* GNUmakefile: Update git-version-gen invocation so make dist

[bison.git] / src / system.h

diff --git a/src/system.h b/src/system.h
index 437c1f15920ad1e3a6e9a0555a6dc1e97c017c73..57a432d0a7b2fd758ddefb6e6ac17d7b118c3c9d 100644 (file)
--- a/src/system.h
+++ b/src/system.h
@@ -1,10 +1,12 @@
-/* system-dependent definitions for Bison.
-   Copyright 2000 Free Software Foundation, Inc.
+/* System-dependent definitions for Bison.

 
 

-   This program is free software; you can redistribute it and/or modify
+   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free
+   Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify

    it under the terms of the GNU General Public License as published by
    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 version.
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.

 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of


@@ -12,129 +14,123 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License

-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 #ifndef BISON_SYSTEM_H
 #define BISON_SYSTEM_H
 
 
 #ifndef BISON_SYSTEM_H
 #define BISON_SYSTEM_H
 

-#ifdef HAVE_CONFIG_H
-# include <config.h>
+/* flex 2.5.31 gratutiously defines macros like INT8_MIN.  But this
+   runs afoul of pre-C99 compilers that have <inttypes.h> or
+   <stdint.h>, which are included below if available.  It also runs
+   afoul of pre-C99 compilers that define these macros in <limits.h>.  */
+#if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901
+# undef INT8_MIN
+# undef INT16_MIN
+# undef INT32_MIN
+# undef INT8_MAX
+# undef INT16_MAX
+# undef UINT8_MAX
+# undef INT32_MAX
+# undef UINT16_MAX
+# undef UINT32_MAX

 #endif
 
 #endif
 

-#include <stdio.h>
-
-#include <assert.h>
-
-#ifdef MSDOS
-# include <io.h>
-#endif
+#include <limits.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>

 
 

-#ifdef _MSC_VER
-# include <stdlib.h>
-# include <process.h>
-# define getpid _getpid
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>

 #endif
 
 #endif
 

-#if HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
+#include <unistd.h>
+#include <inttypes.h>

 
 

-#if HAVE_UNISTD_H
-# include <unistd.h>
+#ifndef UINTPTR_MAX
+/* This isn't perfect, but it's good enough for Bison, which needs
+   only to hash pointers.  */
+typedef size_t uintptr_t;

 #endif
 
 #endif
 

-#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
-# include <string.h>
-/* An ANSI string.h and pre-ANSI memory.h might conflict.  */
-# if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
-#  include <memory.h>
-# endif /* not STDC_HEADERS and HAVE_MEMORY_H */
-# ifndef bcopy
-#  define bcopy(src, dst, num) memcpy((dst), (src), (num))
-# endif
-#else /* not STDC_HEADERS and not HAVE_STRING_H */
-# include <strings.h>
-/* memory.h and strings.h conflict on some systems.  */
-#endif /* not STDC_HEADERS and not HAVE_STRING_H */

 
 

-#if defined(STDC_HEADERS) || defined(HAVE_CTYPE_H)
-# include <ctype.h>
-#endif
+/*---------.
+| Gnulib.  |
+`---------*/

 
 

-#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
+#include <unlocked-io.h>
+#include <verify.h>
+#include <xalloc.h>

 
 

-#if PROTOTYPES
-# define PARAMS(p) p
-#else
-# define PARAMS(p) ()
-#endif

 
 /*-----------------.
 | GCC extensions.  |
 `-----------------*/
 
 
 /*-----------------.
 | GCC extensions.  |
 `-----------------*/
 

+/* Use this to suppress gcc's `...may be used before initialized'
+   warnings.  */
+#ifdef lint
+# define IF_LINT(Code) Code
+#else
+# define IF_LINT(Code) /* empty */
+#endif
+

 #ifndef __attribute__
 /* This feature is available in gcc versions 2.5 and later.  */
 #ifndef __attribute__
 /* This feature is available in gcc versions 2.5 and later.  */

-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+# if (! defined __GNUC__ || __GNUC__ < 2 \
+      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)

 #  define __attribute__(Spec) /* empty */
 # endif
 #  define __attribute__(Spec) /* empty */
 # endif

+#endif
+

 /* The __-protected variants of `format' and `printf' attributes
    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 /* The __-protected variants of `format' and `printf' attributes
    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */

-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
-#  define __format__ format
-#  define __printf__ printf
-# endif
+#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+# define __format__ format
+# define __printf__ printf

 #endif
 
 #endif
 

-
-/*------.
-| NLS.  |
-`------*/
-
-#ifdef HAVE_LOCALE_H
-# include <locale.h>
-#endif
-#ifndef HAVE_SETLOCALE
-# define setlocale(Category, Locale)
+#ifndef ATTRIBUTE_NORETURN
+# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))

 #endif
 
 #endif
 

-#ifdef ENABLE_NLS
-# include <libintl.h>
-# define _(Text) gettext (Text)
-#else
-# undef bindtextdomain
-# define bindtextdomain(Domain, Directory)
-# undef textdomain
-# define textdomain(Domain)
-# define _(Text) Text
+#ifndef ATTRIBUTE_UNUSED
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))

 #endif
 #endif

-#define N_(Text) Text

 
 

+#define FUNCTION_PRINT() fprintf (stderr, "%s: ", __func__)

 
 

-/*-------------------------------.
-| Fix broken compilation flags.  |
-`-------------------------------*/
+/*------.
+| NLS.  |
+`------*/

