source: trunk/src/grep/lib/string.in.h@ 3603

Last change on this file since 3603 was 3529, checked in by bird, 4 years ago

Imported grep 3.7 from grep-3.7.tar.gz (sha256: c22b0cf2d4f6bbe599c902387e8058990e1eee99aef333a203829e5fd3dbb342), applying minimal auto-props.
  • Property svn:eol-style set to native
File size: 45.2 KB
Line 
1/* A GNU-like <string.h>.
2
3 Copyright (C) 1995-1996, 2001-2021 Free Software Foundation, Inc.
4
5 This file is free software: you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as
7 published by the Free Software Foundation; either version 2.1 of the
8 License, or (at your option) any later version.
9
10 This file is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public License
16 along with this program. If not, see <https://www.gnu.org/licenses/>. */
17
18#if __GNUC__ >= 3
19@PRAGMA_SYSTEM_HEADER@
20#endif
21@PRAGMA_COLUMNS@
22
23#if defined _GL_ALREADY_INCLUDING_STRING_H
24/* Special invocation convention:
25 - On OS X/NetBSD we have a sequence of nested includes
26 <string.h> -> <strings.h> -> "string.h"
27 In this situation system _chk variants due to -D_FORTIFY_SOURCE
28 might be used after any replacements defined here. */
29
30#@INCLUDE_NEXT@ @NEXT_STRING_H@
31
32#else
33/* Normal invocation convention. */
34
35#ifndef _@GUARD_PREFIX@_STRING_H
36
37#define _GL_ALREADY_INCLUDING_STRING_H
38
39/* The include_next requires a split double-inclusion guard. */
40#@INCLUDE_NEXT@ @NEXT_STRING_H@
41
42#undef _GL_ALREADY_INCLUDING_STRING_H
43
44#ifndef _@GUARD_PREFIX@_STRING_H
45#define _@GUARD_PREFIX@_STRING_H
46
47/* NetBSD 5.0 mis-defines NULL. */
48#include <stddef.h>
49
50/* Get free(). */
51#include <stdlib.h>
52
53/* MirBSD defines mbslen as a macro. */
54#if @GNULIB_MBSLEN@ && defined __MirBSD__
55# include <wchar.h>
56#endif
57
58/* The __attribute__ feature is available in gcc versions 2.5 and later.
59 The attribute __pure__ was added in gcc 2.96. */
60#ifndef _GL_ATTRIBUTE_PURE
61# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__
62# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
63# else
64# define _GL_ATTRIBUTE_PURE /* empty */
65# endif
66#endif
67
68/* NetBSD 5.0 declares strsignal in <unistd.h>, not in <string.h>. */
69/* But in any case avoid namespace pollution on glibc systems. */
70#if (@GNULIB_STRSIGNAL@ || defined GNULIB_POSIXCHECK) && defined __NetBSD__ \
71 && ! defined __GLIBC__
72# include <unistd.h>
73#endif
74
75/* AIX 7.2 declares ffsl and ffsll in <strings.h>, not in <string.h>. */
76/* But in any case avoid namespace pollution on glibc systems. */
77#if ((@GNULIB_FFSL@ || @GNULIB_FFSLL@ || defined GNULIB_POSIXCHECK) \
78 && defined _AIX) \
79 && ! defined __GLIBC__
80# include <strings.h>
81#endif
82
83/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
84
85/* The definition of _GL_ARG_NONNULL is copied here. */
86
87/* The definition of _GL_WARN_ON_USE is copied here. */
88
89
90/* Clear a block of memory. The compiler will not delete a call to
91 this function, even if the block is dead after the call. */
92#if @GNULIB_EXPLICIT_BZERO@
93# if ! @HAVE_EXPLICIT_BZERO@
94_GL_FUNCDECL_SYS (explicit_bzero, void,
95 (void *__dest, size_t __n) _GL_ARG_NONNULL ((1)));
96# endif
97_GL_CXXALIAS_SYS (explicit_bzero, void, (void *__dest, size_t __n));
98_GL_CXXALIASWARN (explicit_bzero);
99#elif defined GNULIB_POSIXCHECK
100# undef explicit_bzero
101# if HAVE_RAW_DECL_EXPLICIT_BZERO
102_GL_WARN_ON_USE (explicit_bzero, "explicit_bzero is unportable - "
103 "use gnulib module explicit_bzero for portability");
104# endif
105#endif
106
107/* Find the index of the least-significant set bit. */
108#if @GNULIB_FFSL@
109# if !@HAVE_FFSL@
110_GL_FUNCDECL_SYS (ffsl, int, (long int i));
111# endif
112_GL_CXXALIAS_SYS (ffsl, int, (long int i));
113_GL_CXXALIASWARN (ffsl);
114#elif defined GNULIB_POSIXCHECK
115# undef ffsl
116# if HAVE_RAW_DECL_FFSL
117_GL_WARN_ON_USE (ffsl, "ffsl is not portable - use the ffsl module");
118# endif
119#endif
120
121
122/* Find the index of the least-significant set bit. */
123#if @GNULIB_FFSLL@
124# if @REPLACE_FFSLL@
125# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
126# define ffsll rpl_ffsll
127# endif
128_GL_FUNCDECL_RPL (ffsll, int, (long long int i));
129_GL_CXXALIAS_RPL (ffsll, int, (long long int i));
130# else
131# if !@HAVE_FFSLL@
132_GL_FUNCDECL_SYS (ffsll, int, (long long int i));
133# endif
134_GL_CXXALIAS_SYS (ffsll, int, (long long int i));
135# endif
136_GL_CXXALIASWARN (ffsll);
137#elif defined GNULIB_POSIXCHECK
138# undef ffsll
139# if HAVE_RAW_DECL_FFSLL
140_GL_WARN_ON_USE (ffsll, "ffsll is not portable - use the ffsll module");
141# endif
142#endif
143
144
145#if @GNULIB_MDA_MEMCCPY@
146/* On native Windows, map 'memccpy' to '_memccpy', so that -loldnames is not
147 required. In C++ with GNULIB_NAMESPACE, avoid differences between
148 platforms by defining GNULIB_NAMESPACE::memccpy always. */
149# if defined _WIN32 && !defined __CYGWIN__
150# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
151# undef memccpy
152# define memccpy _memccpy
153# endif
154_GL_CXXALIAS_MDA (memccpy, void *,
155 (void *dest, const void *src, int c, size_t n));
156# else
157_GL_CXXALIAS_SYS (memccpy, void *,
158 (void *dest, const void *src, int c, size_t n));
159# endif
160_GL_CXXALIASWARN (memccpy);
161#endif
162
163
164/* Return the first instance of C within N bytes of S, or NULL. */
165#if @GNULIB_MEMCHR@
166# if @REPLACE_MEMCHR@
167# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
168# undef memchr
169# define memchr rpl_memchr
