/* Get common system includes and various definitions and declarations based
on autoconf macros.
- Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
- Free Software Foundation, Inc.
+ Copyright (C) 1998-2020 Free Software Foundation, Inc.
-This file is part of libcpp (aka cpplib).
+This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef LIBCPP_SYSTEM_H
#ifdef HAVE_STDDEF_H
# include <stddef.h>
#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
#include <stdio.h>
+#ifdef __cplusplus
+#include <new>
+#endif
+
/* Define a generic NULL if one hasn't already been defined. */
#ifndef NULL
#define NULL 0
#endif
/* Use the unlocked open routines from libiberty. */
+
+/* Some of these are #define on some systems, e.g. on AIX to redirect
+ the names to 64bit capable functions for LARGE_FILES support. These
+ redefs are pointless here so we can override them. */
+
+#undef fopen
+#undef freopen
+
#define fopen(PATH,MODE) fopen_unlocked(PATH,MODE)
#define fdopen(FILDES,MODE) fdopen_unlocked(FILDES,MODE)
#define freopen(PATH,MODE,STREAM) freopen_unlocked(PATH,MODE,STREAM)
# define fputc(C, Stream) fputc_unlocked (C, Stream)
# endif
+#ifdef __cplusplus
+extern "C" {
+#endif
+
# ifdef HAVE_CLEARERR_UNLOCKED
# undef clearerr
# define clearerr(Stream) clearerr_unlocked (Stream)
# endif
# endif
+#ifdef __cplusplus
+}
+#endif
+
#endif
/* ??? Glibc's fwrite/fread_unlocked macros cause
/* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
It is necessary at least when t == time_t. */
#define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
- ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0))
+ ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
#define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
/* Use that infrastructure to provide a few constants. */
here. These checks will be in the undefined state while configure
is running so be careful to test "defined (HAVE_DECL_*)". */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
#if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
extern void abort (void);
#endif
+#ifdef __cplusplus
+}
+#endif
+
#if HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
??? C99 designated initializers are not supported by most C++
compilers, including G++. -- gdr, 2005-05-18 */
#if !defined(HAVE_DESIGNATED_INITIALIZERS)
+#ifdef __cplusplus
+#define HAVE_DESIGNATED_INITIALIZERS 0
+#else
#define HAVE_DESIGNATED_INITIALIZERS \
- ((!defined(__cplusplus) && (GCC_VERSION >= 2007)) \
- || (__STDC_VERSION__ >= 199901L))
+ ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
#endif
-
-/* Be conservative and only use enum bitfields with GCC.
- FIXME: provide a complete autoconf test for buggy enum bitfields. */
-
-#if (GCC_VERSION > 2000)
-#define ENUM_BITFIELD(TYPE) __extension__ enum TYPE
-#else
-#define ENUM_BITFIELD(TYPE) unsigned int
#endif
#ifndef offsetof
#define __builtin_expect(a, b) (a)
#endif
-/* Provide a fake boolean type. We make no attempt to use the
- C99 _Bool, as it may not be available in the bootstrap compiler,
- and even if it is, it is liable to be buggy.
- This must be after all inclusion of system headers, as some of
- them will mess us up. */
-#undef bool
-#undef true
-#undef false
-#undef TRUE
-#undef FALSE
+/* Redefine abort to report an internal error w/o coredump, and
+ reporting the location of the error in the source file. */
+extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
+#define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
-#ifndef __cplusplus
-#define bool unsigned char
+/* Use gcc_assert(EXPR) to test invariants. */
+#if ENABLE_ASSERT_CHECKING
+#define gcc_assert(EXPR) \
+ ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
+#elif (GCC_VERSION >= 4005)
+#define gcc_assert(EXPR) \
+ ((void)(__builtin_expect (!(EXPR), 0) ? __builtin_unreachable (), 0 : 0))
+#else
+/* Include EXPR, so that unused variable warnings do not occur. */
+#define gcc_assert(EXPR) ((void)(0 && (EXPR)))
#endif
-#define true 1
-#define false 0
-/* Some compilers do not allow the use of unsigned char in bitfields. */
-#define BOOL_BITFIELD unsigned int
+#if CHECKING_P
+#define gcc_checking_assert(EXPR) gcc_assert (EXPR)
+#else
+/* N.B.: in release build EXPR is not evaluated. */
+#define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
+#endif
/* Poison identifiers we do not want to use. */
#if (GCC_VERSION >= 3000)
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