-/* Copyright (C) 1992, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2002, 2004, 2005, 2006, 2007, 2009, 2011, 2012
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
#ifndef _SYS_CDEFS_H
#define _SYS_CDEFS_H 1
-#include <features.h>
+/* We are almost always included from features.h. */
+#ifndef _FEATURES_H
+# include <features.h>
+#endif
+
+/* The GNU libc does not support any K&R compilers or the traditional mode
+ of ISO C compilers anymore. Check for some of the combinations not
+ anymore supported. */
+#if defined __GNUC__ && !defined __STDC__
+# error "You need a ISO C conforming compiler to use the glibc headers"
+#endif
/* Some user header file might have defined this before. */
#undef __P
+#undef __PMT
#ifdef __GNUC__
-#define __P(args) args /* GCC can always grok prototypes. */
-#define __DOTS , ...
-
-#else /* Not GCC. */
-
-#define __inline /* No inline functions. */
-
-#if (defined (__STDC__) && __STDC__) || defined (__cplusplus)
+/* All functions, except those with callbacks or those that
+ synchronize memory, are leaf functions. */
+# if __GNUC_PREREQ (4, 6) && !defined _LIBC
+# define __LEAF , __leaf__
+# define __LEAF_ATTR __attribute__ ((__leaf__))
+# else
+# define __LEAF
+# define __LEAF_ATTR
+# endif
-#define __P(args) args
-#define __const const
-#define __signed signed
-#define __volatile volatile
-#define __DOTS , ...
+/* GCC can always grok prototypes. For C++ programs we add throw()
+ to help it optimize the function calls. But this works only with
+ gcc 2.8.x and egcs. For gcc 3.2 and up we even mark C functions
+ as non-throwing using a function attribute since programs can use
+ the -fexceptions options for C code as well. */
+# if !defined __cplusplus && __GNUC_PREREQ (3, 3)
+# define __THROW __attribute__ ((__nothrow__ __LEAF))
+# define __THROWNL __attribute__ ((__nothrow__))
+# define __NTH(fct) __attribute__ ((__nothrow__ __LEAF)) fct
+# else
+# if defined __cplusplus && __GNUC_PREREQ (2,8)
+# define __THROW throw ()
+# define __THROWNL throw ()
+# define __NTH(fct) __LEAF_ATTR fct throw ()
+# else
+# define __THROW
+# define __THROWNL
+# define __NTH(fct) fct
+# endif
+# endif
-#else /* Not ANSI C or C++. */
+#else /* Not GCC. */
-#define __P(args) () /* No prototypes. */
-#define __const /* No ANSI C keywords. */
-#define __signed
-#define __volatile
-#define __DOTS
+# define __inline /* No inline functions. */
-#endif /* ANSI C or C++. */
+# define __THROW
+# define __THROWNL
+# define __NTH(fct) fct
#endif /* GCC. */
+/* These two macros are not used in glibc anymore. They are kept here
+ only because some other projects expect the macros to be defined. */
+#define __P(args) args
+#define __PMT(args) args
+
/* For these things, GCC behaves the ANSI way normally,
and the non-ANSI way under -traditional. */
-#if defined (__STDC__) && __STDC__
-
-#define __CONCAT(x,y) x ## y
-#define __STRING(x) #x
+#define __CONCAT(x,y) x ## y
+#define __STRING(x) #x
/* This is not a typedef so `const __ptr_t' does the right thing. */
#define __ptr_t void *
#define __long_double_t long double
+
+/* C++ needs to know that types and declarations are C, not C++. */
+#ifdef __cplusplus
+# define __BEGIN_DECLS extern "C" {
+# define __END_DECLS }
#else
+# define __BEGIN_DECLS
+# define __END_DECLS
+#endif
