diff options
Diffstat (limited to 'lib/string.in.h')
-rw-r--r-- | lib/string.in.h | 175 |
1 files changed, 132 insertions, 43 deletions
diff --git a/lib/string.in.h b/lib/string.in.h index b043c7522..3996da9fc 100644 --- a/lib/string.in.h +++ b/lib/string.in.h @@ -1,6 +1,6 @@ /* A GNU-like <string.h>. - Copyright (C) 1995-1996, 2001-2021 Free Software Foundation, Inc. + Copyright (C) 1995-1996, 2001-2022 Free Software Foundation, Inc. This file is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as @@ -47,24 +47,11 @@ /* NetBSD 5.0 mis-defines NULL. */ #include <stddef.h> -/* Get free(). */ -#include <stdlib.h> - /* MirBSD defines mbslen as a macro. */ #if @GNULIB_MBSLEN@ && defined __MirBSD__ # include <wchar.h> #endif -/* The __attribute__ feature is available in gcc versions 2.5 and later. - The attribute __pure__ was added in gcc 2.96. */ -#ifndef _GL_ATTRIBUTE_PURE -# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__ -# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__)) -# else -# define _GL_ATTRIBUTE_PURE /* empty */ -# endif -#endif - /* NetBSD 5.0 declares strsignal in <unistd.h>, not in <string.h>. */ /* But in any case avoid namespace pollution on glibc systems. */ #if (@GNULIB_STRSIGNAL@ || defined GNULIB_POSIXCHECK) && defined __NetBSD__ \ @@ -80,12 +67,90 @@ # include <strings.h> #endif +/* _GL_ATTRIBUTE_DEALLOC (F, I) declares that the function returns pointers + that can be freed by passing them as the Ith argument to the + function F. */ +#ifndef _GL_ATTRIBUTE_DEALLOC +# if __GNUC__ >= 11 +# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i))) +# else +# define _GL_ATTRIBUTE_DEALLOC(f, i) +# endif +#endif + +/* _GL_ATTRIBUTE_DEALLOC_FREE declares that the function returns pointers that + can be freed via 'free'; it can be used only after declaring 'free'. */ +/* Applies to: functions. Cannot be used on inline functions. */ +#ifndef _GL_ATTRIBUTE_DEALLOC_FREE +# define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1) +#endif + +/* _GL_ATTRIBUTE_MALLOC declares that the function returns a pointer to freshly + allocated memory. */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_MALLOC +# if __GNUC__ >= 3 || defined __clang__ +# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__)) +# else +# define _GL_ATTRIBUTE_MALLOC +# endif +#endif + +/* The __attribute__ feature is available in gcc versions 2.5 and later. + The attribute __pure__ was added in gcc 2.96. */ +#ifndef _GL_ATTRIBUTE_PURE +# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__ +# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__)) +# else +# define _GL_ATTRIBUTE_PURE /* empty */ +# endif +#endif + /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ /* The definition of _GL_ARG_NONNULL is copied here. */ /* The definition of _GL_WARN_ON_USE is copied here. */ +/* Make _GL_ATTRIBUTE_DEALLOC_FREE work, even though <stdlib.h> may not have + been included yet. */ +#if @GNULIB_FREE_POSIX@ +# if (@REPLACE_FREE@ && !defined free \ + && !(defined __cplusplus && defined GNULIB_NAMESPACE)) +/* We can't do '#define free rpl_free' here. */ +_GL_EXTERN_C void rpl_free (void *); +# undef _GL_ATTRIBUTE_DEALLOC_FREE +# define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (rpl_free, 1) +# else +# if defined _MSC_VER && !defined free +_GL_EXTERN_C +# if defined _DLL + __declspec (dllimport) +# endif + void __cdecl free (void *); +# else +# if defined __cplusplus && (__GLIBC__ + (__GLIBC_MINOR__ >= 14) > 2) +_GL_EXTERN_C void free (void *) throw (); +# else +_GL_EXTERN_C void free (void *); +# endif +# endif +# endif +#else +# if defined _MSC_VER && !defined free +_GL_EXTERN_C +# if defined _DLL + __declspec (dllimport) +# endif + void __cdecl free (void *); +# else +# if defined __cplusplus && (__GLIBC__ + (__GLIBC_MINOR__ >= 14) > 2) +_GL_EXTERN_C void free (void *) throw (); +# else +_GL_EXTERN_C void free (void *); +# endif +# endif +#endif /* Clear a block of memory. The compiler will not delete a call to this function, even if the block is dead after the call. */ @@ -181,10 +246,11 @@ _GL_CXXALIAS_SYS_CAST2 (memchr, void const *, (void const *__s, int __c, size_t __n)); # endif # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \ - && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) -_GL_CXXALIASWARN1 (memchr, void *, (void *__s, int __c, size_t __n)); + && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \ + || defined __clang__) +_GL_CXXALIASWARN1 (memchr, void *, (void *__s, int __c, size_t __n) throw ()); _GL_CXXALIASWARN1 (memchr, void const *, - (void const *__s, int __c, size_t __n)); + (void const *__s, int __c, size_t __n) throw ()); # elif __GLIBC__ >= 2 _GL_CXXALIASWARN (memchr); # endif @@ -266,9 +332,10 @@ _GL_CXXALIAS_SYS_CAST2 (memrchr, void *, (void const *, int, size_t), void const *, (void const *, int, size_t)); # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \ - && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) -_GL_CXXALIASWARN1 (memrchr, void *, (void *, int, size_t)); -_GL_CXXALIASWARN1 (memrchr, void const *, (void const *, int, size_t)); + && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \ + || defined __clang__) +_GL_CXXALIASWARN1 (memrchr, void *, (void *, int, size_t) throw ()); +_GL_CXXALIASWARN1 (memrchr, void const *, (void const *, int, size_t) throw ()); # else _GL_CXXALIASWARN (memrchr); # endif @@ -296,9 +363,11 @@ _GL_CXXALIAS_SYS_CAST2 (rawmemchr, void *, (void const *__s, int __c_in), void const *, (void const *__s, int __c_in)); # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \ - && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) -_GL_CXXALIASWARN1 (rawmemchr, void *, (void *__s, int __c_in)); -_GL_CXXALIASWARN1 (rawmemchr, void const *, (void const *__s, int __c_in)); + && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \ + || defined __clang__) +_GL_CXXALIASWARN1 (rawmemchr, void *, (void *__s, int __c_in) throw ()); +_GL_CXXALIASWARN1 (rawmemchr, void const *, + (void const *__s, int __c_in) throw ()); # else _GL_CXXALIASWARN (rawmemchr); # endif @@ -400,9 +469,11 @@ _GL_CXXALIAS_SYS_CAST2 (strchrnul, char const *, (char const *__s, int __c_in)); # endif # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \ - && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) -_GL_CXXALIASWARN1 (strchrnul, char *, (char *__s, int __c_in)); -_GL_CXXALIASWARN1 (strchrnul, char const *, (char const *__s, int __c_in)); + && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \ + || defined __clang__) +_GL_CXXALIASWARN1 (strchrnul, char *, (char *__s, int __c_in) throw ()); +_GL_CXXALIASWARN1 (strchrnul, char const *, + (char const *__s, int __c_in) throw ()); # else _GL_CXXALIASWARN (strchrnul); # endif @@ -514,22 +585,35 @@ _GL_WARN_ON_USE (strncat, "strncat is unportable - " # undef strndup # define strndup rpl_strndup # endif -_GL_FUNCDECL_RPL (strndup, char *, (char const *__s, size_t __n) - _GL_ARG_NONNULL ((1))); +_GL_FUNCDECL_RPL (strndup, char *, + (char const *__s, size_t __n) + _GL_ARG_NONNULL ((1)) + _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE); _GL_CXXALIAS_RPL (strndup, char *, (char const *__s, size_t __n)); # else -# if ! @HAVE_DECL_STRNDUP@ -_GL_FUNCDECL_SYS (strndup, char *, (char const *__s, size_t __n) - _GL_ARG_NONNULL ((1))); +# if !@HAVE_DECL_STRNDUP@ || (__GNUC__ >= 11 && !defined strndup) +_GL_FUNCDECL_SYS (strndup, char *, + (char const *__s, size_t __n) + _GL_ARG_NONNULL ((1)) + _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE); # endif _GL_CXXALIAS_SYS (strndup, char *, (char const *__s, size_t __n)); # endif _GL_CXXALIASWARN (strndup); -#elif defined GNULIB_POSIXCHECK -# undef strndup -# if HAVE_RAW_DECL_STRNDUP +#else +# if __GNUC__ >= 11 && !defined strndup +/* For -Wmismatched-dealloc: Associate strndup with free or rpl_free. */ +_GL_FUNCDECL_SYS (strndup, char *, + (char const *__s, size_t __n) + _GL_ARG_NONNULL ((1)) + _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE); +# endif +# if defined GNULIB_POSIXCHECK +# undef strndup +# if HAVE_RAW_DECL_STRNDUP _GL_WARN_ON_USE (strndup, "strndup is unportable - " "use gnulib module strndup for portability"); +# endif # endif #endif @@ -589,10 +673,11 @@ _GL_CXXALIAS_SYS_CAST2 (strpbrk, char *, (char const *__s, char const *__accept), const char *, (char const *__s, char const *__accept)); # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \ - && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) -_GL_CXXALIASWARN1 (strpbrk, char *, (char *__s, char const *__accept)); + && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \ + || defined __clang__) +_GL_CXXALIASWARN1 (strpbrk, char *, (char *__s, char const *__accept) throw ()); _GL_CXXALIASWARN1 (strpbrk, char const *, - (char const *__s, char const *__accept)); + (char const *__s, char const *__accept) throw ()); # elif __GLIBC__ >= 2 _GL_CXXALIASWARN (strpbrk); # endif @@ -697,10 +782,12 @@ _GL_CXXALIAS_SYS_CAST2 (strstr, const char *, (const char *haystack, const char *needle)); # endif # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \ - && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) -_GL_CXXALIASWARN1 (strstr, char *, (char *haystack, const char *needle)); + && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \ + || defined __clang__) +_GL_CXXALIASWARN1 (strstr, char *, + (char *haystack, const char *needle) throw ()); _GL_CXXALIASWARN1 (strstr, const char *, - (const char *haystack, const char *needle)); + (const char *haystack, const char *needle) throw ()); # elif __GLIBC__ >= 2 _GL_CXXALIASWARN (strstr); # endif @@ -746,10 +833,12 @@ _GL_CXXALIAS_SYS_CAST2 (strcasestr, const char *, (const char *haystack, const char *needle)); # endif # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \ - && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) -_GL_CXXALIASWARN1 (strcasestr, char *, (char *haystack, const char *needle)); + && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) \ + || defined __clang__) +_GL_CXXALIASWARN1 (strcasestr, char *, + (char *haystack, const char *needle) throw ()); _GL_CXXALIASWARN1 (strcasestr, const char *, - (const char *haystack, const char *needle)); + (const char *haystack, const char *needle) throw ()); # else _GL_CXXALIASWARN (strcasestr); # endif |