/* A GNU-like <string.h>.
- Copyright (C) 1995-1996, 2001-2008 Free Software Foundation, Inc.
+ Copyright (C) 1995-1996, 2001-2010 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#ifndef _GL_STRING_H
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+
/* The include_next requires a split double-inclusion guard. */
#@INCLUDE_NEXT@ @NEXT_STRING_H@
#ifndef _GL_STRING_H
#define _GL_STRING_H
+/* NetBSD 5.0 mis-defines NULL. */
+#include <stddef.h>
+
+/* MirBSD defines mbslen as a macro. */
+#if @GNULIB_MBSLEN@ && defined __MirBSD__
+# include <wchar.h>
+#endif
#ifndef __attribute__
/* This feature is available in gcc versions 2.5 and later. */
#endif
-/* The definition of GL_LINK_WARNING is copied here. */
+/* The definition of _GL_ARG_NONNULL is copied here. */
+
+/* The definition of _GL_WARN_ON_USE is copied here. */
#ifdef __cplusplus
#endif
+/* Return the first instance of C within N bytes of S, or NULL. */
+#if @GNULIB_MEMCHR@
+# if @REPLACE_MEMCHR@
+# define memchr rpl_memchr
+extern void *memchr (void const *__s, int __c, size_t __n)
+ __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef memchr
+/* Assume memchr is always declared. */
+_GL_WARN_ON_USE (memchr, "memchr has platform-specific bugs - "
+ "use gnulib module memchr for portability" );
+#endif
+
/* Return the first occurrence of NEEDLE in HAYSTACK. */
#if @GNULIB_MEMMEM@
# if @REPLACE_MEMMEM@
# endif
# if ! @HAVE_DECL_MEMMEM@ || @REPLACE_MEMMEM@
extern void *memmem (void const *__haystack, size_t __haystack_len,
- void const *__needle, size_t __needle_len)
- __attribute__ ((__pure__));
+ void const *__needle, size_t __needle_len)
+ __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 3));
# endif
#elif defined GNULIB_POSIXCHECK
# undef memmem
-# define memmem(a,al,b,bl) \
- (GL_LINK_WARNING ("memmem is unportable and often quadratic - " \
- "use gnulib module memmem-simple for portability, " \
- "and module memmem for speed" ), \
- memmem (a, al, b, bl))
+# if HAVE_RAW_DECL_MEMMEM
+_GL_WARN_ON_USE (memmem, "memmem is unportable and often quadratic - "
+ "use gnulib module memmem-simple for portability, "
+ "and module memmem for speed" );
+# endif
#endif
/* Copy N bytes of SRC to DEST, return pointer to bytes after the
#if @GNULIB_MEMPCPY@
# if ! @HAVE_MEMPCPY@
extern void *mempcpy (void *restrict __dest, void const *restrict __src,
- size_t __n);
+ size_t __n)
+ _GL_ARG_NONNULL ((1, 2));
# endif
#elif defined GNULIB_POSIXCHECK
# undef mempcpy
-# define mempcpy(a,b,n) \
- (GL_LINK_WARNING ("mempcpy is unportable - " \
- "use gnulib module mempcpy for portability"), \
- mempcpy (a, b, n))
+# if HAVE_RAW_DECL_MEMPCPY
+_GL_WARN_ON_USE (mempcpy, "mempcpy is unportable - "
+ "use gnulib module mempcpy for portability");
+# endif
#endif
/* Search backwards through a block for a byte (specified as an int). */
#if @GNULIB_MEMRCHR@
# if ! @HAVE_DECL_MEMRCHR@
extern void *memrchr (void const *, int, size_t)
- __attribute__ ((__pure__));
+ __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef memrchr
-# define memrchr(a,b,c) \
- (GL_LINK_WARNING ("memrchr is unportable - " \
- "use gnulib module memrchr for portability"), \
- memrchr (a, b, c))
+# if HAVE_RAW_DECL_MEMRCHR
+_GL_WARN_ON_USE (memrchr, "memrchr is unportable - "
+ "use gnulib module memrchr for portability");
+# endif
+#endif
+
+/* Find the first occurrence of C in S. More efficient than
+ memchr(S,C,N), at the expense of undefined behavior if C does not
+ occur within N bytes. */
+#if @GNULIB_RAWMEMCHR@
+# if ! @HAVE_RAWMEMCHR@
+extern void *rawmemchr (void const *__s, int __c_in)
+ __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef rawmemchr
+# if HAVE_RAW_DECL_RAWMEMCHR
+_GL_WARN_ON_USE (rawmemchr, "rawmemchr is unportable - "
