diff options
Diffstat (limited to 'config.h.in')
| -rw-r--r-- | config.h.in | 530 |
1 files changed, 387 insertions, 143 deletions
diff --git a/config.h.in b/config.h.in index da59340..4d2a95a 100644 --- a/config.h.in +++ b/config.h.in @@ -1,5 +1,12 @@ /* config.h.in. Generated from configure.ac by autoheader. */ +/* Witness that <config.h> has been included. */ +#define _GL_CONFIG_H_INCLUDED 1 + + +/* Define if access does not correctly handle trailing slashes. */ +#undef ACCESS_TRAILING_SLASH_BUG + /* Define if building universal (internal helper macro) */ #undef AC_APPLE_UNIVERSAL_BUILD @@ -147,6 +154,9 @@ whether the gnulib module strerror shall be considered present. */ #undef GNULIB_STRERROR +/* Define to 1 when the gnulib module access should be tested. */ +#undef GNULIB_TEST_ACCESS + /* Define to 1 when the gnulib module calloc-gnu should be tested. */ #undef GNULIB_TEST_CALLOC_GNU @@ -259,6 +269,9 @@ /* Define to 1 when the gnulib module getopt-posix should be tested. */ #undef GNULIB_TEST_GETOPT_POSIX +/* Define to 1 when the gnulib module getprogname should be tested. */ +#undef GNULIB_TEST_GETPROGNAME + /* Define to 1 when the gnulib module gettimeofday should be tested. */ #undef GNULIB_TEST_GETTIMEOFDAY @@ -274,6 +287,9 @@ /* Define to 1 when the gnulib module malloc-posix should be tested. */ #undef GNULIB_TEST_MALLOC_POSIX +/* Define to 1 when the gnulib module mbszero should be tested. */ +#undef GNULIB_TEST_MBSZERO + /* Define to 1 when the gnulib module memchr should be tested. */ #undef GNULIB_TEST_MEMCHR @@ -448,6 +464,12 @@ /* Define to 1 if you have the <crtdefs.h> header file. */ #undef HAVE_CRTDEFS_H +/* Define to 1 if bool, true and false work as per C2023. */ +#undef HAVE_C_BOOL + +/* Define to 1 if the static_assert keyword works. */ +#undef HAVE_C_STATIC_ASSERT + /* Define to 1 if C supports variable-length arrays. */ #undef HAVE_C_VARARRAYS @@ -515,6 +537,10 @@ don't. */ #undef HAVE_DECL_GETLINE +/* Define to 1 if you have the declaration of `getw', and to 0 if you don't. + */ +#undef HAVE_DECL_GETW + /* Define to 1 if you have the declaration of `memrchr', and to 0 if you don't. */ #undef HAVE_DECL_MEMRCHR @@ -527,6 +553,10 @@ and to 0 if you don't. */ #undef HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME +/* Define to 1 if you have the declaration of `putw', and to 0 if you don't. + */ +#undef HAVE_DECL_PUTW + /* Define to 1 if you have the declaration of `strdup', and to 0 if you don't. */ #undef HAVE_DECL_STRDUP @@ -560,6 +590,12 @@ /* Define to 1 if you have the `eaccess' function. */ #undef HAVE_EACCESS +/* Define to 1 if you have the `error' function. */ +#undef HAVE_ERROR + +/* Define to 1 if you have the <error.h> header file. */ +#undef HAVE_ERROR_H + /* Define to 1 if you have the `euidaccess' function. */ #undef HAVE_EUIDACCESS @@ -623,6 +659,9 @@ /* Define to 1 if your system has a working `getgroups' function. */ #undef HAVE_GETGROUPS +/* Define to 1 if you have the `getline' function. */ +#undef HAVE_GETLINE + /* Define to 1 if you have the <getopt.h> header file. */ #undef HAVE_GETOPT_H @@ -654,6 +693,9 @@ /* Define if the isnan(long double) function is available in libc. */ #undef HAVE_ISNANL_IN_LIBC +/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */ +#undef HAVE_LANGINFO_CODESET + /* Define if the ldexpl function is available in libc. */ #undef HAVE_LDEXPL_IN_LIBC @@ -697,6 +739,12 @@ /* Define to 1 if you have the `mbrtowc' function. */ #undef HAVE_MBRTOWC +/* Define to 1 if you have the `mbsinit' function. */ +#undef HAVE_MBSINIT + +/* Define to 1 if <wchar.h> declares mbstate_t. */ +#undef HAVE_MBSTATE_T + /* Define to 1 if you have the `mempcpy' function. */ #undef HAVE_MEMPCPY @@ -803,6 +851,12 @@ /* Define if you have ssl */ #undef HAVE_SSL +/* Define to 1 if you have