170# endif
171_GL_FUNCDECL_RPL (memchr, void *, (void const *__s, int __c, size_t __n)
172 _GL_ATTRIBUTE_PURE
173 _GL_ARG_NONNULL ((1)));
174_GL_CXXALIAS_RPL (memchr, void *, (void const *__s, int __c, size_t __n));
175# else
176 /* On some systems, this function is defined as an overloaded function:
177 extern "C" { const void * std::memchr (const void *, int, size_t); }
178 extern "C++" { void * std::memchr (void *, int, size_t); } */
179_GL_CXXALIAS_SYS_CAST2 (memchr,
180 void *, (void const *__s, int __c, size_t __n),
181 void const *, (void const *__s, int __c, size_t __n));
182# endif
183# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
184 && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
185_GL_CXXALIASWARN1 (memchr, void *, (void *__s, int __c, size_t __n));
186_GL_CXXALIASWARN1 (memchr, void const *,
187 (void const *__s, int __c, size_t __n));
188# elif __GLIBC__ >= 2
189_GL_CXXALIASWARN (memchr);
190# endif
191#elif defined GNULIB_POSIXCHECK
192# undef memchr
193/* Assume memchr is always declared. */
194_GL_WARN_ON_USE (memchr, "memchr has platform-specific bugs - "
195 "use gnulib module memchr for portability" );
196#endif
197
198/* Return the first occurrence of NEEDLE in HAYSTACK. */
199#if @GNULIB_MEMMEM@
200# if @REPLACE_MEMMEM@
201# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
202# define memmem rpl_memmem
203# endif
204_GL_FUNCDECL_RPL (memmem, void *,
205 (void const *__haystack, size_t __haystack_len,
206 void const *__needle, size_t __needle_len)
207 _GL_ATTRIBUTE_PURE
208 _GL_ARG_NONNULL ((1, 3)));
209_GL_CXXALIAS_RPL (memmem, void *,
210 (void const *__haystack, size_t __haystack_len,
211 void const *__needle, size_t __needle_len));
212# else
213# if ! @HAVE_DECL_MEMMEM@
214_GL_FUNCDECL_SYS (memmem, void *,
215 (void const *__haystack, size_t __haystack_len,
216 void const *__needle, size_t __needle_len)
217 _GL_ATTRIBUTE_PURE
218 _GL_ARG_NONNULL ((1, 3)));
219# endif
220_GL_CXXALIAS_SYS (memmem, void *,
221 (void const *__haystack, size_t __haystack_len,
222 void const *__needle, size_t __needle_len));
223# endif
224_GL_CXXALIASWARN (memmem);
225#elif defined GNULIB_POSIXCHECK
226# undef memmem
227# if HAVE_RAW_DECL_MEMMEM
228_GL_WARN_ON_USE (memmem, "memmem is unportable and often quadratic - "
229 "use gnulib module memmem-simple for portability, "
230 "and module memmem for speed" );
231# endif
232#endif
233
234/* Copy N bytes of SRC to DEST, return pointer to bytes after the
235 last written byte. */
236#if @GNULIB_MEMPCPY@
237# if ! @HAVE_MEMPCPY@
238_GL_FUNCDECL_SYS (mempcpy, void *,
239 (void *restrict __dest, void const *restrict __src,
240 size_t __n)
241 _GL_ARG_NONNULL ((1, 2)));
242# endif
243_GL_CXXALIAS_SYS (mempcpy, void *,
244 (void *restrict __dest, void const *restrict __src,
245 size_t __n));
246_GL_CXXALIASWARN (mempcpy);
247#elif defined GNULIB_POSIXCHECK
248# undef mempcpy
249# if HAVE_RAW_DECL_MEMPCPY
250_GL_WARN_ON_USE (mempcpy, "mempcpy is unportable - "
251 "use gnulib module mempcpy for portability");
252# endif
253#endif
254
255/* Search backwards through a block for a byte (specified as an int). */
256#if @GNULIB_MEMRCHR@
257# if ! @HAVE_DECL_MEMRCHR@
258_GL_FUNCDECL_SYS (memrchr, void *, (void const *, int, size_t)
259 _GL_ATTRIBUTE_PURE
260 _GL_ARG_NONNULL ((1)));
261# endif
262 /* On some systems, this function is defined as an overloaded function:
263 extern "C++" { const void * std::memrchr (const void *, int, size_t); }
264 extern "C++" { void * std::memrchr (void *, int, size_t); } */
265_GL_CXXALIAS_SYS_CAST2 (memrchr,
266 void *, (void const *, int, size_t),
267 void const *, (void const *, int, size_t));
268# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
269 && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
270_GL_CXXALIASWARN1 (memrchr, void *, (void *, int, size_t));
271_GL_CXXALIASWARN1 (memrchr, void const *, (void const *, int, size_t));
272# else
273_GL_CXXALIASWARN (memrchr);
274# endif
275#elif defined GNULIB_POSIXCHECK
276# undef memrchr
277# if HAVE_RAW_DECL_MEMRCHR
278_GL_WARN_ON_USE (memrchr, "memrchr is unportable - "
279 "use gnulib module memrchr for portability");
280# endif
281#endif
282
283/* Find the first occurrence of C in S. More efficient than
284 memchr(S,C,N), at the expense of undefined behavior if C does not
285 occur within N bytes. */
286#if @GNULIB_RAWMEMCHR@
287# if ! @HAVE_RAWMEMCHR@
288_GL_FUNCDECL_SYS (rawmemchr, void *, (void const *__s, int __c_in)
289 _GL_ATTRIBUTE_PURE
290 _GL_ARG_NONNULL ((1)));
291# endif
292 /* On some systems, this function is defined as an overloaded function:
293 extern "C++" { const void * std::rawmemchr (const void *, int); }
294 extern "C++" { void * std::rawmemchr (void *, int); } */
295_GL_CXXALIAS_SYS_CAST2 (rawmemchr,
296 void *, (void const *__s, int __c_in),
297 void const *, (void const *__s, int __c_in));
298# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
299 && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
300_GL_CXXALIASWARN1 (rawmemchr, void *, (void *__s, int __c_in));
301_GL_CXXALIASWARN1 (rawmemchr, void const *, (void const *__s, int __c_in));
302# else
303_GL_CXXALIASWARN (rawmemchr);
304# endif
305#elif defined GNULIB_POSIXCHECK
306# undef rawmemchr
307# if HAVE_RAW_DECL_RAWMEMCHR
308_GL_WARN_ON_USE (rawmemchr, "rawmemchr is unportable - "
309 "use gnulib module rawmemchr for portability");
310# endif
311#endif
312
313/* Copy SRC to DST, returning the address of the terminating '\0' in DST. */
314#if @GNULIB_STPCPY@
315# if ! @HAVE_STPCPY@