-#define __CONCAT(x,y) x/**/y
-#define __STRING(x) "x"
-#define __ptr_t char *
-#define __long_double_t long double
+/* The standard library needs the functions from the ISO C90 standard
+ in the std namespace. At the same time we want to be safe for
+ future changes and we include the ISO C99 code in the non-standard
+ namespace __c99. The C++ wrapper header take case of adding the
+ definitions to the global namespace. */
+#if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES
+# define __BEGIN_NAMESPACE_STD namespace std {
+# define __END_NAMESPACE_STD }
+# define __USING_NAMESPACE_STD(name) using std::name;
+# define __BEGIN_NAMESPACE_C99 namespace __c99 {
+# define __END_NAMESPACE_C99 }
+# define __USING_NAMESPACE_C99(name) using __c99::name;
+#else
+/* For compatibility we do not add the declarations into any
+ namespace. They will end up in the global namespace which is what
+ old code expects. */
+# define __BEGIN_NAMESPACE_STD
+# define __END_NAMESPACE_STD
+# define __USING_NAMESPACE_STD(name)
+# define __BEGIN_NAMESPACE_C99
+# define __END_NAMESPACE_C99
+# define __USING_NAMESPACE_C99(name)
+#endif
-/* The BSD header files use the ANSI keywords unmodified (this means that
- old programs may lose if they use the new keywords as identifiers), but
- those names are not available under -traditional. We define them to
- their __ versions, which are taken care of above. */
-#ifdef __USE_BSD
-#define const __const
-#define signed __signed
-#define volatile __volatile
+
+/* Support for bounded pointers. */
+#ifndef __BOUNDED_POINTERS__
+# define __bounded /* nothing */
+# define __unbounded /* nothing */
+# define __ptrvalue /* nothing */
#endif
-#endif /* __STDC__ */
+/* Fortify support. */
+#define __bos(ptr) __builtin_object_size (ptr, __USE_FORTIFY_LEVEL > 1)
+#define __bos0(ptr) __builtin_object_size (ptr, 0)
-/* C++ needs to know that types and declarations are C, not C++. */
-#ifdef __cplusplus
-#define __BEGIN_DECLS extern "C" {
-#define __END_DECLS }
+#if __GNUC_PREREQ (4,3)
+# define __warndecl(name, msg) \
+ extern void name (void) __attribute__((__warning__ (msg)))
+# define __warnattr(msg) __attribute__((__warning__ (msg)))
+# define __errordecl(name, msg) \
+ extern void name (void) __attribute__((__error__ (msg)))
#else
-#define __BEGIN_DECLS
-#define __END_DECLS
+# define __warndecl(name, msg) extern void name (void)
+# define __warnattr(msg)
+# define __errordecl(name, msg) extern void name (void)
#endif
-/* GCC2 has various useful declarations that can be made with the
+/* Support for flexible arrays. */
+#if __GNUC_PREREQ (2,97)
+/* GCC 2.97 supports C99 flexible array members. */
+# define __flexarr []
+#else
+# ifdef __GNUC__
+# define __flexarr [0]
+# else
+# if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+# define __flexarr []
+# else
+/* Some other non-C99 compiler. Approximate with [1]. */
+# define __flexarr [1]
+# endif
+# endif
+#endif
+
+
+/* __asm__ ("xyz") is used throughout the headers to rename functions
+ at the assembly language level. This is wrapped by the __REDIRECT
+ macro, in order to support compilers that can do this some other
+ way. When compilers don't support asm-names at all, we have to do
+ preprocessor tricks instead (which don't have exactly the right
+ semantics, but it's the best we can do).