 
 

-#ifndef LOCALEDIR
-# define LOCALEDIR "/usr/local/share/locale"
-#endif
+#include <locale.h>

 
 

-#endif  /* BISON_SYSTEM_H */
+#include <gettext.h>
+#define _(Msgid)  gettext (Msgid)
+#define N_(Msgid) (Msgid)

 
 
 /*-----------.
 | Booleans.  |
 `-----------*/
 
 
 
 /*-----------.
 | Booleans.  |
 `-----------*/
 

-#ifndef TRUE
-# define TRUE  (1)
-# define FALSE (0)
-#endif
-typedef int bool;
+#include <stdbool.h>
+
+
+
+/*-------------.
+| Assertions.  |
+`-------------*/
+
+/* <assert.h>'s assertions are too heavyweight, and can be disabled
+   too easily, so use aver rather than assert.  */
+static inline void
+aver (bool assertion)
+{
+  if (! assertion)
+    abort ();
+}

 
 
 /*-----------.
 
 
 /*-----------.


@@ -143,10 +139,10 @@ typedef int bool;
 
 #define obstack_chunk_alloc xmalloc
 #define obstack_chunk_free  free
 
 #define obstack_chunk_alloc xmalloc
 #define obstack_chunk_free  free

-#include "obstack.h"
+#include <obstack.h>

 
 

-#define obstack_grow_literal_string(Obs, Str) \
-  obstack_grow (Obs, Str, sizeof (Str) - 1)
+#define obstack_sgrow(Obs, Str) \
+  obstack_grow (Obs, Str, strlen (Str))

 
 #define obstack_fgrow1(Obs, Format, Arg1)      \
 do {                                           \
 
 #define obstack_fgrow1(Obs, Format, Arg1)      \
 do {                                           \


@@ -169,53 +165,55 @@ do {                                                      \
   obstack_grow (Obs, buf, strlen (buf));               \
 } while (0)
 
   obstack_grow (Obs, buf, strlen (buf));               \
 } while (0)
 

+#define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)    \
+do {                                                           \
+  char buf[4096];                                              \
+  sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);               \
+  obstack_grow (Obs, buf, strlen (buf));                       \
+} while (0)
+

 
 

-/*---------------------------------.
-| Machine-dependencies for Bison.  |
-`---------------------------------*/

 
 

-#ifdef eta10
-# define       MAXSHORT        2147483647
-# define       MINSHORT        -2147483648
-#else
-# define       MAXSHORT        32767
-# define       MINSHORT        -32768
+/*-----------------------------------------.
+| Extensions to use for the output files.  |
+`-----------------------------------------*/
+
+#ifndef OUTPUT_EXT
+# define OUTPUT_EXT ".output"

 #endif
 
 #endif
 

-#if defined (MSDOS) && !defined (__GO32__)
-# define       BITS_PER_WORD   16
-# define MAXTABLE      16383
-#else
-# define       BITS_PER_WORD   32
-# define MAXTABLE      32767
+#ifndef TAB_EXT
+# define TAB_EXT ".tab"
+#endif
+
+#ifndef DEFAULT_TMPDIR
+# define DEFAULT_TMPDIR "/tmp"

 #endif
 
 #endif
 

-#define        WORDSIZE(n)     (((n) + BITS_PER_WORD - 1) / BITS_PER_WORD)
-#define        SETBIT(x, i)    ((x)[(i)/BITS_PER_WORD] |= (1<<((i) % BITS_PER_WORD)))
-#define RESETBIT(x, i) ((x)[(i)/BITS_PER_WORD] &= ~(1<<((i) % BITS_PER_WORD)))
-#define BITISSET(x, i) (((x)[(i)/BITS_PER_WORD] & (1<<((i) % BITS_PER_WORD))) != 0)
-
-
-/* Extensions to use for the output files. */
-
-#ifdef VMS
-  /* VMS. */
-# define EXT_TAB       "_tab"
-# define EXT_OUTPUT    ".output"
-# define EXT_STYPE_H   "_stype.h"
-# define EXT_GUARD_C   "_guard.c"
-#else /* ! VMS */
-# ifdef MSDOS
-   /* MS DOS. */
-#  define EXT_TAB      "_tab"
-#  define EXT_OUTPUT   ".out"
-#  define EXT_STYPE_H  ".sth"
-#  define EXT_GUARD_C  ".guc"
-# else /* ! MSDOS */
-  /* Standard. */
-#  define EXT_TAB      ".tab"
-#  define EXT_OUTPUT   ".output"
-#  define EXT_STYPE_H  ".stype.h"
-#  define EXT_GUARD_C  ".guard.c"
-# endif /* ! MSDOS */
-#endif /* ! VMS */
+
+
+/*---------------------.
+| Free a linked list.  |
+`---------------------*/
+
+#define LIST_FREE(Type, List)                  \
+do {                                           \
+  Type *_node, *_next;                         \
+  for (_node = List; _node; _node = _next)     \
+    {                                          \
+      _next = _node->next;                     \
+      free (_node);                            \
+    }                                          \
+} while (0)
+
+
+/*---------------------------------------------.
+| Debugging memory allocation (must be last).  |
+`---------------------------------------------*/
+
+# if WITH_DMALLOC
+#  define DMALLOC_FUNC_CHECK
+#  include <dmalloc.h>
+# endif /* WITH_DMALLOC */
+
+#endif  /* ! BISON_SYSTEM_H */