316_GL_FUNCDECL_SYS (stpcpy, char *,
317 (char *restrict __dst, char const *restrict __src)
318 _GL_ARG_NONNULL ((1, 2)));
319# endif
320_GL_CXXALIAS_SYS (stpcpy, char *,
321 (char *restrict __dst, char const *restrict __src));
322_GL_CXXALIASWARN (stpcpy);
323#elif defined GNULIB_POSIXCHECK
324# undef stpcpy
325# if HAVE_RAW_DECL_STPCPY
326_GL_WARN_ON_USE (stpcpy, "stpcpy is unportable - "
327 "use gnulib module stpcpy for portability");
328# endif
329#endif
330
331/* Copy no more than N bytes of SRC to DST, returning a pointer past the
332 last non-NUL byte written into DST. */
333#if @GNULIB_STPNCPY@
334# if @REPLACE_STPNCPY@
335# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
336# undef stpncpy
337# define stpncpy rpl_stpncpy
338# endif
339_GL_FUNCDECL_RPL (stpncpy, char *,
340 (char *restrict __dst, char const *restrict __src,
341 size_t __n)
342 _GL_ARG_NONNULL ((1, 2)));
343_GL_CXXALIAS_RPL (stpncpy, char *,
344 (char *restrict __dst, char const *restrict __src,
345 size_t __n));
346# else
347# if ! @HAVE_STPNCPY@
348_GL_FUNCDECL_SYS (stpncpy, char *,
349 (char *restrict __dst, char const *restrict __src,
350 size_t __n)
351 _GL_ARG_NONNULL ((1, 2)));
352# endif
353_GL_CXXALIAS_SYS (stpncpy, char *,
354 (char *restrict __dst, char const *restrict __src,
355 size_t __n));
356# endif
357_GL_CXXALIASWARN (stpncpy);
358#elif defined GNULIB_POSIXCHECK
359# undef stpncpy
360# if HAVE_RAW_DECL_STPNCPY
361_GL_WARN_ON_USE (stpncpy, "stpncpy is unportable - "
362 "use gnulib module stpncpy for portability");
363# endif
364#endif
365
366#if defined GNULIB_POSIXCHECK
367/* strchr() does not work with multibyte strings if the locale encoding is
368 GB18030 and the character to be searched is a digit. */
369# undef strchr
370/* Assume strchr is always declared. */
371_GL_WARN_ON_USE_CXX (strchr,
372 const char *, char *, (const char *, int),
373 "strchr cannot work correctly on character strings "
374 "in some multibyte locales - "
375 "use mbschr if you care about internationalization");
376#endif
377
378/* Find the first occurrence of C in S or the final NUL byte. */
379#if @GNULIB_STRCHRNUL@
380# if @REPLACE_STRCHRNUL@
381# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
382# define strchrnul rpl_strchrnul
383# endif
384_GL_FUNCDECL_RPL (strchrnul, char *, (const char *__s, int __c_in)
385 _GL_ATTRIBUTE_PURE
386 _GL_ARG_NONNULL ((1)));
387_GL_CXXALIAS_RPL (strchrnul, char *,
388 (const char *str, int ch));
389# else
390# if ! @HAVE_STRCHRNUL@
391_GL_FUNCDECL_SYS (strchrnul, char *, (char const *__s, int __c_in)
392 _GL_ATTRIBUTE_PURE
393 _GL_ARG_NONNULL ((1)));
394# endif
395 /* On some systems, this function is defined as an overloaded function:
396 extern "C++" { const char * std::strchrnul (const char *, int); }
397 extern "C++" { char * std::strchrnul (char *, int); } */
398_GL_CXXALIAS_SYS_CAST2 (strchrnul,
399 char *, (char const *__s, int __c_in),
400 char const *, (char const *__s, int __c_in));
401# endif
402# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
403 && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
404_GL_CXXALIASWARN1 (strchrnul, char *, (char *__s, int __c_in));
405_GL_CXXALIASWARN1 (strchrnul, char const *, (char const *__s, int __c_in));
406# else
407_GL_CXXALIASWARN (strchrnul);
408# endif
409#elif defined GNULIB_POSIXCHECK
410# undef strchrnul
411# if HAVE_RAW_DECL_STRCHRNUL
412_GL_WARN_ON_USE (strchrnul, "strchrnul is unportable - "
413 "use gnulib module strchrnul for portability");
414# endif
415#endif
416
417/* Duplicate S, returning an identical malloc'd string. */
418#if @GNULIB_STRDUP@
419# if @REPLACE_STRDUP@
420# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
421# undef strdup
422# define strdup rpl_strdup
423# endif
424_GL_FUNCDECL_RPL (strdup, char *,
425 (char const *__s)
426 _GL_ARG_NONNULL ((1))
427 _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
428_GL_CXXALIAS_RPL (strdup, char *, (char const *__s));
429# elif defined _WIN32 && !defined __CYGWIN__
430# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
431# undef strdup
432# define strdup _strdup
433# endif
434_GL_CXXALIAS_MDA (strdup, char *, (char const *__s));
435# else
436# if defined __cplusplus && defined GNULIB_NAMESPACE && defined strdup
437 /* strdup exists as a function and as a macro. Get rid of the macro. */
438# undef strdup
439# endif
440# if (!@HAVE_DECL_STRDUP@ || __GNUC__ >= 11) && !defined strdup
441_GL_FUNCDECL_SYS (strdup, char *,
442 (char const *__s)
443 _GL_ARG_NONNULL ((1))
444 _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
445# endif
446_GL_CXXALIAS_SYS (strdup, char *, (char const *__s));
447# endif
448_GL_CXXALIASWARN (strdup);
449#else
450# if __GNUC__ >= 11 && !defined strdup
451/* For -Wmismatched-dealloc: Associate strdup with free or rpl_free. */
452_GL_FUNCDECL_SYS (strdup, char *,
453 (char const *__s)
454 _GL_ARG_NONNULL ((1))
455 _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
456# endif
457# if defined GNULIB_POSIXCHECK
458# undef strdup
459# if HAVE_RAW_DECL_STRDUP
460_GL_WARN_ON_USE (strdup, "strdup is unportable - "
461 "use gnulib module strdup for portability");
462# endif
463# elif @GNULIB_MDA_STRDUP@
464/* On native Windows, map 'creat' to '_creat', so that -loldnames is not
465 required. In C++ with GNULIB_NAMESPACE, avoid differences between
466 platforms by defining GNULIB_NAMESPACE::strdup always. */
467# if defined _WIN32 && !defined __CYGWIN__
468# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
469# undef strdup
470# define strdup _strdup