+
+ Example:
+ int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid); */
+
+#if defined __GNUC__ && __GNUC__ >= 2
+
+# define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME (#alias))
+# ifdef __cplusplus
+# define __REDIRECT_NTH(name, proto, alias) \
+ name proto __THROW __asm__ (__ASMNAME (#alias))
+# define __REDIRECT_NTHNL(name, proto, alias) \
+ name proto __THROWNL __asm__ (__ASMNAME (#alias))
+# else
+# define __REDIRECT_NTH(name, proto, alias) \
+ name proto __asm__ (__ASMNAME (#alias)) __THROW
+# define __REDIRECT_NTHNL(name, proto, alias) \
+ name proto __asm__ (__ASMNAME (#alias)) __THROWNL
+# endif
+# define __ASMNAME(cname) __ASMNAME2 (__USER_LABEL_PREFIX__, cname)
+# define __ASMNAME2(prefix, cname) __STRING (prefix) cname
+
+/*
+#elif __SOME_OTHER_COMPILER__
+
+# define __REDIRECT(name, proto, alias) name proto; \
+ _Pragma("let " #name " = " #alias)
+*/
+#endif
+
+/* GCC has various useful declarations that can be made with the
`__attribute__' syntax. All of the ways we use this do fine if
- they are omitted for compilers that don't understand it. */
-#if !defined (__GNUC__) || __GNUC__ < 2
-#define __attribute__(xyz) /* Ignore. */
+ they are omitted for compilers that don't understand it. */
+#if !defined __GNUC__ || __GNUC__ < 2
+# define __attribute__(xyz) /* Ignore */
#endif
+/* At some point during the gcc 2.96 development the `malloc' attribute
+ for functions was introduced. We don't want to use it unconditionally
+ (although this would be possible) since it generates warnings. */
+#if __GNUC_PREREQ (2,96)
+# define __attribute_malloc__ __attribute__ ((__malloc__))
+#else
+# define __attribute_malloc__ /* Ignore */
+#endif
-/* For now no version of gcc knows the `restrict' keyword. Define it
- for now unconditionally to the empty string. */
-#define __restrict
+/* At some point during the gcc 2.96 development the `pure' attribute
+ for functions was introduced. We don't want to use it unconditionally
+ (although this would be possible) since it generates warnings. */
+#if __GNUC_PREREQ (2,96)
+# define __attribute_pure__ __attribute__ ((__pure__))
+#else
+# define __attribute_pure__ /* Ignore */
+#endif
+
+/* This declaration tells the compiler that the value is constant. */
+#if __GNUC_PREREQ (2,5)
+# define __attribute_const__ __attribute__ ((__const__))
+#else
+# define __attribute_const__ /* Ignore */
+#endif
+
+/* At some point during the gcc 3.1 development the `used' attribute
+ for functions was introduced. We don't want to use it unconditionally
+ (although this would be possible) since it generates warnings. */
+#if __GNUC_PREREQ (3,1)
+# define __attribute_used__ __attribute__ ((__used__))
+# define __attribute_noinline__ __attribute__ ((__noinline__))
+#else
+# define __attribute_used__ __attribute__ ((__unused__))
+# define __attribute_noinline__ /* Ignore */
+#endif
+
+/* gcc allows marking deprecated functions. */
+#if __GNUC_PREREQ (3,2)
+# define __attribute_deprecated__ __attribute__ ((__deprecated__))
+#else
+# define __attribute_deprecated__ /* Ignore */
+#endif
+
+/* At some point during the gcc 2.8 development the `format_arg' attribute
+ for functions was introduced. We don't want to use it unconditionally
+ (although this would be possible) since it generates warnings.
+ If several `format_arg' attributes are given for the same function, in
+ gcc-3.0 and older, all but the last one are ignored. In newer gccs,
+ all designated arguments are considered. */
+#if __GNUC_PREREQ (2,8)
+# define __attribute_format_arg__(x) __attribute__ ((__format_arg__ (x)))
+#else
+# define __attribute_format_arg__(x) /* Ignore */
+#endif
+
+/* At some point during the gcc 2.97 development the `strfmon' format
+ attribute for functions was introduced. We don't want to use it
+ unconditionally (although this would be possible) since it
+ generates warnings. */
+#if __GNUC_PREREQ (2,97)
+# define __attribute_format_strfmon__(a,b) \
+ __attribute__ ((__format__ (__strfmon__, a, b)))
+#else
+# define __attribute_format_strfmon__(a,b) /* Ignore */
+#endif
+
+/* The nonull function attribute allows to mark pointer parameters which
+ must not be NULL. */
+#if __GNUC_PREREQ (3,3)
