+
+#include <limits.h>
+
+#if HAVE_UINTPTR_T
+# if HAVE_INTTYPES_H
+# include <inttypes.h>
+# else
+# if HAVE_STDINT_H
+# include <stdint.h>
+# endif
+# endif
+#else
+/* 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) = xmalloc ((N) * sizeof *(P)))
+#define REALLOC(P, N) ((P) = xrealloc (P, (N) * sizeof *(P)))
+
+/* From xstrndup.c. */
+char *xstrndup (const char *s, size_t n);
+
+
+/*---------------------.
+| Missing prototypes. |
+`---------------------*/
+
+#if defined HAVE_DECL_STPCPY && !HAVE_DECL_STPCPY
+char *stpcpy (char *dest, const char *src);
+#endif
+
+#if defined HAVE_DECL_STRCHR && !HAVE_DECL_STRCHR
+char *strchr (const char *s, int c);
+#endif
+
+#if defined HAVE_DECL_STRSPN && !HAVE_DECL_STRSPN
+size_t strspn (const char *s, const char *accept);
+#endif
+
+#if defined HAVE_DECL_STRNLEN && !HAVE_DECL_STRNLEN
+size_t strnlen (const char *s, size_t maxlen);
+#endif
+
+#if defined HAVE_DECL_MEMCHR && !HAVE_DECL_MEMCHR
+void *memchr (const void *s, int c, size_t n);
+#endif
+
+#if defined HAVE_DECL_MEMRCHR && !HAVE_DECL_MEMRCHR
+void *memrchr (const void *s, int c, size_t n);
+#endif
+
+
+
+/*-----------------.
+| 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. */
+# if !defined (__GNUC__) || __GNUC__ < 2 || \
+(__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+# 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. */
+#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+# define __format__ format
+# define __printf__ printf
+#endif
+
+#ifndef ATTRIBUTE_NORETURN
+# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
+#endif
+
+#ifndef ATTRIBUTE_UNUSED
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#endif
+
+/*------.
+| NLS. |
+`------*/
+
+#if HAVE_LOCALE_H
+# include <locale.h>
+#endif
+#if !HAVE_SETLOCALE
+# define setlocale(Category, Locale)
+#endif
+
+#include <gettext.h>
+#define _(Msgid) gettext (Msgid)
+#define N_(Msgid) (Msgid)
+
+
+/*-------------------------------.
+| Fix broken compilation flags. |
+`-------------------------------*/
+
+#ifndef LOCALEDIR
+# define LOCALEDIR "/usr/local/share/locale"
+#endif
+
+
+/*-----------.
+| Booleans. |
+`-----------*/
+
+#if HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# ifndef __bool_true_false_are_defined
+# if ! HAVE__BOOL
+# ifdef __cplusplus
+typedef bool _Bool;
+# else
+typedef unsigned char _Bool;
+# endif
+# endif
+# define bool _Bool
+# define false 0
+# define true 1
+# define __bool_true_false_are_defined 1
+# endif
+#endif
+
+
+/*-----------.
+| Obstacks. |
+`-----------*/
+
+# define obstack_chunk_alloc xmalloc
+# define obstack_chunk_free free
+# include <obstack.h>
+
+#define obstack_sgrow(Obs, Str) \
+ obstack_grow (Obs, Str, strlen (Str))
+
+#define obstack_fgrow1(Obs, Format, Arg1) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1); \
+ obstack_grow (Obs, buf, strlen (buf)); \
+} while (0)
+
+#define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1, Arg2); \
+ obstack_grow (Obs, buf, strlen (buf)); \
+} while (0)
+
+#define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1, Arg2, Arg3); \
+ 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)
+
+
+
+/*-----------------------------------------.
+| 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 DEFAULT_TMPDIR
+# define DEFAULT_TMPDIR "/tmp"
+#endif
+
+
+
+/*---------------------.
+| Free a linked list. |
+`---------------------*/
+
+#define LIST_FREE(Type, List) \
+do { \
+ Type *_node, *_next; \
+ for (_node = List; _node; _node = _next) \
+ { \
+ _next = _node->next; \
+ XFREE (_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 */