471# endif
472_GL_CXXALIAS_MDA (strdup, char *, (char const *__s));
473# else
474# if defined __cplusplus && defined GNULIB_NAMESPACE && defined strdup
475# undef strdup
476# endif
477_GL_CXXALIAS_SYS (strdup, char *, (char const *__s));
478# endif
479_GL_CXXALIASWARN (strdup);
480# endif
481#endif
482
483/* Append no more than N characters from SRC onto DEST. */
484#if @GNULIB_STRNCAT@
485# if @REPLACE_STRNCAT@
486# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
487# undef strncat
488# define strncat rpl_strncat
489# endif
490_GL_FUNCDECL_RPL (strncat, char *,
491 (char *restrict dest, const char *restrict src, size_t n)
492 _GL_ARG_NONNULL ((1, 2)));
493_GL_CXXALIAS_RPL (strncat, char *,
494 (char *restrict dest, const char *restrict src, size_t n));
495# else
496_GL_CXXALIAS_SYS (strncat, char *,
497 (char *restrict dest, const char *restrict src, size_t n));
498# endif
499# if __GLIBC__ >= 2
500_GL_CXXALIASWARN (strncat);
501# endif
502#elif defined GNULIB_POSIXCHECK
503# undef strncat
504# if HAVE_RAW_DECL_STRNCAT
505_GL_WARN_ON_USE (strncat, "strncat is unportable - "
506 "use gnulib module strncat for portability");
507# endif
508#endif
509
510/* Return a newly allocated copy of at most N bytes of STRING. */
511#if @GNULIB_STRNDUP@
512# if @REPLACE_STRNDUP@
513# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
514# undef strndup
515# define strndup rpl_strndup
516# endif
517_GL_FUNCDECL_RPL (strndup, char *, (char const *__s, size_t __n)
518 _GL_ARG_NONNULL ((1)));
519_GL_CXXALIAS_RPL (strndup, char *, (char const *__s, size_t __n));
520# else
521# if ! @HAVE_DECL_STRNDUP@
522_GL_FUNCDECL_SYS (strndup, char *, (char const *__s, size_t __n)
523 _GL_ARG_NONNULL ((1)));
524# endif
525_GL_CXXALIAS_SYS (strndup, char *, (char const *__s, size_t __n));
526# endif
527_GL_CXXALIASWARN (strndup);
528#elif defined GNULIB_POSIXCHECK
529# undef strndup
530# if HAVE_RAW_DECL_STRNDUP
531_GL_WARN_ON_USE (strndup, "strndup is unportable - "
532 "use gnulib module strndup for portability");
533# endif
534#endif
535
536/* Find the length (number of bytes) of STRING, but scan at most
537 MAXLEN bytes. If no '\0' terminator is found in that many bytes,
538 return MAXLEN. */
539#if @GNULIB_STRNLEN@
540# if @REPLACE_STRNLEN@
541# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
542# undef strnlen
543# define strnlen rpl_strnlen
544# endif
545_GL_FUNCDECL_RPL (strnlen, size_t, (char const *__s, size_t __maxlen)
546 _GL_ATTRIBUTE_PURE
547 _GL_ARG_NONNULL ((1)));
548_GL_CXXALIAS_RPL (strnlen, size_t, (char const *__s, size_t __maxlen));
549# else
550# if ! @HAVE_DECL_STRNLEN@
551_GL_FUNCDECL_SYS (strnlen, size_t, (char const *__s, size_t __maxlen)
552 _GL_ATTRIBUTE_PURE
553 _GL_ARG_NONNULL ((1)));
554# endif
555_GL_CXXALIAS_SYS (strnlen, size_t, (char const *__s, size_t __maxlen));
556# endif
557_GL_CXXALIASWARN (strnlen);
558#elif defined GNULIB_POSIXCHECK
559# undef strnlen
560# if HAVE_RAW_DECL_STRNLEN
561_GL_WARN_ON_USE (strnlen, "strnlen is unportable - "
562 "use gnulib module strnlen for portability");
563# endif
564#endif
565
566#if defined GNULIB_POSIXCHECK
567/* strcspn() assumes the second argument is a list of single-byte characters.
568 Even in this simple case, it does not work with multibyte strings if the
569 locale encoding is GB18030 and one of the characters to be searched is a
570 digit. */
571# undef strcspn
572/* Assume strcspn is always declared. */
573_GL_WARN_ON_USE (strcspn, "strcspn cannot work correctly on character strings "
574 "in multibyte locales - "
575 "use mbscspn if you care about internationalization");
576#endif
577
578/* Find the first occurrence in S of any character in ACCEPT. */
579#if @GNULIB_STRPBRK@
580# if ! @HAVE_STRPBRK@
581_GL_FUNCDECL_SYS (strpbrk, char *, (char const *__s, char const *__accept)
582 _GL_ATTRIBUTE_PURE
583 _GL_ARG_NONNULL ((1, 2)));
584# endif
585 /* On some systems, this function is defined as an overloaded function:
586 extern "C" { const char * strpbrk (const char *, const char *); }
587 extern "C++" { char * strpbrk (char *, const char *); } */
588_GL_CXXALIAS_SYS_CAST2 (strpbrk,
589 char *, (char const *__s, char const *__accept),
590 const char *, (char const *__s, char const *__accept));
591# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
592 && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
593_GL_CXXALIASWARN1 (strpbrk, char *, (char *__s, char const *__accept));
594_GL_CXXALIASWARN1 (strpbrk, char const *,
595 (char const *__s, char const *__accept));
596# elif __GLIBC__ >= 2
597_GL_CXXALIASWARN (strpbrk);
598# endif
599# if defined GNULIB_POSIXCHECK
600/* strpbrk() assumes the second argument is a list of single-byte characters.
601 Even in this simple case, it does not work with multibyte strings if the
602 locale encoding is GB18030 and one of the characters to be searched is a
603 digit. */
604# undef strpbrk
605_GL_WARN_ON_USE_CXX (strpbrk,
606 const char *, char *, (const char *, const char *),
607 "strpbrk cannot work correctly on character strings "
608 "in multibyte locales - "
609 "use mbspbrk if you care about internationalization");
610# endif
611#elif defined GNULIB_POSIXCHECK
612# undef strpbrk
613# if HAVE_RAW_DECL_STRPBRK
614_GL_WARN_ON_USE_CXX (strpbrk,
615 const char *, char *, (const char *, const char *),
616 "strpbrk is unportable - "
617 "use gnulib module strpbrk for portability");
618# endif
619#endif
620
621#if defined GNULIB_POSIXCHECK
622/* strspn() assumes the second argument is a list of single-byte characters.