+# define __nonnull(params) __attribute__ ((__nonnull__ params))
+#else
+# define __nonnull(params)
+#endif
+
+/* If fortification mode, we warn about unused results of certain
+ function calls which can lead to problems. */
+#if __GNUC_PREREQ (3,4)
+# define __attribute_warn_unused_result__ \
+ __attribute__ ((__warn_unused_result__))
+# if __USE_FORTIFY_LEVEL > 0
+# define __wur __attribute_warn_unused_result__
+# endif
+#else
+# define __attribute_warn_unused_result__ /* empty */
+#endif
+#ifndef __wur
+# define __wur /* Ignore */
+#endif
+
+/* Forces a function to be always inlined. */
+#if __GNUC_PREREQ (3,2)
+# define __always_inline __inline __attribute__ ((__always_inline__))
+#else
+# define __always_inline __inline
+#endif
+
+/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+ inline semantics, unless -fgnu89-inline is used. */
+#if !defined __cplusplus || __GNUC_PREREQ (4,3)
+# if defined __GNUC_STDC_INLINE__ || defined __cplusplus
+# define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
+# if __GNUC_PREREQ (4,3)
+# define __extern_always_inline \
+ extern __always_inline __attribute__ ((__gnu_inline__, __artificial__))
+# else
+# define __extern_always_inline \
+ extern __always_inline __attribute__ ((__gnu_inline__))
+# endif
+# else
+# define __extern_inline extern __inline
+# if __GNUC_PREREQ (4,3)
+# define __extern_always_inline \
+ extern __always_inline __attribute__ ((__artificial__))
+# else
+# define __extern_always_inline extern __always_inline
+# endif
+# endif
+#endif
+
+/* GCC 4.3 and above allow passing all anonymous arguments of an
+ __extern_always_inline function to some other vararg function. */
+#if __GNUC_PREREQ (4,3)
+# define __va_arg_pack() __builtin_va_arg_pack ()
+# define __va_arg_pack_len() __builtin_va_arg_pack_len ()
+#endif
+
+/* It is possible to compile containing GCC extensions even if GCC is
+ run in pedantic mode if the uses are carefully marked using the
+ `__extension__' keyword. But this is not generally available before
+ version 2.8. */
+#if !__GNUC_PREREQ (2,8)
+# define __extension__ /* Ignore */
+#endif
+
+/* __restrict is known in EGCS 1.2 and above. */
+#if !__GNUC_PREREQ (2,92)
+# define __restrict /* Ignore */
+#endif
+
+/* ISO C99 also allows to declare arrays as non-overlapping. The syntax is
+ array_name[restrict]
+ GCC 3.1 supports this. */
+#if __GNUC_PREREQ (3,1) && !defined __GNUG__
+# define __restrict_arr __restrict
+#else
+# ifdef __GNUC__
+# define __restrict_arr /* Not supported in old GCC. */
+# else
+# if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+# define __restrict_arr restrict
+# else
+/* Some other non-C99 compiler. */
+# define __restrict_arr /* Not supported. */
+# endif
+# endif
+#endif
+
+#include <bits/wordsize.h>
+
+#if defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
+# define __LDBL_COMPAT 1
+# ifdef __REDIRECT
+# define __LDBL_REDIR1(name, proto, alias) __REDIRECT (name, proto, alias)
+# define __LDBL_REDIR(name, proto) \
+ __LDBL_REDIR1 (name, proto, __nldbl_##name)
+# define __LDBL_REDIR1_NTH(name, proto, alias) __REDIRECT_NTH (name, proto, alias)
+# define __LDBL_REDIR_NTH(name, proto) \
+ __LDBL_REDIR1_NTH (name, proto, __nldbl_##name)
+# define __LDBL_REDIR1_DECL(name, alias) \
+ extern __typeof (name) name __asm (__ASMNAME (#alias));
+# define __LDBL_REDIR_DECL(name) \
+ extern __typeof (name) name __asm (__ASMNAME ("__nldbl_" #name));
+# define __REDIRECT_LDBL(name, proto, alias) \
+ __LDBL_REDIR1 (name, proto, __nldbl_##alias)
+# define __REDIRECT_NTH_LDBL(name, proto, alias) \
+ __LDBL_REDIR1_NTH (name, proto, __nldbl_##alias)
+# endif
+#endif
+#if !defined __LDBL_COMPAT || !defined __REDIRECT
+# define __LDBL_REDIR1(name, proto, alias) name proto
+# define __LDBL_REDIR(name, proto) name proto
+# define __LDBL_REDIR1_NTH(name, proto, alias) name proto __THROW
+# define __LDBL_REDIR_NTH(name, proto) name proto __THROW
+# define __LDBL_REDIR_DECL(name)
+# ifdef __REDIRECT
+# define __REDIRECT_LDBL(name, proto, alias) __REDIRECT (name, proto, alias)
+# define __REDIRECT_NTH_LDBL(name, proto, alias) \
+ __REDIRECT_NTH (name, proto, alias)
+# endif
+#endif
#endif /* sys/cdefs.h */
projects / thirdparty / glibc.git / blobdiff