unsigned char *buffer;
337
338        /* Number of bytes to which `buffer' points.  */
339  unsigned long int allocated;
340
341        /* Number of bytes actually used in `buffer'.  */
342  unsigned long int used;
343
344        /* Syntax setting with which the pattern was compiled.  */
345  reg_syntax_t syntax;
346
347        /* Pointer to a fastmap, if any, otherwise zero.  re_search uses
348           the fastmap, if there is one, to skip over impossible
349           starting points for matches.  */
350  char *fastmap;
351
352        /* Either a translate table to apply to all characters before
353           comparing them, or zero for no translation.  The translation
354           is applied to a pattern when it is compiled and to a string
355           when it is matched.  */
356  RE_TRANSLATE_TYPE translate;
357
358        /* Number of subexpressions found by the compiler.  */
359  size_t re_nsub;
360
361        /* Zero if this pattern cannot match the empty string, one else.
362           Well, in truth it's used only in `re_search_2', to see
363           whether or not we should use the fastmap, so we don't set
364           this absolutely perfectly; see `re_compile_fastmap' (the
365           `duplicate' case).  */
366  unsigned can_be_null : 1;
367
368        /* If REGS_UNALLOCATED, allocate space in the `regs' structure
369             for `max (RE_NREGS, re_nsub + 1)' groups.
370           If REGS_REALLOCATE, reallocate space if necessary.
371           If REGS_FIXED, use what's there.  */
372#define REGS_UNALLOCATED 0
373#define REGS_REALLOCATE 1
374#define REGS_FIXED 2
375  unsigned regs_allocated : 2;
376
377        /* Set to zero when `regex_compile' compiles a pattern; set to one
378           by `re_compile_fastmap' if it updates the fastmap.  */
379  unsigned fastmap_accurate : 1;
380
381        /* If set, `re_match_2' does not return information about
382           subexpressions.  */
383  unsigned no_sub : 1;
384
385        /* If set, a beginning-of-line anchor doesn't match at the
386           beginning of the string.  */
387  unsigned not_bol : 1;
388
389        /* Similarly for an end-of-line anchor.  */
390  unsigned not_eol : 1;
391
392        /* If true, an anchor at a newline matches.  */
393  unsigned newline_anchor : 1;
394
395/* [[[end pattern_buffer]]] */
396};
397
398typedef struct re_pattern_buffer regex_t;
399
400/* Type for byte offsets within the string.  POSIX mandates this.  */
401typedef int regoff_t;
402
403
404/* This is the structure we store register match data in.  See
405   regex.texinfo for a full description of what registers match.  */
406struct re_registers
407{
408  unsigned num_regs;
409  regoff_t *start;
410  regoff_t *end;
411};
412
413
414/* If `regs_allocated' is REGS_UNALLOCATED in the pattern buffer,
415   `re_match_2' returns information about at least this many registers
416   the first time a `regs' structure is passed.  */
417#ifndef RE_NREGS
418# define RE_NREGS 30
419#endif
420
421
422/* POSIX specification for registers.  Aside from the different names than
423   `re_registers', POSIX uses an array of structures, instead of a
424   structure of arrays.  */
425typedef struct
426{
427  regoff_t rm_so;  /* Byte offset from string's start to substring's start.  */
428  regoff_t rm_eo;  /* Byte offset from string's start to substring's end.  */
429} regmatch_t;
430
431/* Declarations for routines.  */
432
433/* To avoid duplicating every routine declaration -- once with a
434   prototype (if we are ANSI), and once without (if we aren't) -- we
435   use the following macro to declare argument types.  This
436   unfortunately clutters up the declarations a bit, but I think it's
437   worth it.  */
438
439/* Sets the current default syntax to SYNTAX, and return the old syntax.