623 Even in this simple case, it cannot work with multibyte strings. */
624# undef strspn
625/* Assume strspn is always declared. */
626_GL_WARN_ON_USE (strspn, "strspn cannot work correctly on character strings "
627 "in multibyte locales - "
628 "use mbsspn if you care about internationalization");
629#endif
630
631#if defined GNULIB_POSIXCHECK
632/* strrchr() does not work with multibyte strings if the locale encoding is
633 GB18030 and the character to be searched is a digit. */
634# undef strrchr
635/* Assume strrchr is always declared. */
636_GL_WARN_ON_USE_CXX (strrchr,
637 const char *, char *, (const char *, int),
638 "strrchr cannot work correctly on character strings "
639 "in some multibyte locales - "
640 "use mbsrchr if you care about internationalization");
641#endif
642
643/* Search the next delimiter (char listed in DELIM) starting at *STRINGP.
644 If one is found, overwrite it with a NUL, and advance *STRINGP
645 to point to the next char after it. Otherwise, set *STRINGP to NULL.
646 If *STRINGP was already NULL, nothing happens.
647 Return the old value of *STRINGP.
648
649 This is a variant of strtok() that is multithread-safe and supports
650 empty fields.
651
652 Caveat: It modifies the original string.
653 Caveat: These functions cannot be used on constant strings.
654 Caveat: The identity of the delimiting character is lost.
655 Caveat: It doesn't work with multibyte strings unless all of the delimiter
656 characters are ASCII characters < 0x30.
657
658 See also strtok_r(). */
659#if @GNULIB_STRSEP@
660# if ! @HAVE_STRSEP@
661_GL_FUNCDECL_SYS (strsep, char *,
662 (char **restrict __stringp, char const *restrict __delim)
663 _GL_ARG_NONNULL ((1, 2)));
664# endif
665_GL_CXXALIAS_SYS (strsep, char *,
666 (char **restrict __stringp, char const *restrict __delim));
667_GL_CXXALIASWARN (strsep);
668# if defined GNULIB_POSIXCHECK
669# undef strsep
670_GL_WARN_ON_USE (strsep, "strsep cannot work correctly on character strings "
671 "in multibyte locales - "
672 "use mbssep if you care about internationalization");
673# endif
674#elif defined GNULIB_POSIXCHECK
675# undef strsep
676# if HAVE_RAW_DECL_STRSEP
677_GL_WARN_ON_USE (strsep, "strsep is unportable - "
678 "use gnulib module strsep for portability");
679# endif
680#endif
681
682#if @GNULIB_STRSTR@
683# if @REPLACE_STRSTR@
684# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
685# define strstr rpl_strstr
686# endif
687_GL_FUNCDECL_RPL (strstr, char *, (const char *haystack, const char *needle)
688 _GL_ATTRIBUTE_PURE
689 _GL_ARG_NONNULL ((1, 2)));
690_GL_CXXALIAS_RPL (strstr, char *, (const char *haystack, const char *needle));
691# else
692 /* On some systems, this function is defined as an overloaded function:
693 extern "C++" { const char * strstr (const char *, const char *); }
694 extern "C++" { char * strstr (char *, const char *); } */
695_GL_CXXALIAS_SYS_CAST2 (strstr,
696 char *, (const char *haystack, const char *needle),
697 const char *, (const char *haystack, const char *needle));
698# endif
699# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
700 && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
701_GL_CXXALIASWARN1 (strstr, char *, (char *haystack, const char *needle));
702_GL_CXXALIASWARN1 (strstr, const char *,
703 (const char *haystack, const char *needle));
704# elif __GLIBC__ >= 2
705_GL_CXXALIASWARN (strstr);
706# endif
707#elif defined GNULIB_POSIXCHECK
708/* strstr() does not work with multibyte strings if the locale encoding is
709 different from UTF-8:
710 POSIX says that it operates on "strings", and "string" in POSIX is defined
711 as a sequence of bytes, not of characters. */
712# undef strstr
713/* Assume strstr is always declared. */
714_GL_WARN_ON_USE (strstr, "strstr is quadratic on many systems, and cannot "
715 "work correctly on character strings in most "
716 "multibyte locales - "
717 "use mbsstr if you care about internationalization, "
718 "or use strstr if you care about speed");
719#endif
720
721/* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive
722 comparison. */
723#if @GNULIB_STRCASESTR@
724# if @REPLACE_STRCASESTR@
725# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
726# define strcasestr rpl_strcasestr
727# endif
728_GL_FUNCDECL_RPL (strcasestr, char *,
729 (const char *haystack, const char *needle)
730 _GL_ATTRIBUTE_PURE
731 _GL_ARG_NONNULL ((1, 2)));
732_GL_CXXALIAS_RPL (strcasestr, char *,
733 (const char *haystack, const char *needle));
734# else
735# if ! @HAVE_STRCASESTR@
736_GL_FUNCDECL_SYS (strcasestr, char *,
737 (const char *haystack, const char *needle)
738 _GL_ATTRIBUTE_PURE
739 _GL_ARG_NONNULL ((1, 2)));
740# endif
741 /* On some systems, this function is defined as an overloaded function:
742 extern "C++" { const char * strcasestr (const char *, const char *); }
743 extern "C++" { char * strcasestr (char *, const char *); } */
744_GL_CXXALIAS_SYS_CAST2 (strcasestr,
745 char *, (const char *haystack, const char *needle),
746 const char *, (const char *haystack, const char *needle));
747# endif
748# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
749 && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
750_GL_CXXALIASWARN1 (strcasestr, char *, (char *haystack, const char *needle));
751_GL_CXXALIASWARN1 (strcasestr, const char *,
752 (const char *haystack, const char *needle));
753# else
754_GL_CXXALIASWARN (strcasestr);
755# endif
756#elif defined GNULIB_POSIXCHECK
757/* strcasestr() does not work with multibyte strings:
758 It is a glibc extension, and glibc implements it only for unibyte
759 locales. */
760# undef strcasestr
761# if HAVE_RAW_DECL_STRCASESTR
762_GL_WARN_ON_USE (strcasestr, "strcasestr does work correctly on character "
763 "strings in multibyte locales - "
764 "use mbscasestr if you care about "
765 "internationalization, or use c-strcasestr if you want "
766 "a locale independent function");
767# endif
768#endif
769
770/* Parse S into tokens separated by characters in DELIM.