+ "use gnulib module rawmemchr for portability");
+# endif
#endif
/* Copy SRC to DST, returning the address of the terminating '\0' in DST. */
#if @GNULIB_STPCPY@
# if ! @HAVE_STPCPY@
-extern char *stpcpy (char *restrict __dst, char const *restrict __src);
+extern char *stpcpy (char *restrict __dst, char const *restrict __src)
+ _GL_ARG_NONNULL ((1, 2));
# endif
#elif defined GNULIB_POSIXCHECK
# undef stpcpy
-# define stpcpy(a,b) \
- (GL_LINK_WARNING ("stpcpy is unportable - " \
- "use gnulib module stpcpy for portability"), \
- stpcpy (a, b))
+# if HAVE_RAW_DECL_STPCPY
+_GL_WARN_ON_USE (stpcpy, "stpcpy is unportable - "
+ "use gnulib module stpcpy for portability");
+# endif
#endif
/* Copy no more than N bytes of SRC to DST, returning a pointer past the
# if ! @HAVE_STPNCPY@
# define stpncpy gnu_stpncpy
extern char *stpncpy (char *restrict __dst, char const *restrict __src,
- size_t __n);
+ size_t __n)
+ _GL_ARG_NONNULL ((1, 2));
# endif
#elif defined GNULIB_POSIXCHECK
# undef stpncpy
-# define stpncpy(a,b,n) \
- (GL_LINK_WARNING ("stpncpy is unportable - " \
- "use gnulib module stpncpy for portability"), \
- stpncpy (a, b, n))
+# if HAVE_RAW_DECL_STPNCPY
+_GL_WARN_ON_USE (stpncpy, "stpncpy is unportable - "
+ "use gnulib module stpncpy for portability");
+# endif
#endif
#if defined GNULIB_POSIXCHECK
/* strchr() does not work with multibyte strings if the locale encoding is
GB18030 and the character to be searched is a digit. */
# undef strchr
-# define strchr(s,c) \
- (GL_LINK_WARNING ("strchr cannot work correctly on character strings " \
- "in some multibyte locales - " \
- "use mbschr if you care about internationalization"), \
- strchr (s, c))
+/* Assume strchr is always declared. */
+_GL_WARN_ON_USE (strchr, "strchr cannot work correctly on character strings "
+ "in some multibyte locales - "
+ "use mbschr if you care about internationalization");
#endif
/* Find the first occurrence of C in S or the final NUL byte. */
#if @GNULIB_STRCHRNUL@
# if ! @HAVE_STRCHRNUL@
extern char *strchrnul (char const *__s, int __c_in)
- __attribute__ ((__pure__));
+ __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef strchrnul
-# define strchrnul(a,b) \
- (GL_LINK_WARNING ("strchrnul is unportable - " \
- "use gnulib module strchrnul for portability"), \
- strchrnul (a, b))
+# if HAVE_RAW_DECL_STRCHRNUL
+_GL_WARN_ON_USE (strchrnul, "strchrnul is unportable - "
+ "use gnulib module strchrnul for portability");
+# endif
#endif
/* Duplicate S, returning an identical malloc'd string. */
#if @GNULIB_STRDUP@
-# if ! @HAVE_DECL_STRDUP@ && ! defined strdup
-extern char *strdup (char const *__s);
+# if @REPLACE_STRDUP@
+# undef strdup
+# define strdup rpl_strdup
+# endif
+# if !(@HAVE_DECL_STRDUP@ || defined strdup) || @REPLACE_STRDUP@
+extern char *strdup (char const *__s) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef strdup
-# define strdup(a) \
- (GL_LINK_WARNING ("strdup is unportable - " \
- "use gnulib module strdup for portability"), \
- strdup (a))
+# if HAVE_RAW_DECL_STRDUP
+_GL_WARN_ON_USE (strdup, "strdup is unportable - "
+ "use gnulib module strdup for portability");
+# endif
#endif
/* Return a newly allocated copy of at most N bytes of STRING. */
#if @GNULIB_STRNDUP@
-# if ! @HAVE_STRNDUP@
+# if @REPLACE_STRNDUP@
# undef strndup
# define strndup rpl_strndup
# endif
-# if ! @HAVE_STRNDUP@ || ! @HAVE_DECL_STRNDUP@
-extern char *strndup (char const *__string, size_t __n);
+# if @REPLACE_STRNDUP@ || ! @HAVE_DECL_STRNDUP@
+extern char *strndup (char const *__string, size_t __n) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef strndup
-# define strndup(a,n) \
- (GL_LINK_WARNING ("strndup is unportable - " \
- "use gnulib module strndup for portability"), \
- strndup (a, n))