the <stdbool.h> header file. */ +#undef HAVE_STDBOOL_H + +/* Define to 1 if you have the <stdckdint.h> header file. */ +#undef HAVE_STDCKDINT_H + /* Define to 1 if you have the <stddef.h> header file. */ #undef HAVE_STDDEF_H @@ -897,7 +951,7 @@ /* Define to 1 if you have the <sys/types.h> header file. */ #undef HAVE_SYS_TYPES_H -/* Define to 1 if you have the `timespec_get' function. */ +/* Define if you have the timespec_get function. */ #undef HAVE_TIMESPEC_GET /* Define to 1 if you have the <unistd.h> header file. */ @@ -939,9 +993,6 @@ /* Define to 1 if you have the `wcslen' function. */ #undef HAVE_WCSLEN -/* Define to 1 if you have the `wcsnlen' function. */ -#undef HAVE_WCSNLEN - /* Define to 1 if you have the <winsock2.h> header file. */ #undef HAVE_WINSOCK2_H @@ -961,9 +1012,6 @@ /* Define if utimes works properly. */ #undef HAVE_WORKING_UTIMES -/* Define to 1 if the system has the type `_Bool'. */ -#undef HAVE__BOOL - /* Define to 1 if you have the `_set_invalid_parameter_handler' function. */ #undef HAVE__SET_INVALID_PARAMETER_HANDLER @@ -1036,7 +1084,8 @@ # define _GL_EXTERN_INLINE_STDHEADER_BUG #endif #if ((__GNUC__ \ - ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \ + ? (defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \ + && !defined __PCC__) \ : (199901L <= __STDC_VERSION__ \ && !defined __HP_cc \ && !defined __PGI \ @@ -1046,6 +1095,7 @@ # define _GL_EXTERN_INLINE extern inline # define _GL_EXTERN_INLINE_IN_USE #elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \ + && !defined __PCC__ \ && !defined _GL_EXTERN_INLINE_STDHEADER_BUG) # if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__ /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */ @@ -1118,14 +1168,25 @@ #endif +/* Define to 1 on musl libc. */ +#undef MUSL_LIBC + /* Define if the vasnprintf implementation needs special code for the 'a' and 'A' directives. */ #undef NEED_PRINTF_DIRECTIVE_A +/* Define if the vasnprintf implementation needs special code for the 'b' + directive. */ +#undef NEED_PRINTF_DIRECTIVE_B + /* Define if the vasnprintf implementation needs special code for the 'F' directive. */ #undef NEED_PRINTF_DIRECTIVE_F +/* Define if the vasnprintf implementation needs special code for the 'lc' + directive. */ +#undef NEED_PRINTF_DIRECTIVE_LC + /* Define if the vasnprintf implementation needs special code for the 'ls' directive. */ #undef NEED_PRINTF_DIRECTIVE_LS @@ -1138,6 +1199,10 @@ out-of-memory conditions. */ #undef NEED_PRINTF_ENOMEM +/* Define if the vasnprintf implementation needs special code for the # flag + with a zero precision and a zero value in the 'x' and 'X' directives. */ +#undef NEED_PRINTF_FLAG_ALT_PRECISION_ZERO + /* Define if the vasnprintf implementation needs special code for the ' flag. */ #undef NEED_PRINTF_FLAG_GROUPING @@ -1221,9 +1286,6 @@ such as on Solaris 9 or cygwin 1.5. */ #undef RENAME_TRAILING_SLASH_SOURCE_BUG -/* Define to 1 if gnulib's dirfd() replacement is used. */ -#undef REPLACE_DIRFD - /* Define to 1 if gnulib's fchdir() replacement is used. */ #undef REPLACE_FCHDIR @@ -1349,11 +1411,15 @@ #ifndef __STDC_WANT_IEC_60559_DFP_EXT__ # undef __STDC_WANT_IEC_60559_DFP_EXT__ #endif +/* Enable extensions specified by C23 Annex F. */ +#ifndef __STDC_WANT_IEC_60559_EXT__ +# undef __STDC_WANT_IEC_60559_EXT__ +#endif /* Enable extensions specified by ISO/IEC TS 18661-4:2015. */ #ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__ # undef __STDC_WANT_IEC_60559_FUNCS_EXT__ #endif -/* Enable extensions specified by ISO/IEC TS 18661-3:2015. */ +/* Enable extensions specified by C23 Annex H and ISO/IEC TS 18661-3:2015. */ #ifndef __STDC_WANT_IEC_60559_TYPES_EXT__ # undef __STDC_WANT_IEC_60559_TYPES_EXT__ #endif @@ -1414,7 +1480,7 @@ /* Define to enable the declarations of ISO C 11 types and functions. */ #undef _ISOC11_SOURCE -/* Define for large files, on AIX-style hosts. */ +/* Define to 1 on platforms where this makes off_t a 64-bit type. */ #undef _LARGE_FILES /* The _Noreturn keyword of C11. */ @@ -1430,6 +1496,11 @@ AIX system header files and several gnulib header files use precisely this syntax with 'extern'. */ # define _Noreturn [[noreturn]] +# elif (defined __clang__ && __clang_major__ < 16 \ + && defined _GL_WORK_AROUND_LLVM_BUG_59792) + /* Compile with -D_GL_WORK_AROUND_LLVM_BUG_59792 to work around + that rare LLVM bug, though you may get many false-alarm warnings. */ +# define _Noreturn # elif ((!defined __cplusplus || defined __clang__) \ && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \ || (!defined __STRICT_ANSI__ \ @@ -1448,7 +1519,7 @@ #endif -/* Number of bits in a timestamp, on hosts where this is settable. */ +/* Number of bits in time_t, on hosts where this is settable. */ #undef _TIME_BITS /* For standard stat data types on VMS. */ @@ -1458,7 +1529,7 @@ used. */ #undef __GETOPT_PREFIX -/* For 64-bit time_t on 32-bit mingw. */ +/* Define to 1 on platforms where this makes time_t a 64-bit type. */ #undef __MINGW_USE_VC2005_COMPAT /* Define to 1 if the system <stdint.h> predates C++11. */ @@ -1503,7 +1574,7 @@ && (!defined __clang_minor__ \ || (defined __apple_build_version__ \ ? 6000000 <= __apple_build_version__ \ - : 3 < __clang_major__ + (5 <= __clang_minor__)))) + : 5 <= __clang_major__))) # define _GL_HAS_ATTRIBUTE(attr) __has_attribute (__##attr##__) #else # define _GL_HAS_ATTRIBUTE(attr) _GL_ATTR_##attr @@ -1537,16 +1608,30 @@ # define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4) #endif -#ifdef __has_c_attribute -# if ((defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) <= 201710 \ - && _GL_GNUC_PREREQ (4, 6)) -# pragma GCC diagnostic ignored "-Wpedantic" -# endif -# define _GL_HAS_C_ATTRIBUTE(attr) __has_c_attribute (__##attr##__) +/* Use __has_c_attribute if available. However, do not use with + pre-C23 GCC, which can issue false positives if -Wpedantic. */ +#if (defined __has_c_attribute \ + && ! (_GL_GNUC_PREREQ (4, 6) \ + && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) <= 201710)) +# define _GL_HAVE___HAS_C_ATTRIBUTE 1 #else -# define _GL_HAS_C_ATTRIBUTE(attr) 0 +# define _GL_HAVE___HAS_C_ATTRIBUTE 0 #endif +/* Define if, in a function declaration, the attributes in bracket syntax + [[...]] must come before the attributes in __attribute__((...)) syntax. + If this is defined, it is best to avoid the bracket syntax, so that the + various _GL_ATTRIBUTE_* can be cumulated on the same declaration in any + order. */ +#ifdef __cplusplus +# if defined __clang__ +# define _GL_BRACKET_BEFORE_ATTRIBUTE 1 +# endif +#else +# if defined __GNUC__ && !defined __clang__ +# define _GL_BRACKET_BEFORE_ATTRIBUTE 1 +# endif +#endif /* _GL_ATTRIBUTE_ALLOC_SIZE ((N)) declares that the Nth argument of the function is the size of the returned memory block. @@ -1554,29 +1639,35 @@ by the Nth argument of the function is the size of the returned memory block. */ /* Applies to: function, pointer to function, function types. */ -#if _GL_HAS_ATTRIBUTE (alloc_size) -# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args)) -#else -# define _GL_ATTRIBUTE_ALLOC_SIZE(args) +#ifndef _GL_ATTRIBUTE_ALLOC_SIZE +# if _GL_HAS_ATTRIBUTE (alloc_size) +# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args)) +# else +# define _GL_ATTRIBUTE_ALLOC_SIZE(args) +# endif #endif /* _GL_ATTRIBUTE_ALWAYS_INLINE tells that the compiler should always inline the function and report an error if it cannot do so. */ /* Applies to: function. */ -#if _GL_HAS_ATTRIBUTE (always_inline) -# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__)) -#else -# define _GL_ATTRIBUTE_ALWAYS_INLINE +#ifndef _GL_ATTRIBUTE_ALWAYS_INLINE +# if _GL_HAS_ATTRIBUTE (always_inline) +# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__)) +# else +# define _GL_ATTRIBUTE_ALWAYS_INLINE +# endif #endif /* _GL_ATTRIBUTE_ARTIFICIAL declares that the function is not important to show in stack traces when debugging. The compiler should omit the function from stack traces. */ /* Applies to: function. */ -#if _GL_HAS_ATTRIBUTE (artificial) -# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__)) -#else -# define _GL_ATTRIBUTE_ARTIFICIAL +#ifndef _GL_ATTRIBUTE_ARTIFICIAL +# if _GL_HAS_ATTRIBUTE (artificial) +# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__)) +# else +# define _GL_ATTRIBUTE_ARTIFICIAL +# endif #endif /* _GL_ATTRIBUTE_COLD declares that the function is rarely executed. */ @@ -1584,14 +1675,16 @@ /* Avoid __attribute__ ((cold)) on MinGW; see thread starting at <https://lists.gnu.org/r/emacs-devel/2019-04/msg01152.html>. Also, Oracle Studio 12.6 requires 'cold' not '__cold__'. */ -#if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__ -# ifndef __SUNPRO_C -# define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__)) +#ifndef _GL_ATTRIBUTE_COLD +# if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__ +# ifndef __SUNPRO_C +# define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__)) +# else +# define _GL_ATTRIBUTE_COLD __attribute__ ((cold)) +# endif # else -# define _GL_ATTRIBUTE_COLD __attribute__ ((cold)) +# define _GL_ATTRIBUTE_COLD # endif -#else -# define _GL_ATTRIBUTE_COLD #endif /* _GL_ATTRIBUTE_CONST declares that it is OK for a compiler to omit duplicate @@ -1601,10 +1694,12 @@ forever, and does not call longjmp. (This attribute is stricter than _GL_ATTRIBUTE_PURE.) */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (const) -# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__)) -#else -# define _GL_ATTRIBUTE_CONST +#ifndef _GL_ATTRIBUTE_CONST +# if _GL_HAS_ATTRIBUTE (const) +# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__)) +# else +# define _GL_ATTRIBUTE_CONST +# endif #endif /* _GL_ATTRIBUTE_DEALLOC (F, I) declares that the function returns pointers @@ -1613,16 +1708,25 @@ _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. */ -#if _GL_GNUC_PREREQ (11, 0) -# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i))) -#else -# define _GL_ATTRIBUTE_DEALLOC(f, i) +#ifndef _GL_ATTRIBUTE_DEALLOC +# if _GL_GNUC_PREREQ (11, 0) +# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i))) +# else +# define _GL_ATTRIBUTE_DEALLOC(f, i) +# endif #endif /* If gnulib's <string.h> or <wchar.h> has already defined this macro, continue to use this earlier definition, since <stdlib.h> may not have been included yet. */ #ifndef _GL_ATTRIBUTE_DEALLOC_FREE -# define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1) +# if defined __cplusplus && defined __GNUC__ && !defined __clang__ +/* Work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108231> */ +# define _GL_ATTRIBUTE_DEALLOC_FREE \ + _GL_ATTRIBUTE_DEALLOC ((void (*) (void *)) free, 1) +# else +# define _GL_ATTRIBUTE_DEALLOC_FREE \ + _GL_ATTRIBUTE_DEALLOC (free, 1) +# endif #endif /* _GL_ATTRIBUTE_DEPRECATED: Declares that an entity is deprecated. @@ -1633,12 +1737,20 @@ - enumeration, enumeration item, - typedef, in C++ also: namespace, class, template specialization. */ -#if _GL_HAS_C_ATTRIBUTE (deprecated) -# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]] -#elif _GL_HAS_ATTRIBUTE (deprecated) -# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__)) -#else -# define _GL_ATTRIBUTE_DEPRECATED +#ifndef _GL_ATTRIBUTE_DEPRECATED +# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE +# if _GL_HAVE___HAS_C_ATTRIBUTE +# if __has_c_attribute (__deprecated__) +# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]] +# endif +# endif +# endif +# if !defined _GL_ATTRIBUTE_DEPRECATED && _GL_HAS_ATTRIBUTE (deprecated) +# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__)) +# endif +# ifndef _GL_ATTRIBUTE_DEPRECATED +# define _GL_ATTRIBUTE_DEPRECATED +# endif #endif /* _GL_ATTRIBUTE_ERROR(msg) requests an error if a function is called and @@ -1646,24 +1758,28 @@ _GL_ATTRIBUTE_WARNING(msg) requests a warning if a function is called and the function call is not optimized away. */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (error) -# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg))) -# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg))) -#elif _GL_HAS_ATTRIBUTE (diagnose_if) -# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error"))) -# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning"))) -#else -# define _GL_ATTRIBUTE_ERROR(msg) -# define _GL_ATTRIBUTE_WARNING(msg) +#if !(defined _GL_ATTRIBUTE_ERROR && defined _GL_ATTRIBUTE_WARNING) +# if _GL_HAS_ATTRIBUTE (error) +# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg))) +# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg))) +# elif _GL_HAS_ATTRIBUTE (diagnose_if) +# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error"))) +# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning"))) +# else +# define _GL_ATTRIBUTE_ERROR(msg) +# define _GL_ATTRIBUTE_WARNING(msg) +# endif #endif /* _GL_ATTRIBUTE_EXTERNALLY_VISIBLE declares that the entity should remain visible to debuggers etc., even with '-fwhole-program'. */ /* Applies to: functions, variables. */ -#if _GL_HAS_ATTRIBUTE (externally_visible) -# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible)) -#else -# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE +#ifndef _GL_ATTRIBUTE_EXTERNALLY_VISIBLE +# if _GL_HAS_ATTRIBUTE (externally_visible) +# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible)) +# else +# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE +# endif #endif /* _GL_ATTRIBUTE_FALLTHROUGH declares that it is not a programming mistake if @@ -1671,12 +1787,18 @@ 'default' label. The compiler should not warn in this case. */ /* Applies to: Empty statement (;), inside a 'switch' statement. */ /* Always expands to something. */ -#if _GL_HAS_C_ATTRIBUTE (fallthrough) -# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]] -#elif _GL_HAS_ATTRIBUTE (fallthrough) -# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__)) -#else -# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0) +#ifndef _GL_ATTRIBUTE_FALLTHROUGH +# if _GL_HAVE___HAS_C_ATTRIBUTE +# if __has_c_attribute (__fallthrough__) +# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]] +# endif +# endif +# if !defined _GL_ATTRIBUTE_FALLTHROUGH && _GL_HAS_ATTRIBUTE (fallthrough) +# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__)) +# endif +# ifndef _GL_ATTRIBUTE_FALLTHROUGH +# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0) +# endif #endif /* _GL_ATTRIBUTE_FORMAT ((ARCHETYPE, STRING-INDEX, FIRST-TO-CHECK)) @@ -1690,10 +1812,12 @@ If FIRST-TO-CHECK is not 0, arguments starting at FIRST-TO_CHECK are suitable for the format string. */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (format) -# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) -#else -# define _GL_ATTRIBUTE_FORMAT(spec) +#ifndef _GL_ATTRIBUTE_FORMAT +# if _GL_HAS_ATTRIBUTE (format) +# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) +# else +# define _GL_ATTRIBUTE_FORMAT(spec) +# endif #endif /* _GL_ATTRIBUTE_LEAF declares that if the function is called from some other @@ -1701,19 +1825,23 @@ exception handling. This declaration lets the compiler optimize that unit more aggressively. */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (leaf) -# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__)) -#else -# define _GL_ATTRIBUTE_LEAF +#ifndef _GL_ATTRIBUTE_LEAF +# if _GL_HAS_ATTRIBUTE (leaf) +# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__)) +# else +# define _GL_ATTRIBUTE_LEAF +# endif #endif /* _GL_ATTRIBUTE_MALLOC declares that the function returns a pointer to freshly allocated memory. */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (malloc) -# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__)) -#else -# define _GL_ATTRIBUTE_MALLOC +#ifndef _GL_ATTRIBUTE_MALLOC +# if _GL_HAS_ATTRIBUTE (malloc) +# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__)) +# else +# define _GL_ATTRIBUTE_MALLOC +# endif #endif /* _GL_ATTRIBUTE_MAY_ALIAS declares that pointers to the type may point to the @@ -1721,10 +1849,12 @@ strict aliasing optimization. */ /* Applies to: types. */ /* Oracle Studio 12.6 mishandles may_alias despite __has_attribute OK. */ -#if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C -# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__)) -#else -# define _GL_ATTRIBUTE_MAY_ALIAS +#ifndef _GL_ATTRIBUTE_MAY_ALIAS +# if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C +# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__)) +# else +# define _GL_ATTRIBUTE_MAY_ALIAS +# endif #endif /* _GL_ATTRIBUTE_MAYBE_UNUSED declares that it is not a programming mistake if @@ -1736,15 +1866,29 @@ - enumeration, enumeration item, - typedef, in C++ also: class. */ -/* In C++ and C2x, this is spelled [[__maybe_unused__]]. +/* In C++ and C23, this is spelled [[__maybe_unused__]]. GCC's syntax is __attribute__ ((__unused__)). - clang supports both syntaxes. */ -#if _GL_HAS_C_ATTRIBUTE (maybe_unused) -# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]] -#else -# define _GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_UNUSED + clang supports both syntaxes. Except that with clang ≥ 6, < 10, in C++ mode, + __has_c_attribute (__maybe_unused__) yields true but the use of + [[__maybe_unused__]] nevertheless produces a warning. */ +#ifndef _GL_ATTRIBUTE_MAYBE_UNUSED +# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE +# if defined __clang__ && defined __cplusplus +# if !defined __apple_build_version__ && __clang_major__ >= 10 +# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]] +# endif +# elif _GL_HAVE___HAS_C_ATTRIBUTE +# if __has_c_attribute (__maybe_unused__) +# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]] +# endif +# endif +# endif +# ifndef _GL_ATTRIBUTE_MAYBE_UNUSED +# define _GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_UNUSED +# endif #endif -/* Alternative spelling of this macro, for convenience. */ +/* Alternative spelling of this macro, for convenience and for + compatibility with glibc/include/libc-symbols.h. */ #define _GL_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED /* Earlier spellings of this macro. */ #define _UNUSED_PARAMETER_ _GL_ATTRIBUTE_MAYBE_UNUSED @@ -1753,21 +1897,40 @@ discard the return value. The compiler may warn if the caller does not use the return value, unless the caller uses something like ignore_value. */ /* Applies to: function, enumeration, class. */ -#if _GL_HAS_C_ATTRIBUTE (nodiscard) -# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] -#elif _GL_HAS_ATTRIBUTE (warn_unused_result) -# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__)) -#else -# define _GL_ATTRIBUTE_NODISCARD +#ifndef _GL_ATTRIBUTE_NODISCARD +# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE +# if defined __clang__ && defined __cplusplus + /* With clang up to 15.0.6 (at least), in C++ mode, [[__nodiscard__]] produces + a warning. + The 1000 below means a yet unknown threshold. When clang++ version X + starts supporting [[__nodiscard__]] without warning about it, you can + replace the 1000 with X. */ +# if __clang_major__ >= 1000 +# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] +# endif +# elif _GL_HAVE___HAS_C_ATTRIBUTE +# if __has_c_attribute (__nodiscard__) +# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] +# endif +# endif +# endif +# if !defined _GL_ATTRIBUTE_NODISCARD && _GL_HAS_ATTRIBUTE (warn_unused_result) +# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__)) +# endif +# ifndef _GL_ATTRIBUTE_NODISCARD +# define _GL_ATTRIBUTE_NODISCARD +# endif #endif /* _GL_ATTRIBUTE_NOINLINE tells that the compiler should not inline the function. */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (noinline) -# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__)) -#else -# define _GL_ATTRIBUTE_NOINLINE +#ifndef _GL_ATTRIBUTE_NOINLINE +# if _GL_HAS_ATTRIBUTE (noinline) +# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__)) +# else +# define _GL_ATTRIBUTE_NOINLINE +# endif #endif /* _GL_ATTRIBUTE_NONNULL ((N1, N2,...)) declares that the arguments N1, N2,... @@ -1775,20 +1938,24 @@ _GL_ATTRIBUTE_NONNULL () declares that all pointer arguments must not be null. */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (nonnull) -# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args)) -#else -# define _GL_ATTRIBUTE_NONNULL(args) +#ifndef _GL_ATTRIBUTE_NONNULL +# if _GL_HAS_ATTRIBUTE (nonnull) +# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args)) +# else +# define _GL_ATTRIBUTE_NONNULL(args) +# endif #endif /* _GL_ATTRIBUTE_NONSTRING declares that the contents of a character array is not meant to be NUL-terminated. */ /* Applies to: struct/union members and variables that are arrays of element type '[[un]signed] char'. */ -#if _GL_HAS_ATTRIBUTE (nonstring) -# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__)) -#else -# define _GL_ATTRIBUTE_NONSTRING +#ifndef _GL_ATTRIBUTE_NONSTRING +# if _GL_HAS_ATTRIBUTE (nonstring) +# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__)) +# else +# define _GL_ATTRIBUTE_NONSTRING +# endif #endif /* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead. */ @@ -1796,10 +1963,26 @@ /* _GL_ATTRIBUTE_NOTHROW declares that the function does not throw exceptions. */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (nothrow) && !defined __cplusplus -# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__)) -#else -# define _GL_ATTRIBUTE_NOTHROW +/* After a function's parameter list, this attribute must come first, before + other attributes. */ +#ifndef _GL_ATTRIBUTE_NOTHROW +# if defined __cplusplus +# if _GL_GNUC_PREREQ (2, 8) || __clang_major >= 4 +# if __cplusplus >= 201103L +# define _GL_ATTRIBUTE_NOTHROW noexcept (true) +# else +# define _GL_ATTRIBUTE_NOTHROW throw () +# endif +# else +# define _GL_ATTRIBUTE_NOTHROW +# endif +# else +# if _GL_HAS_ATTRIBUTE (nothrow) +# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__)) +# else +# define _GL_ATTRIBUTE_NOTHROW +# endif +# endif #endif /* _GL_ATTRIBUTE_PACKED declares: @@ -1808,10 +1991,12 @@ minimizing the memory required. */ /* Applies to: struct members, struct, union, in C++ also: class. */ -#if _GL_HAS_ATTRIBUTE (packed) -# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__)) -#else -# define _GL_ATTRIBUTE_PACKED +#ifndef _GL_ATTRIBUTE_PACKED +# if _GL_HAS_ATTRIBUTE (packed) +# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__)) +# else +# define _GL_ATTRIBUTE_PACKED +# endif #endif /* _GL_ATTRIBUTE_PURE declares that It is OK for a compiler to omit duplicate @@ -1821,19 +2006,23 @@ observable state, and always returns exactly once. (This attribute is looser than _GL_ATTRIBUTE_CONST.) */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (pure) -# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__)) -#else -# define _GL_ATTRIBUTE_PURE +#ifndef _GL_ATTRIBUTE_PURE +# if _GL_HAS_ATTRIBUTE (pure) +# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__)) +# else +# define _GL_ATTRIBUTE_PURE +# endif #endif /* _GL_ATTRIBUTE_RETURNS_NONNULL declares that the function's return value is a non-NULL pointer. */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (returns_nonnull) -# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__)) -#else -# define _GL_ATTRIBUTE_RETURNS_NONNULL +#ifndef _GL_ATTRIBUTE_RETURNS_NONNULL +# if _GL_HAS_ATTRIBUTE (returns_nonnull) +# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__)) +# else +# define _GL_ATTRIBUTE_RETURNS_NONNULL +# endif #endif /* _GL_ATTRIBUTE_SENTINEL(pos) declares that the variadic function expects a @@ -1841,17 +2030,21 @@ _GL_ATTRIBUTE_SENTINEL () - The last argument is NULL (requires C99). _GL_ATTRIBUTE_SENTINEL ((N)) - The (N+1)st argument from the end is NULL. */ /* Applies to: functions. */ -#if _GL_HAS_ATTRIBUTE (sentinel) -# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos)) -#else -# define _GL_ATTRIBUTE_SENTINEL(pos) +#ifndef _GL_ATTRIBUTE_SENTINEL +# if _GL_HAS_ATTRIBUTE (sentinel) +# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos)) +# else +# define _GL_ATTRIBUTE_SENTINEL(pos) +# endif #endif /* A helper macro. Don't use it directly. */ -#if _GL_HAS_ATTRIBUTE (unused) -# define _GL_ATTRIBUTE_UNUSED __attribute__ ((__unused__)) -#else -# define _GL_ATTRIBUTE_UNUSED +#ifndef _GL_ATTRIBUTE_UNUSED +# if _GL_HAS_ATTRIBUTE (unused) +# define _GL_ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +# else +# define _GL_ATTRIBUTE_UNUSED +# endif #endif @@ -1861,10 +2054,24 @@ /* Applies to: label (both in C and C++). */ /* Note that g++ < 4.5 does not support the '__attribute__ ((__unused__)) ;' syntax. But clang does. */ -#if !(defined __cplusplus && !_GL_GNUC_PREREQ (4, 5)) || defined __clang__ -# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_UNUSED +#ifndef _GL_UNUSED_LABEL +# if !(defined __cplusplus && !_GL_GNUC_PREREQ (4, 5)) || defined __clang__ +# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_UNUSED +# else +# define _GL_UNUSED_LABEL +# endif +#endif + + +/* In C++, there is the concept of "language linkage", that encompasses + name mangling and function calling conventions. + The following macros start and end a block of "C" linkage. */ +#ifdef __cplusplus +# define _GL_BEGIN_C_LINKAGE extern "C" { +# define _GL_END_C_LINKAGE } #else -# define _GL_UNUSED_LABEL +# define _GL_BEGIN_C_LINKAGE +# define _GL_END_C_LINKAGE #endif @@ -1884,6 +2091,9 @@ # define __GNUC_STDC_INLINE__ 1 #endif +/* Define to a type if <wchar.h> does not define. */ +#undef mbstate_t + /* _GL_CMP (n1, n2) performs a three-valued comparison on n1 vs. n2, where n1 and n2 are expressions without side effects, that evaluate to real numbers (excluding NaN). @@ -1936,3 +2146,37 @@ /* Define to `int' if <sys/types.h> doesn't define. */ #undef uid_t + +#ifndef HAVE_C_BOOL +# if !defined __cplusplus && !defined __bool_true_false_are_defined +# if HAVE_STDBOOL_H +# include <stdbool.h> +# else +# if defined __SUNPRO_C +# error "<stdbool.h> is not usable with this configuration. To make it usable, add -D_STDC_C99= to $CC." +# else +# error "<stdbool.h> does not exist on this platform. Use gnulib module 'stdbool-c99' instead of gnulib module 'stdbool'." +# endif +# endif +# endif +# if !true +# define true (!false) +# endif +#endif + +#if (!defined HAVE_C_STATIC_ASSERT && !defined assert \ + && (!defined __cplusplus \ + || (__cpp_static_assert < 201411 \ + && __GNUG__ < 6 && __clang_major__ < 6))) + #include <assert.h> + #undef/**/assert + #ifdef __sgi + #undef/**/__ASSERT_H__ + #endif + /* Solaris 11.4 <assert.h> defines static_assert as a macro with 2 arguments. + We need it also to be invocable with a single argument. */ + #if defined __sun && (__STDC_VERSION__ - 0 >= 201112L) && !defined __cplusplus + #undef/**/static_assert + #define static_assert _Static_assert + #endif +#endif |