771 If S is NULL, the saved pointer in SAVE_PTR is used as
772 the next starting point. For example:
773 char s[] = "-abc-=-def";
774 char *sp;
775 x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def"
776 x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL
777 x = strtok_r(NULL, "=", &sp); // x = NULL
778 // s = "abc\0-def\0"
779
780 This is a variant of strtok() that is multithread-safe.
781
782 For the POSIX documentation for this function, see:
783 https://pubs.opengroup.org/onlinepubs/9699919799/functions/strtok.html
784
785 Caveat: It modifies the original string.
786 Caveat: These functions cannot be used on constant strings.
787 Caveat: The identity of the delimiting character is lost.
788 Caveat: It doesn't work with multibyte strings unless all of the delimiter
789 characters are ASCII characters < 0x30.
790
791 See also strsep(). */
792#if @GNULIB_STRTOK_R@
793# if @REPLACE_STRTOK_R@
794# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
795# undef strtok_r
796# define strtok_r rpl_strtok_r
797# endif
798_GL_FUNCDECL_RPL (strtok_r, char *,
799 (char *restrict s, char const *restrict delim,
800 char **restrict save_ptr)
801 _GL_ARG_NONNULL ((2, 3)));
802_GL_CXXALIAS_RPL (strtok_r, char *,
803 (char *restrict s, char const *restrict delim,
804 char **restrict save_ptr));
805# else
806# if @UNDEFINE_STRTOK_R@ || defined GNULIB_POSIXCHECK
807# undef strtok_r
808# endif
809# if ! @HAVE_DECL_STRTOK_R@
810_GL_FUNCDECL_SYS (strtok_r, char *,
811 (char *restrict s, char const *restrict delim,
812 char **restrict save_ptr)
813 _GL_ARG_NONNULL ((2, 3)));
814# endif
815_GL_CXXALIAS_SYS (strtok_r, char *,
816 (char *restrict s, char const *restrict delim,
817 char **restrict save_ptr));
818# endif
819_GL_CXXALIASWARN (strtok_r);
820# if defined GNULIB_POSIXCHECK
821_GL_WARN_ON_USE (strtok_r, "strtok_r cannot work correctly on character "
822 "strings in multibyte locales - "
823 "use mbstok_r if you care about internationalization");
824# endif
825#elif defined GNULIB_POSIXCHECK
826# undef strtok_r
827# if HAVE_RAW_DECL_STRTOK_R
828_GL_WARN_ON_USE (strtok_r, "strtok_r is unportable - "
829 "use gnulib module strtok_r for portability");
830# endif
831#endif
832
833
834/* The following functions are not specified by POSIX. They are gnulib
835 extensions. */
836
837#if @GNULIB_MBSLEN@
838/* Return the number of multibyte characters in the character string STRING.
839 This considers multibyte characters, unlike strlen, which counts bytes. */
840# ifdef __MirBSD__ /* MirBSD defines mbslen as a macro. Override it. */
841# undef mbslen
842# endif
843# if @HAVE_MBSLEN@ /* AIX, OSF/1, MirBSD define mbslen already in libc. */
844# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
845# define mbslen rpl_mbslen
846# endif
847_GL_FUNCDECL_RPL (mbslen, size_t, (const char *string)
848 _GL_ATTRIBUTE_PURE
849 _GL_ARG_NONNULL ((1)));
850_GL_CXXALIAS_RPL (mbslen, size_t, (const char *string));
851# else
852_GL_FUNCDECL_SYS (mbslen, size_t, (const char *string)
853 _GL_ATTRIBUTE_PURE
854 _GL_ARG_NONNULL ((1)));
855_GL_CXXALIAS_SYS (mbslen, size_t, (const char *string));
856# endif
857_GL_CXXALIASWARN (mbslen);
858#endif
859
860#if @GNULIB_MBSNLEN@
861/* Return the number of multibyte characters in the character string starting
862 at STRING and ending at STRING + LEN. */
863_GL_EXTERN_C size_t mbsnlen (const char *string, size_t len)
864 _GL_ATTRIBUTE_PURE
865 _GL_ARG_NONNULL ((1));
866#endif
867
868#if @GNULIB_MBSCHR@
869/* Locate the first single-byte character C in the character string STRING,
870 and return a pointer to it. Return NULL if C is not found in STRING.
871 Unlike strchr(), this function works correctly in multibyte locales with
872 encodings such as GB18030. */
873# if defined __hpux
874# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
875# define mbschr rpl_mbschr /* avoid collision with HP-UX function */
876# endif
877_GL_FUNCDECL_RPL (mbschr, char *, (const char *string, int c)
878 _GL_ATTRIBUTE_PURE
879 _GL_ARG_NONNULL ((1)));
880_GL_CXXALIAS_RPL (mbschr, char *, (const char *string, int c));
881# else
882_GL_FUNCDECL_SYS (mbschr, char *, (const char *string, int c)
883 _GL_ATTRIBUTE_PURE
884 _GL_ARG_NONNULL ((1)));
885_GL_CXXALIAS_SYS (mbschr, char *, (const char *string, int c));
886# endif
887_GL_CXXALIASWARN (mbschr);
888#endif
889
890#if @GNULIB_MBSRCHR@
891/* Locate the last single-byte character C in the character string STRING,
892 and return a pointer to it. Return NULL if C is not found in STRING.
893 Unlike strrchr(), this function works correctly in multibyte locales with
894 encodings such as GB18030. */
895# if defined __hpux || defined __INTERIX
896# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
897# define mbsrchr rpl_mbsrchr /* avoid collision with system function */
898# endif
899_GL_FUNCDECL_RPL (mbsrchr, char *, (const char *string, int c)
900 _GL_ATTRIBUTE_PURE
901 _GL_ARG_NONNULL ((1)));
902_GL_CXXALIAS_RPL (mbsrchr, char *, (const char *string, int c));
903# else
904_GL_FUNCDECL_SYS (mbsrchr, char *, (const char *string, int c)
905 _GL_ATTRIBUTE_PURE
906 _GL_ARG_NONNULL ((1)));
907_GL_CXXALIAS_SYS (mbsrchr, char *, (const char *string, int c));
908# endif
909_GL_CXXALIASWARN (mbsrchr);
910#endif
911
912#if @GNULIB_MBSSTR@
913/* Find the first occurrence of the character string NEEDLE in the character
914 string HAYSTACK. Return NULL if NEEDLE is not found in HAYSTACK.
915 Unlike strstr(), this function works correctly in multibyte locales with
916 encodings different from UTF-8. */
917_GL_EXTERN_C char * mbsstr (const char *haystack, const char *needle)
918 _GL_ATTRIBUTE_PURE
919 _GL_ARG_NONNULL ((1, 2));
920#endif
921
922#if @GNULIB_MBSCASECMP@
923/* Compare the character strings S1 and S2, ignoring case, returning less than,
924 equal to or greater than zero if S1 is lexicographically less than, equal to
925 or greater than S2.
926 Note: This function may, in multibyte locales, return 0 for strings of
927 different lengths!