+# if HAVE_RAW_DECL_STRNDUP
+_GL_WARN_ON_USE (strndup, "strndup is unportable - "
+ "use gnulib module strndup for portability");
+# endif
#endif
/* Find the length (number of bytes) of STRING, but scan at most
#if @GNULIB_STRNLEN@
# if ! @HAVE_DECL_STRNLEN@
extern size_t strnlen (char const *__string, size_t __maxlen)
- __attribute__ ((__pure__));
+ __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef strnlen
-# define strnlen(a,n) \
- (GL_LINK_WARNING ("strnlen is unportable - " \
- "use gnulib module strnlen for portability"), \
- strnlen (a, n))
+# if HAVE_RAW_DECL_STRNLEN
+_GL_WARN_ON_USE (strnlen, "strnlen is unportable - "
+ "use gnulib module strnlen for portability");
+# endif
#endif
#if defined GNULIB_POSIXCHECK
locale encoding is GB18030 and one of the characters to be searched is a
digit. */
# undef strcspn
-# define strcspn(s,a) \
- (GL_LINK_WARNING ("strcspn cannot work correctly on character strings " \
- "in multibyte locales - " \
- "use mbscspn if you care about internationalization"), \
- strcspn (s, a))
+/* Assume strcspn is always declared. */
+_GL_WARN_ON_USE (strcspn, "strcspn cannot work correctly on character strings "
+ "in multibyte locales - "
+ "use mbscspn if you care about internationalization");
#endif
/* Find the first occurrence in S of any character in ACCEPT. */
#if @GNULIB_STRPBRK@
# if ! @HAVE_STRPBRK@
extern char *strpbrk (char const *__s, char const *__accept)
- __attribute__ ((__pure__));
+ __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 2));
# endif
# if defined GNULIB_POSIXCHECK
/* strpbrk() assumes the second argument is a list of single-byte characters.
locale encoding is GB18030 and one of the characters to be searched is a
digit. */
# undef strpbrk
-# define strpbrk(s,a) \
- (GL_LINK_WARNING ("strpbrk cannot work correctly on character strings " \
- "in multibyte locales - " \
- "use mbspbrk if you care about internationalization"), \
- strpbrk (s, a))
+_GL_WARN_ON_USE (strpbrk, "strpbrk cannot work correctly on character strings "
+ "in multibyte locales - "
+ "use mbspbrk if you care about internationalization");
# endif
#elif defined GNULIB_POSIXCHECK
# undef strpbrk
-# define strpbrk(s,a) \
- (GL_LINK_WARNING ("strpbrk is unportable - " \
- "use gnulib module strpbrk for portability"), \
- strpbrk (s, a))
+# if HAVE_RAW_DECL_STRPBRK
+_GL_WARN_ON_USE (strpbrk, "strpbrk is unportable - "
+ "use gnulib module strpbrk for portability");
+# endif
#endif
#if defined GNULIB_POSIXCHECK
/* strspn() assumes the second argument is a list of single-byte characters.
Even in this simple case, it cannot work with multibyte strings. */
# undef strspn
-# define strspn(s,a) \
- (GL_LINK_WARNING ("strspn cannot work correctly on character strings " \
- "in multibyte locales - " \
- "use mbsspn if you care about internationalization"), \
- strspn (s, a))
+/* Assume strspn is always declared. */
+_GL_WARN_ON_USE (strspn, "strspn cannot work correctly on character strings "
+ "in multibyte locales - "
+ "use mbsspn if you care about internationalization");
#endif
#if defined GNULIB_POSIXCHECK
/* strrchr() does not work with multibyte strings if the locale encoding is
GB18030 and the character to be searched is a digit. */
# undef strrchr
-# define strrchr(s,c) \
- (GL_LINK_WARNING ("strrchr cannot work correctly on character strings " \
- "in some multibyte locales - " \
- "use mbsrchr if you care about internationalization"), \
- strrchr (s, c))
+/* Assume strrchr is always declared. */
+_GL_WARN_ON_USE (strrchr, "strrchr cannot work correctly on character strings "
+ "in some multibyte locales - "
+ "use mbsrchr if you care about internationalization");
#endif
/* Search the next delimiter (char listed in DELIM) starting at *STRINGP.
