Rev all the header files to sync things with glibc 2.2.4

1 files changed, 195 insertions, 27 deletions

diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h
index 7df9f1e52..02454ee4d 100644
--- a/include/sys/cdefs.h
+++ b/include/sys/cdefs.h
@@ -1,49 +1,217 @@
+/* Copyright (C) 1992,93,94,95,96,97,98,99,2000,2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-#ifndef __SYS_CDEFS_H
-#define __SYS_CDEFS_H
-#include <features.h>
+   The GNU C Library is free software; you can redistribute it and/or
+   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.
 
-#if defined (__STDC__) && __STDC__
+   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
+   Lesser General Public License for more details.
 
-#define	__CONCAT(x,y)	x ## y
-#define	__STRING(x)	#x
+   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
+
+/* 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__
+
+/* 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.  */
+# if defined __cplusplus && __GNUC_PREREQ (2,8)
+#  define __THROW	throw ()
+# else
+#  define __THROW
+# endif
+# define __P(args)	args __THROW
+/* This macro will be used for functions which might take C++ callback
+   functions.  */
+# define __PMT(args)	args
+
+#else	/* Not GCC.  */
+
+# define __inline		/* No inline functions.  */
+
+# define __THROW
+# define __P(args)	args
+# define __PMT(args)	args
+
+# define __const	const
+# define __signed	signed
+# define __volatile	volatile
+
+#endif	/* GCC.  */
+
+/* For these things, GCC behaves the ANSI way normally,
+   and the non-ANSI way under -traditional.  */
+
+#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
+
 
+/* Support for bounded pointers.  */
+#ifndef __BOUNDED_POINTERS__
+# define __bounded	/* nothing */
+# define __unbounded	/* nothing */
+# define __ptrvalue	/* nothing */
+#endif
+
+
+/* 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); */
 
-#define	__CONCAT(x,y)	x/**/y
-#define	__STRING(x)	"x"
+#if defined __GNUC__ && __GNUC__ >= 2
 
-#define __ptr_t char *
+# define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME (#alias))
+# 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
 
-/* C++ needs to know that types and declarations are C, not C++.  */
-#ifdef  __cplusplus
-# define __BEGIN_DECLS  extern "C" {
-# define __END_DECLS    }
+/* 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 */
+#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 __BEGIN_DECLS
-# define __END_DECLS
+# define __attribute_malloc__ /* Ignore */
 #endif
 
-/* GNUish things */
-#define __CONSTVALUE
-#define __CONSTVALUE2
+/* 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
 
-#ifdef __GNUC__
-/* 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.  */
-#if defined __cplusplus && __GNUC_PREREQ (2,8)
-#define __THROW		throw()
+/* 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 __THROW
+# define __attribute_format_arg__(x) /* Ignore */
 #endif
-#else /* GCC */
-#define __THROW
+
+/* 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
 
+/* 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
+
+#endif	 /* sys/cdefs.h */