928 Unlike strcasecmp(), this function works correctly in multibyte locales. */
929_GL_EXTERN_C int mbscasecmp (const char *s1, const char *s2)
930 _GL_ATTRIBUTE_PURE
931 _GL_ARG_NONNULL ((1, 2));
932#endif
933
934#if @GNULIB_MBSNCASECMP@
935/* Compare the initial segment of the character string S1 consisting of at most
936 N characters with the initial segment of the character string S2 consisting
937 of at most N characters, ignoring case, returning less than, equal to or
938 greater than zero if the initial segment of S1 is lexicographically less
939 than, equal to or greater than the initial segment of S2.
940 Note: This function may, in multibyte locales, return 0 for initial segments
941 of different lengths!
942 Unlike strncasecmp(), this function works correctly in multibyte locales.
943 But beware that N is not a byte count but a character count! */
944_GL_EXTERN_C int mbsncasecmp (const char *s1, const char *s2, size_t n)
945 _GL_ATTRIBUTE_PURE
946 _GL_ARG_NONNULL ((1, 2));
947#endif
948
949#if @GNULIB_MBSPCASECMP@
950/* Compare the initial segment of the character string STRING consisting of
951 at most mbslen (PREFIX) characters with the character string PREFIX,
952 ignoring case. If the two match, return a pointer to the first byte
953 after this prefix in STRING. Otherwise, return NULL.
954 Note: This function may, in multibyte locales, return non-NULL if STRING
955 is of smaller length than PREFIX!
956 Unlike strncasecmp(), this function works correctly in multibyte
957 locales. */
958_GL_EXTERN_C char * mbspcasecmp (const char *string, const char *prefix)
959 _GL_ATTRIBUTE_PURE
960 _GL_ARG_NONNULL ((1, 2));
961#endif
962
963#if @GNULIB_MBSCASESTR@
964/* Find the first occurrence of the character string NEEDLE in the character
965 string HAYSTACK, using case-insensitive comparison.
966 Note: This function may, in multibyte locales, return success even if
967 strlen (haystack) < strlen (needle) !
968 Unlike strcasestr(), this function works correctly in multibyte locales. */
969_GL_EXTERN_C char * mbscasestr (const char *haystack, const char *needle)
970 _GL_ATTRIBUTE_PURE
971 _GL_ARG_NONNULL ((1, 2));
972#endif
973
974#if @GNULIB_MBSCSPN@
975/* Find the first occurrence in the character string STRING of any character
976 in the character string ACCEPT. Return the number of bytes from the
977 beginning of the string to this occurrence, or to the end of the string
978 if none exists.
979 Unlike strcspn(), this function works correctly in multibyte locales. */
980_GL_EXTERN_C size_t mbscspn (const char *string, const char *accept)
981 _GL_ATTRIBUTE_PURE
982 _GL_ARG_NONNULL ((1, 2));
983#endif
984
985#if @GNULIB_MBSPBRK@
986/* Find the first occurrence in the character string STRING of any character
987 in the character string ACCEPT. Return the pointer to it, or NULL if none
988 exists.
989 Unlike strpbrk(), this function works correctly in multibyte locales. */
990# if defined __hpux
991# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
992# define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */
993# endif
994_GL_FUNCDECL_RPL (mbspbrk, char *, (const char *string, const char *accept)
995 _GL_ATTRIBUTE_PURE
996 _GL_ARG_NONNULL ((1, 2)));
997_GL_CXXALIAS_RPL (mbspbrk, char *, (const char *string, const char *accept));
998# else
999_GL_FUNCDECL_SYS (mbspbrk, char *, (const char *string, const char *accept)
1000 _GL_ATTRIBUTE_PURE
1001 _GL_ARG_NONNULL ((1, 2)));
1002_GL_CXXALIAS_SYS (mbspbrk, char *, (const char *string, const char *accept));
1003# endif
1004_GL_CXXALIASWARN (mbspbrk);
1005#endif
1006
1007#if @GNULIB_MBSSPN@
1008/* Find the first occurrence in the character string STRING of any character
1009 not in the character string REJECT. Return the number of bytes from the
1010 beginning of the string to this occurrence, or to the end of the string
1011 if none exists.
1012 Unlike strspn(), this function works correctly in multibyte locales. */
1013_GL_EXTERN_C size_t mbsspn (const char *string, const char *reject)
1014 _GL_ATTRIBUTE_PURE
1015 _GL_ARG_NONNULL ((1, 2));
1016#endif
1017
1018#if @GNULIB_MBSSEP@
1019/* Search the next delimiter (multibyte character listed in the character
1020 string DELIM) starting at the character string *STRINGP.
1021 If one is found, overwrite it with a NUL, and advance *STRINGP to point
1022 to the next multibyte character after it. Otherwise, set *STRINGP to NULL.
1023 If *STRINGP was already NULL, nothing happens.
1024 Return the old value of *STRINGP.
1025
1026 This is a variant of mbstok_r() that supports empty fields.
1027
1028 Caveat: It modifies the original string.
1029 Caveat: These functions cannot be used on constant strings.
1030 Caveat: The identity of the delimiting character is lost.
1031
1032 See also mbstok_r(). */
1033_GL_EXTERN_C char * mbssep (char **stringp, const char *delim)
1034 _GL_ARG_NONNULL ((1, 2));
1035#endif
1036
1037#if @GNULIB_MBSTOK_R@
1038/* Parse the character string STRING into tokens separated by characters in
1039 the character string DELIM.
1040 If STRING is NULL, the saved pointer in SAVE_PTR is used as
1041 the next starting point. For example:
1042 char s[] = "-abc-=-def";
1043 char *sp;
1044 x = mbstok_r(s, "-", &sp); // x = "abc", sp = "=-def"
1045 x = mbstok_r(NULL, "-=", &sp); // x = "def", sp = NULL
1046 x = mbstok_r(NULL, "=", &sp); // x = NULL
1047 // s = "abc\0-def\0"
1048
1049 Caveat: It modifies the original string.
1050 Caveat: These functions cannot be used on constant strings.
1051 Caveat: The identity of the delimiting character is lost.
1052
1053 See also mbssep(). */
1054_GL_EXTERN_C char * mbstok_r (char *restrict string, const char *delim,
1055 char **save_ptr)
1056 _GL_ARG_NONNULL ((2, 3));
1057#endif
1058
1059/* Map any int, typically from errno, into an error message. */
1060#if @GNULIB_STRERROR@
1061# if @REPLACE_STRERROR@
1062# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1063# undef strerror
1064# define strerror rpl_strerror
1065# endif
1066_GL_FUNCDECL_RPL (strerror, char *, (int));
1067_GL_CXXALIAS_RPL (strerror, char *, (int));
1068# else
1069_GL_CXXALIAS_SYS (strerror, char *, (int));
1070# endif
1071# if __GLIBC__ >= 2
1072_GL_CXXALIASWARN (strerror);
1073# endif
1074#elif defined GNULIB_POSIXCHECK
1075# undef strerror
1076/* Assume strerror is always declared. */
1077_GL_WARN_ON_USE (strerror, "strerror is unportable - "
1078 "use gnulib module strerror to guarantee non-NULL result");
1079#endif
1080
1081/* Map any int, typically from errno, into an error message. Multithread-safe.