See also strtok_r(). */
#if @GNULIB_STRSEP@
# if ! @HAVE_STRSEP@
-extern char *strsep (char **restrict __stringp, char const *restrict __delim);
+extern char *strsep (char **restrict __stringp, char const *restrict __delim)
+ _GL_ARG_NONNULL ((1, 2));
# endif
# if defined GNULIB_POSIXCHECK
# undef strsep
-# define strsep(s,d) \
- (GL_LINK_WARNING ("strsep cannot work correctly on character strings " \
- "in multibyte locales - " \
- "use mbssep if you care about internationalization"), \
- strsep (s, d))
+_GL_WARN_ON_USE (strsep, "strsep cannot work correctly on character strings "
+ "in multibyte locales - "
+ "use mbssep if you care about internationalization");
# endif
#elif defined GNULIB_POSIXCHECK
# undef strsep
-# define strsep(s,d) \
- (GL_LINK_WARNING ("strsep is unportable - " \
- "use gnulib module strsep for portability"), \
- strsep (s, d))
+# if HAVE_RAW_DECL_STRSEP
+_GL_WARN_ON_USE (strsep, "strsep is unportable - "
+ "use gnulib module strsep for portability");
+# endif
#endif
#if @GNULIB_STRSTR@
# if @REPLACE_STRSTR@
# define strstr rpl_strstr
-char *strstr (const char *haystack, const char *needle)
- __attribute__ ((__pure__));
+extern char *strstr (const char *haystack, const char *needle)
+ __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 2));
# endif
#elif defined GNULIB_POSIXCHECK
/* strstr() does not work with multibyte strings if the locale encoding is
POSIX says that it operates on "strings", and "string" in POSIX is defined
as a sequence of bytes, not of characters. */
# undef strstr
-# define strstr(a,b) \
- (GL_LINK_WARNING ("strstr is quadratic on many systems, and cannot " \
- "work correctly on character strings in most " \
- "multibyte locales - " \
- "use mbsstr if you care about internationalization, " \
- "or use strstr if you care about speed"), \
- strstr (a, b))
+/* Assume strstr is always declared. */
+_GL_WARN_ON_USE (strstr, "strstr is quadratic on many systems, and cannot "
+ "work correctly on character strings in most "
+ "multibyte locales - "
+ "use mbsstr if you care about internationalization, "
+ "or use strstr if you care about speed");
#endif
/* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive
# endif
# if ! @HAVE_STRCASESTR@ || @REPLACE_STRCASESTR@
extern char *strcasestr (const char *haystack, const char *needle)
- __attribute__ ((__pure__));
+ __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 2));
# endif
#elif defined GNULIB_POSIXCHECK
/* strcasestr() does not work with multibyte strings:
It is a glibc extension, and glibc implements it only for unibyte
locales. */
# undef strcasestr
-# define strcasestr(a,b) \
- (GL_LINK_WARNING ("strcasestr does work correctly on character strings " \
- "in multibyte locales - " \
- "use mbscasestr if you care about " \
- "internationalization, or use c-strcasestr if you want " \
- "a locale independent function"), \
- strcasestr (a, b))
+# if HAVE_RAW_DECL_STRCASESTR
+_GL_WARN_ON_USE (strcasestr, "strcasestr does work correctly on character "
+ "strings in multibyte locales - "
+ "use mbscasestr if you care about "
+ "internationalization, or use c-strcasestr if you want "
+ "a locale independent function");
+# endif
#endif
/* Parse S into tokens separated by characters in DELIM.
If S is NULL, the saved pointer in SAVE_PTR is used as
the next starting point. For example:
- char s[] = "-abc-=-def";
- char *sp;
- x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def"
- x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL
- x = strtok_r(NULL, "=", &sp); // x = NULL
- // s = "abc\0-def\0"
+ char s[] = "-abc-=-def";
+ char *sp;
+ x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def"
+ x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL
+ x = strtok_r(NULL, "=", &sp); // x = NULL
+ // s = "abc\0-def\0"
This is a variant of strtok() that is multithread-safe.