440   You can also simply assign to the `re_syntax_options' variable.  */
441extern reg_syntax_t re_set_syntax (reg_syntax_t syntax);
442
443/* Compile the regular expression PATTERN, with length LENGTH
444   and syntax given by the global `re_syntax_options', into the buffer
445   BUFFER.  Return NULL if successful, and an error string if not.  */
446extern const char *re_compile_pattern (const char *pattern, size_t length,
447                                       struct re_pattern_buffer *buffer);
448
449
450/* Compile a fastmap for the compiled pattern in BUFFER; used to
451   accelerate searches.  Return 0 if successful and -2 if was an
452   internal error.  */
453extern int re_compile_fastmap (struct re_pattern_buffer *buffer);
454
455
456/* Search in the string STRING (with length LENGTH) for the pattern
457   compiled into BUFFER.  Start searching at position START, for RANGE
458   characters.  Return the starting position of the match, -1 for no
459   match, or -2 for an internal error.  Also return register
460   information in REGS (if REGS and BUFFER->no_sub are nonzero).  */
461extern int re_search (struct re_pattern_buffer *buffer, const char *string,
462                      int length, int start, int range,
463                      struct re_registers *regs);
464
465
466/* Like `re_search', but search in the concatenation of STRING1 and
467   STRING2.  Also, stop searching at index START + STOP.  */
468extern int re_search_2 (struct re_pattern_buffer *buffer, const char *string1,
469                        int length1, const char *string2, int length2,
470                        int start, int range, struct re_registers *regs,
471                        int stop);
472
473
474/* Like `re_search', but return how many characters in STRING the regexp
475   in BUFFER matched, starting at position START.  */
476extern int re_match (struct re_pattern_buffer *buffer, const char *string,
477                     int length, int start, struct re_registers *regs);
478
479
480/* Relates to `re_match' as `re_search_2' relates to `re_search'.  */
481extern int re_match_2 (struct re_pattern_buffer *buffer, const char *string1,
482                       int length1, const char *string2, int length2,
483                       int start, struct re_registers *regs, int stop);
484
485
486/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
487   ENDS.  Subsequent matches using BUFFER and REGS will use this memory
488   for recording register information.  STARTS and ENDS must be
489   allocated with malloc, and must each be at least `NUM_REGS * sizeof
490   (regoff_t)' bytes long.
491
492   If NUM_REGS == 0, then subsequent matches should allocate their own
493   register data.
494
495   Unless this function is called, the first search or match using
496   PATTERN_BUFFER will allocate its own register data, without
497   freeing the old data.  */
498extern void re_set_registers (struct re_pattern_buffer *buffer,
499                              struct re_registers *regs,
500                              unsigned num_regs, regoff_t *starts,
501                              regoff_t *ends);
502
503#if defined _REGEX_RE_COMP || defined _LIBC
504# ifndef _CRAY
505/* 4.2 bsd compatibility.  */
506extern char *re_comp (const char *);
507extern int re_exec (const char *);
508# endif
509#endif
510
511/* GCC 2.95 and later have "__restrict"; C99 compilers have
512   "restrict", and "configure" may have defined "restrict".  */
513#ifndef __restrict
514# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
515#  if defined restrict || 199901L <= __STDC_VERSION__
516#   define __restrict restrict
517#  else
518#   define __restrict
519#  endif
520# endif
521#endif
522
523/* GCC 3.1 and later support declaring arrays as non-overlapping
524   using the syntax array_name[restrict]  */
525#ifndef __restrict_arr
526# if ! (3 < __GNUC__ || (3 == __GNUC__ && 1 <= __GNUC_MINOR__)) || defined (__GNUG__)
527#  define __restrict_arr
528# else
529#  define __restrict_arr __restrict
530# endif
531#endif
532
533/* POSIX compatibility.  */
534extern int regcomp (regex_t *__restrict __preg,
535                    const char *__restrict __pattern,
536                    int __cflags);
537
538#if (__GNUC__)
539__extension__
540#endif
541extern int regexec (const regex_t *__restrict __preg,
542                    const char *__restrict __string, size_t __nmatch,
543                    regmatch_t __pmatch[__restrict_arr],
544                    int __eflags);
545
546extern size_t regerror (int __errcode, const regex_t *__preg,
547                        char *__errbuf, size_t __errbuf_size);
548
549extern void regfree (regex_t *__preg);
550
551
552#ifdef __cplusplus
553}
554#endif  /* C++ */
555
556#endif /* regex.h */
557
558/*
559Local variables:
560make-backup-files: t
561version-control: t
562trim-versions-without-asking: nil
563End:
564*/
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