1082 Uses the POSIX declaration, not the glibc declaration. */
1083#if @GNULIB_STRERROR_R@
1084# if @REPLACE_STRERROR_R@
1085# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1086# undef strerror_r
1087# define strerror_r rpl_strerror_r
1088# endif
1089_GL_FUNCDECL_RPL (strerror_r, int, (int errnum, char *buf, size_t buflen)
1090 _GL_ARG_NONNULL ((2)));
1091_GL_CXXALIAS_RPL (strerror_r, int, (int errnum, char *buf, size_t buflen));
1092# else
1093# if !@HAVE_DECL_STRERROR_R@
1094_GL_FUNCDECL_SYS (strerror_r, int, (int errnum, char *buf, size_t buflen)
1095 _GL_ARG_NONNULL ((2)));
1096# endif
1097_GL_CXXALIAS_SYS (strerror_r, int, (int errnum, char *buf, size_t buflen));
1098# endif
1099# if @HAVE_DECL_STRERROR_R@
1100_GL_CXXALIASWARN (strerror_r);
1101# endif
1102#elif defined GNULIB_POSIXCHECK
1103# undef strerror_r
1104# if HAVE_RAW_DECL_STRERROR_R
1105_GL_WARN_ON_USE (strerror_r, "strerror_r is unportable - "
1106 "use gnulib module strerror_r-posix for portability");
1107# endif
1108#endif
1109
1110/* Return the name of the system error code ERRNUM. */
1111#if @GNULIB_STRERRORNAME_NP@
1112# if @REPLACE_STRERRORNAME_NP@
1113# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1114# undef strerrorname_np
1115# define strerrorname_np rpl_strerrorname_np
1116# endif
1117_GL_FUNCDECL_RPL (strerrorname_np, const char *, (int errnum));
1118_GL_CXXALIAS_RPL (strerrorname_np, const char *, (int errnum));
1119# else
1120# if !@HAVE_STRERRORNAME_NP@
1121_GL_FUNCDECL_SYS (strerrorname_np, const char *, (int errnum));
1122# endif
1123_GL_CXXALIAS_SYS (strerrorname_np, const char *, (int errnum));
1124# endif
1125_GL_CXXALIASWARN (strerrorname_np);
1126#elif defined GNULIB_POSIXCHECK
1127# undef strerrorname_np
1128# if HAVE_RAW_DECL_STRERRORNAME_NP
1129_GL_WARN_ON_USE (strerrorname_np, "strerrorname_np is unportable - "
1130 "use gnulib module strerrorname_np for portability");
1131# endif
1132#endif
1133
1134/* Return an abbreviation string for the signal number SIG. */
1135#if @GNULIB_SIGABBREV_NP@
1136# if ! @HAVE_SIGABBREV_NP@
1137_GL_FUNCDECL_SYS (sigabbrev_np, const char *, (int sig));
1138# endif
1139_GL_CXXALIAS_SYS (sigabbrev_np, const char *, (int sig));
1140_GL_CXXALIASWARN (sigabbrev_np);
1141#elif defined GNULIB_POSIXCHECK
1142# undef sigabbrev_np
1143# if HAVE_RAW_DECL_SIGABBREV_NP
1144_GL_WARN_ON_USE (sigabbrev_np, "sigabbrev_np is unportable - "
1145 "use gnulib module sigabbrev_np for portability");
1146# endif
1147#endif
1148
1149/* Return an English description string for the signal number SIG. */
1150#if @GNULIB_SIGDESCR_NP@
1151# if ! @HAVE_SIGDESCR_NP@
1152_GL_FUNCDECL_SYS (sigdescr_np, const char *, (int sig));
1153# endif
1154_GL_CXXALIAS_SYS (sigdescr_np, const char *, (int sig));
1155_GL_CXXALIASWARN (sigdescr_np);
1156#elif defined GNULIB_POSIXCHECK
1157# undef sigdescr_np
1158# if HAVE_RAW_DECL_SIGDESCR_NP
1159_GL_WARN_ON_USE (sigdescr_np, "sigdescr_np is unportable - "
1160 "use gnulib module sigdescr_np for portability");
1161# endif
1162#endif
1163
1164#if @GNULIB_STRSIGNAL@
1165# if @REPLACE_STRSIGNAL@
1166# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1167# define strsignal rpl_strsignal
1168# endif
1169_GL_FUNCDECL_RPL (strsignal, char *, (int __sig));
1170_GL_CXXALIAS_RPL (strsignal, char *, (int __sig));
1171# else
1172# if ! @HAVE_DECL_STRSIGNAL@
1173_GL_FUNCDECL_SYS (strsignal, char *, (int __sig));
1174# endif
1175/* Need to cast, because on Cygwin 1.5.x systems, the return type is
1176 'const char *'. */
1177_GL_CXXALIAS_SYS_CAST (strsignal, char *, (int __sig));
1178# endif
1179_GL_CXXALIASWARN (strsignal);
1180#elif defined GNULIB_POSIXCHECK
1181# undef strsignal
1182# if HAVE_RAW_DECL_STRSIGNAL
1183_GL_WARN_ON_USE (strsignal, "strsignal is unportable - "
1184 "use gnulib module strsignal for portability");
1185# endif
1186#endif
1187
1188#if @GNULIB_STRVERSCMP@
1189# if !@HAVE_STRVERSCMP@
1190_GL_FUNCDECL_SYS (strverscmp, int, (const char *, const char *)
1191 _GL_ATTRIBUTE_PURE
1192 _GL_ARG_NONNULL ((1, 2)));
1193# endif
1194_GL_CXXALIAS_SYS (strverscmp, int, (const char *, const char *));
1195_GL_CXXALIASWARN (strverscmp);
1196#elif defined GNULIB_POSIXCHECK
1197# undef strverscmp
1198# if HAVE_RAW_DECL_STRVERSCMP
1199_GL_WARN_ON_USE (strverscmp, "strverscmp is unportable - "
1200 "use gnulib module strverscmp for portability");
1201# endif
1202#endif
1203
1204
1205#endif /* _@GUARD_PREFIX@_STRING_H */
1206#endif /* _@GUARD_PREFIX@_STRING_H */
1207#endif
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