See also strsep(). */
#if @GNULIB_STRTOK_R@
-# if ! @HAVE_DECL_STRTOK_R@
+# if @REPLACE_STRTOK_R@
+# undef strtok_r
+# define strtok_r rpl_strtok_r
+# elif @UNDEFINE_STRTOK_R@ || defined GNULIB_POSIXCHECK
+# undef strtok_r
+# endif
+# if ! @HAVE_DECL_STRTOK_R@ || @REPLACE_STRTOK_R@
extern char *strtok_r (char *restrict s, char const *restrict delim,
- char **restrict save_ptr);
+ char **restrict save_ptr)
+ _GL_ARG_NONNULL ((2, 3));
# endif
# if defined GNULIB_POSIXCHECK
-# undef strtok_r
-# define strtok_r(s,d,p) \
- (GL_LINK_WARNING ("strtok_r cannot work correctly on character strings " \
- "in multibyte locales - " \
- "use mbstok_r if you care about internationalization"), \
- strtok_r (s, d, p))
+_GL_WARN_ON_USE (strtok_r, "strtok_r cannot work correctly on character "
+ "strings in multibyte locales - "
+ "use mbstok_r if you care about internationalization");
# endif
#elif defined GNULIB_POSIXCHECK
# undef strtok_r
-# define strtok_r(s,d,p) \
- (GL_LINK_WARNING ("strtok_r is unportable - " \
- "use gnulib module strtok_r for portability"), \
- strtok_r (s, d, p))
+# if HAVE_RAW_DECL_STRTOK_R
+_GL_WARN_ON_USE (strtok_r, "strtok_r is unportable - "
+ "use gnulib module strtok_r for portability");
+# endif
#endif
#if @GNULIB_MBSLEN@
/* Return the number of multibyte characters in the character string STRING.
This considers multibyte characters, unlike strlen, which counts bytes. */
-extern size_t mbslen (const char *string);
+# ifdef __MirBSD__ /* MirBSD defines mbslen as a macro. Override it. */
+# undef mbslen
+# endif
+# if @HAVE_MBSLEN@ /* AIX, OSF/1, MirBSD define mbslen already in libc. */
+# define mbslen rpl_mbslen
+# endif
+extern size_t mbslen (const char *string) _GL_ARG_NONNULL ((1));
#endif
#if @GNULIB_MBSNLEN@
/* Return the number of multibyte characters in the character string starting
at STRING and ending at STRING + LEN. */
-extern size_t mbsnlen (const char *string, size_t len);
+extern size_t mbsnlen (const char *string, size_t len) _GL_ARG_NONNULL ((1));
#endif
#if @GNULIB_MBSCHR@
Unlike strchr(), this function works correctly in multibyte locales with
encodings such as GB18030. */
# define mbschr rpl_mbschr /* avoid collision with HP-UX function */
-extern char * mbschr (const char *string, int c);
+extern char * mbschr (const char *string, int c) _GL_ARG_NONNULL ((1));
#endif
#if @GNULIB_MBSRCHR@
Unlike strrchr(), this function works correctly in multibyte locales with
encodings such as GB18030. */
# define mbsrchr rpl_mbsrchr /* avoid collision with HP-UX function */
-extern char * mbsrchr (const char *string, int c);
+extern char * mbsrchr (const char *string, int c) _GL_ARG_NONNULL ((1));
#endif
#if @GNULIB_MBSSTR@
string HAYSTACK. Return NULL if NEEDLE is not found in HAYSTACK.
Unlike strstr(), this function works correctly in multibyte locales with
encodings different from UTF-8. */
-extern char * mbsstr (const char *haystack, const char *needle);
+extern char * mbsstr (const char *haystack, const char *needle)
+ _GL_ARG_NONNULL ((1, 2));
#endif
#if @GNULIB_MBSCASECMP@
Note: This function may, in multibyte locales, return 0 for strings of
different lengths!
Unlike strcasecmp(), this function works correctly in multibyte locales. */
-extern int mbscasecmp (const char *s1, const char *s2);
+extern int mbscasecmp (const char *s1, const char *s2)
+ _GL_ARG_NONNULL ((1, 2));
#endif
#if @GNULIB_MBSNCASECMP@
of different lengths!
Unlike strncasecmp(), this function works correctly in multibyte locales.
But beware that N is not a byte count but a character count! */
-extern int mbsncasecmp (const char *s1, const char *s2, size_t n);
+extern int mbsncasecmp (const char *s1, const char *s2, size_t n)
+ _GL_ARG_NONNULL ((1, 2));
#endif
#if @GNULIB_MBSPCASECMP@
smaller length than PREFIX!
Unlike strncasecmp(), this function works correctly in multibyte
locales. */
-extern char * mbspcasecmp (const char *string, const char *prefix);
+extern char * mbspcasecmp (const char *string, const char *prefix)
+ _GL_ARG_NONNULL ((1, 2));
#endif
#if @GNULIB_MBSCASESTR@
Note: This function may, in multibyte locales, return success even if
strlen (haystack) < strlen (needle) !
