/* obstack.c - subroutines used implicitly by object stack macros
Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1996, 1997,
- 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation,
- Inc.
+ 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 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
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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. */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifdef _LIBC
# include <obstack.h>
+# include <shlib-compat.h>
#else
+# include <config.h>
# include "obstack.h"
#endif
# endif
#endif
-#if defined _LIBC && defined USE_IN_LIBIO
-# include <wchar.h>
-#endif
-
#include <stddef.h>
#ifndef ELIDE_CODE
+# include <stdint.h>
/* Determine default alignment. */
union fooround
{
- long int i;
+ uintmax_t i;
long double d;
void *p;
};
+struct fooalign
+{
+ char c;
+ union fooround u;
+};
/* If malloc were really smart, it would round addresses to DEFAULT_ALIGNMENT.
But in fact it might be less smart and round addresses to as much as
DEFAULT_ROUNDING. So we prepare for it to do that. */
enum
{
- DEFAULT_ALIGNMENT = offsetof (struct { char c; union fooround u; }, u),
+ DEFAULT_ALIGNMENT = offsetof (struct fooalign, u),
DEFAULT_ROUNDING = sizeof (union fooround)
};
# define obstack_exit_failure exit_failure
# endif
+# ifdef _LIBC
+# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)
+/* A looong time ago (before 1994, anyway; we're not sure) this global variable
+ was used by non-GNU-C macros to avoid multiple evaluation. The GNU C
+ library still exports it because somebody might use it. */
+struct obstack *_obstack_compat;
+compat_symbol (libc, _obstack_compat, _obstack, GLIBC_2_0);
+# endif
+# endif
+
/* Define a macro that either calls functions with the traditional malloc/free
calling interface, or calls functions with the mmalloc/mfree interface
(that adds an extra first argument), based on the state of use_extra_arg.
chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
if (!chunk)
(*obstack_alloc_failed_handler) ();
- h->next_free = h->object_base = chunk->contents;
+ h->next_free = h->object_base = __PTR_ALIGN ((char *) chunk, chunk->contents,
+ alignment - 1);
h->chunk_limit = chunk->limit
= (char *) chunk + h->chunk_size;
chunk->prev = 0;
chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
if (!chunk)
(*obstack_alloc_failed_handler) ();
- h->next_free = h->object_base = chunk->contents;
+ h->next_free = h->object_base = __PTR_ALIGN ((char *) chunk, chunk->contents,
+ alignment - 1);
h->chunk_limit = chunk->limit
= (char *) chunk + h->chunk_size;
chunk->prev = 0;
/* If the object just copied was the only data in OLD_CHUNK,
free that chunk and remove it from the chain.
But not if that chunk might contain an empty object. */
- if (h->object_base == old_chunk->contents && ! h->maybe_empty_object)
+ if (! h->maybe_empty_object
+ && (h->object_base
+ == __PTR_ALIGN ((char *) old_chunk, old_chunk->contents,
+ h->alignment_mask)))
{
new_chunk->prev = old_chunk->prev;
CALL_FREEFUN (h, old_chunk);
# undef obstack_free
void
-obstack_free (struct obstack *h, void *obj)
+__obstack_free (struct obstack *h, void *obj)
{
register struct _obstack_chunk *lp; /* below addr of any objects in this chunk */
register struct _obstack_chunk *plp; /* point to previous chunk if any */
happen because the "memory exhausted" message appears in other places
like this and the translation should be reused instead of creating
a very similar string which requires a separate translation. */
-# if defined _LIBC && defined USE_IN_LIBIO
- if (_IO_fwide (stderr, 0) > 0)
- __fwprintf (stderr, L"%s\n", _("memory exhausted"));
- else
+# ifdef _LIBC
+ (void) __fxprintf (NULL, "%s\n", _("memory exhausted"));
+# else
+ fprintf (stderr, "%s\n", _("memory exhausted"));
# endif
- fprintf (stderr, "%s\n", _("memory exhausted"));
exit (obstack_exit_failure);
}