X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/afbb696d1936dd21929ce156868b7c5ebd88b544..a6e5a28079865c4924194685723962f198fd33ff:/src/system.h

diff --git a/src/system.h b/src/system.h
index 10abfef5..97a92257 100644
--- a/src/system.h
+++ b/src/system.h
@@ -1,11 +1,11 @@
 /* System-dependent definitions for Bison.
 
-   Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2000-2007, 2009-2011 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   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
-   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
@@ -13,57 +13,53 @@
    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
 
-#if 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
 
 #include <limits.h>
 #include <stddef.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-/* Verify a requirement at compile-time (unlike assert, which is runtime).  */
-#define verify(name, assertion) struct name {char name[(assertion) ? 1 : -1];}
-
 #if HAVE_SYS_TYPES_H
 # include <sys/types.h>
 #endif
 
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
-#if HAVE_INTTYPES_H
-# include <inttypes.h>
-#endif
-#if HAVE_STDINT_H
-# include <stdint.h>
-#endif
+#include <unistd.h>
+#include <inttypes.h>
 
-#if ! HAVE_UINTPTR_T
+#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
 
-#include <xalloc.h>
-#define CALLOC(P, N) ((P) = xcalloc (N, sizeof *(P)))
-#define MALLOC(P, N) ((P) = xnmalloc (N, sizeof *(P)))
-#define REALLOC(P, N) ((P) = xnrealloc (P, N, sizeof *(P)))
-
 
-/*---------------------.
-| Missing prototypes.  |
-`---------------------*/
+/*---------.
+| Gnulib.  |
+`---------*/
 
-#include <stpcpy.h>
+#include <unlocked-io.h>
+#include <verify.h>
+#include <xalloc.h>
 
 
 /*-----------------.
@@ -80,8 +76,8 @@ typedef size_t uintptr_t;
 
 #ifndef __attribute__
 /* This feature is available in gcc versions 2.5 and later.  */
-# if !defined (__GNUC__) || __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
 #endif
@@ -101,6 +97,8 @@ typedef size_t uintptr_t;
 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 #endif
 
+#define FUNCTION_PRINT() fprintf (stderr, "%s: ", __func__)
+
 /*------.
 | NLS.  |
 `------*/
@@ -112,15 +110,6 @@ typedef size_t uintptr_t;
 #define N_(Msgid) (Msgid)
 
 
-/*-------------------------------.
-| Fix broken compilation flags.  |
-`-------------------------------*/
-
-#ifndef LOCALEDIR
-# define LOCALEDIR "/usr/local/share/locale"
-#endif
-
-
 /*-----------.
 | Booleans.  |
 `-----------*/
@@ -128,13 +117,40 @@ typedef size_t uintptr_t;
 #include <stdbool.h>
 
 
+
+/*-------------.
+| Assertions.  |
+`-------------*/
+
+/* In the past, Bison defined aver to simply invoke abort in the case of
+   a failed assertion.  The rationale was that <assert.h>'s assertions
+   were too heavyweight and could be disabled too easily.  See
+   discussions at
+   <http://lists.gnu.org/archive/html/bison-patches/2006-01/msg00080.html>
+   <http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00111.html>.
+
+   However, normal assert output can be helpful during development and
+   in bug reports from users.  Moreover, it's not clear now that
+   <assert.h>'s assertions are significantly heavyweight.  Finally, if
+   users want to experiment with disabling assertions, it's debatable
+   whether it's our responsibility to stop them.  See discussion
+   starting at
+   <http://lists.gnu.org/archive/html/bison-patches/2009-09/msg00013.html>.
+
+   For now, we use assert but we call it aver throughout Bison in case
+   we later wish to try another scheme.
+*/
+#include <assert.h>
+#define aver assert
+
+
 /*-----------.
 | Obstacks.  |
 `-----------*/
 
-# define obstack_chunk_alloc xmalloc
-# define obstack_chunk_free  free
-# include <obstack.h>
+#define obstack_chunk_alloc xmalloc
+#define obstack_chunk_free  free
+#include <obstack.h>
 
 #define obstack_sgrow(Obs, Str) \
   obstack_grow (Obs, Str, strlen (Str))
@@ -173,21 +189,13 @@ do {								\
 | Extensions to use for the output files.  |
 `-----------------------------------------*/
 
-#ifdef VMS
-  /* VMS. */
-# define TAB_EXT	"_tab"
-# define OUTPUT_EXT	".output"
-#else /* ! VMS */
-# ifdef MSDOS
-   /* MS DOS. */
-#  define TAB_EXT	"_tab"
-#  define OUTPUT_EXT	".out"
-# else /* ! MSDOS */
-  /* Standard. */
-#  define TAB_EXT	".tab"
-#  define OUTPUT_EXT	".output"
-# endif /* ! MSDOS */
-#endif /* ! VMS */
+#ifndef OUTPUT_EXT
+# define OUTPUT_EXT ".output"
+#endif
+
+#ifndef TAB_EXT
+# define TAB_EXT ".tab"
+#endif
 
 #ifndef DEFAULT_TMPDIR
 # define DEFAULT_TMPDIR "/tmp"