Unlike strcasestr(), this function works correctly in multibyte locales. */
-extern char * mbscasestr (const char *haystack, const char *needle);
+extern char * mbscasestr (const char *haystack, const char *needle)
+ _GL_ARG_NONNULL ((1, 2));
#endif
#if @GNULIB_MBSCSPN@
beginning of the string to this occurrence, or to the end of the string
if none exists.
Unlike strcspn(), this function works correctly in multibyte locales. */
-extern size_t mbscspn (const char *string, const char *accept);
+extern size_t mbscspn (const char *string, const char *accept)
+ _GL_ARG_NONNULL ((1, 2));
#endif
#if @GNULIB_MBSPBRK@
exists.
Unlike strpbrk(), this function works correctly in multibyte locales. */
# define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */
-extern char * mbspbrk (const char *string, const char *accept);
+extern char * mbspbrk (const char *string, const char *accept)
+ _GL_ARG_NONNULL ((1, 2));
#endif
#if @GNULIB_MBSSPN@
beginning of the string to this occurrence, or to the end of the string
if none exists.
Unlike strspn(), this function works correctly in multibyte locales. */
-extern size_t mbsspn (const char *string, const char *reject);
+extern size_t mbsspn (const char *string, const char *reject)
+ _GL_ARG_NONNULL ((1, 2));
#endif
#if @GNULIB_MBSSEP@
Caveat: The identity of the delimiting character is lost.
See also mbstok_r(). */
-extern char * mbssep (char **stringp, const char *delim);
+extern char * mbssep (char **stringp, const char *delim)
+ _GL_ARG_NONNULL ((1, 2));
#endif
#if @GNULIB_MBSTOK_R@
the character string DELIM.
If STRING is NULL, the saved pointer in SAVE_PTR is used as
the next starting point. For example:
- char s[] = "-abc-=-def";
- char *sp;
- x = mbstok_r(s, "-", &sp); // x = "abc", sp = "=-def"
- x = mbstok_r(NULL, "-=", &sp); // x = "def", sp = NULL
- x = mbstok_r(NULL, "=", &sp); // x = NULL
- // s = "abc\0-def\0"
+ char s[] = "-abc-=-def";
+ char *sp;
+ x = mbstok_r(s, "-", &sp); // x = "abc", sp = "=-def"
+ x = mbstok_r(NULL, "-=", &sp); // x = "def", sp = NULL
+ x = mbstok_r(NULL, "=", &sp); // x = NULL
+ // s = "abc\0-def\0"
Caveat: It modifies the original string.
Caveat: These functions cannot be used on constant strings.
Caveat: The identity of the delimiting character is lost.
See also mbssep(). */
-extern char * mbstok_r (char *string, const char *delim, char **save_ptr);
+extern char * mbstok_r (char *string, const char *delim, char **save_ptr)
+ _GL_ARG_NONNULL ((2, 3));
#endif
/* Map any int, typically from errno, into an error message. */
# endif
#elif defined GNULIB_POSIXCHECK
# undef strerror
-# define strerror(e) \
- (GL_LINK_WARNING ("strerror is unportable - " \
- "use gnulib module strerror to guarantee non-NULL result"), \
- strerror (e))
+/* Assume strerror is always declared. */
+_GL_WARN_ON_USE (strerror, "strerror is unportable - "
+ "use gnulib module strerror to guarantee non-NULL result");
#endif
#if @GNULIB_STRSIGNAL@
# endif
#elif defined GNULIB_POSIXCHECK
# undef strsignal
-# define strsignal(a) \
- (GL_LINK_WARNING ("strsignal is unportable - " \
- "use gnulib module strsignal for portability"), \
- strsignal (a))
+# if HAVE_RAW_DECL_STRSIGNAL
+_GL_WARN_ON_USE (strsignal, "strsignal is unportable - "
+ "use gnulib module strsignal for portability");
+# endif
+#endif
+
+#if @GNULIB_STRVERSCMP@
+# if !@HAVE_STRVERSCMP@
+extern int strverscmp (const char *, const char *) _GL_ARG_NONNULL ((1, 2));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strverscmp
+# if HAVE_RAW_DECL_STRVERSCMP
+_GL_WARN_ON_USE (strverscmp, "strverscmp is unportable - "
+ "use gnulib module strverscmp for portability");
+# endif
#endif
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