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binutils-2.26

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git-svn-id: svn://kolibrios.org@6324 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
2016-03-12 03:07:23 +00:00
parent d818239c29
commit 3b53803119
572 changed files with 128744 additions and 64154 deletions
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550
contrib/toolchain/binutils/libiberty/obstack.c
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@@ -1,35 +1,32 @@
/* obstack.c - subroutines used implicitly by object stack macros
Copyright (C) 1988,89,90,91,92,93,94,96,97 Free Software Foundation, Inc.
Copyright (C) 1988-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
NOTE: This source is derived from an old version taken from the GNU C
Library (glibc).
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.
This program is distributed in the hope that it will be useful,
The GNU C Library 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.
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
USA. */
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#ifdef _LIBC
# include <obstack.h>
#else
# include <config.h>
# include "obstack.h"
#endif
#include "obstack.h"
/* NOTE BEFORE MODIFYING THIS FILE: This version number must be
incremented whenever callers compiled using an old obstack.h can no
longer properly call the functions in this obstack.c. */
#define OBSTACK_INTERFACE_VERSION 1
/* NOTE BEFORE MODIFYING THIS FILE: _OBSTACK_INTERFACE_VERSION in
obstack.h must be incremented whenever callers compiled using an old
obstack.h can no longer properly call the functions in this file. */
/* Comment out all this code if we are using the GNU C Library, and are not
actually compiling the library itself, and the installed library
@@ -37,115 +34,90 @@
C Library, but also included in many other GNU distributions. Compiling
and linking in this code is a waste when using the GNU C library
(especially if it is a shared library). Rather than having every GNU
program understand `configure --with-gnu-libc' and omit the object
program understand 'configure --with-gnu-libc' and omit the object
files, it is simpler to just do this in the source for each such file. */
#include <stdio.h> /* Random thing to get __GNU_LIBRARY__. */
#if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
#include <gnu-versions.h>
#if _GNU_OBSTACK_INTERFACE_VERSION == OBSTACK_INTERFACE_VERSION
#define ELIDE_CODE
#endif
#if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
# include <gnu-versions.h>
# if (_GNU_OBSTACK_INTERFACE_VERSION == _OBSTACK_INTERFACE_VERSION \
|| (_GNU_OBSTACK_INTERFACE_VERSION == 1 \
&& _OBSTACK_INTERFACE_VERSION == 2 \
&& defined SIZEOF_INT && defined SIZEOF_SIZE_T \
&& SIZEOF_INT == SIZEOF_SIZE_T))
# define _OBSTACK_ELIDE_CODE
# endif
#endif
#ifndef _OBSTACK_ELIDE_CODE
/* If GCC, or if an oddball (testing?) host that #defines __alignof__,
use the already-supplied __alignof__. Otherwise, this must be Gnulib
(as glibc assumes GCC); defer to Gnulib's alignof_type. */
# if !defined __GNUC__ && !defined __IBM__ALIGNOF__ && !defined __alignof__
# if defined __cplusplus
template <class type> struct alignof_helper { char __slot1; type __slot2; };
# define __alignof__(type) offsetof (alignof_helper<type>, __slot2)
# else
# define __alignof__(type) \
offsetof (struct { char __slot1; type __slot2; }, __slot2)
# endif
# endif
# include <stdlib.h>
# include <stdint.h>
#ifndef ELIDE_CODE
#define POINTER void *
# ifndef MAX
# define MAX(a,b) ((a) > (b) ? (a) : (b))
# endif
/* Determine default alignment. */
struct fooalign {char x; double d;};
#define DEFAULT_ALIGNMENT \
((PTR_INT_TYPE) ((char *) &((struct fooalign *) 0)->d - (char *) 0))
/* 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. */
union fooround {long x; double d;};
#define DEFAULT_ROUNDING (sizeof (union fooround))
DEFAULT_ROUNDING. So we prepare for it to do that.
/* When we copy a long block of data, this is the unit to do it with.
On some machines, copying successive ints does not work;
in such a case, redefine COPYING_UNIT to `long' (if that works)
or `char' as a last resort. */
#ifndef COPYING_UNIT
#define COPYING_UNIT int
#endif
DEFAULT_ALIGNMENT cannot be an enum constant; see gnulib's alignof.h. */
#define DEFAULT_ALIGNMENT MAX (__alignof__ (long double), \
MAX (__alignof__ (uintmax_t), \
__alignof__ (void *)))
#define DEFAULT_ROUNDING MAX (sizeof (long double), \
MAX (sizeof (uintmax_t), \
sizeof (void *)))
/* Call functions with either the traditional malloc/free calling
interface, or the mmalloc/mfree interface (that adds an extra first
argument), based on the value of use_extra_arg. */
static void *
call_chunkfun (struct obstack *h, size_t size)
{
if (h->use_extra_arg)
return h->chunkfun.extra (h->extra_arg, size);
else
return h->chunkfun.plain (size);
}
static void
call_freefun (struct obstack *h, void *old_chunk)
{
if (h->use_extra_arg)
h->freefun.extra (h->extra_arg, old_chunk);
else
h->freefun.plain (old_chunk);
}
/* The functions allocating more room by calling `obstack_chunk_alloc'
jump to the handler pointed to by `obstack_alloc_failed_handler'.
This variable by default points to the internal function
`print_and_abort'. */
static void print_and_abort (void);
void (*obstack_alloc_failed_handler) (void) = print_and_abort;
/* Exit value used when `print_and_abort' is used. */
#if defined __GNU_LIBRARY__ || defined HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifndef EXIT_FAILURE
#define EXIT_FAILURE 1
#endif
int obstack_exit_failure = EXIT_FAILURE;
/* The non-GNU-C macros copy the obstack into this global variable
to avoid multiple evaluation. */
struct obstack *_obstack;
/* 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.
For free, do not use ?:, since some compilers, like the MIPS compilers,
do not allow (expr) ? void : void. */
#if defined (__STDC__) && __STDC__
#define CALL_CHUNKFUN(h, size) \
(((h) -> use_extra_arg) \
? (*(h)->chunkfun) ((h)->extra_arg, (size)) \
: (*(struct _obstack_chunk *(*) (long)) (h)->chunkfun) ((size)))
#define CALL_FREEFUN(h, old_chunk) \
do { \
if ((h) -> use_extra_arg) \
(*(h)->freefun) ((h)->extra_arg, (old_chunk)); \
else \
(*(void (*) (void *)) (h)->freefun) ((old_chunk)); \
} while (0)
#else
#define CALL_CHUNKFUN(h, size) \
(((h) -> use_extra_arg) \
? (*(h)->chunkfun) ((h)->extra_arg, (size)) \
: (*(struct _obstack_chunk *(*) ()) (h)->chunkfun) ((size)))
#define CALL_FREEFUN(h, old_chunk) \
do { \
if ((h) -> use_extra_arg) \
(*(h)->freefun) ((h)->extra_arg, (old_chunk)); \
else \
(*(void (*) ()) (h)->freefun) ((old_chunk)); \
} while (0)
#endif
/* Initialize an obstack H for use. Specify chunk size SIZE (0 means default).
Objects start on multiples of ALIGNMENT (0 means use default).
CHUNKFUN is the function to use to allocate chunks,
and FREEFUN the function to free them.
Return nonzero if successful, zero if out of memory.
To recover from an out of memory error,
free up some memory, then call this again. */
Return nonzero if successful, calls obstack_alloc_failed_handler if
allocation fails. */
int
_obstack_begin (struct obstack *h, int size, int alignment,
POINTER (*chunkfun) (long), void (*freefun) (void *))
static int
_obstack_begin_worker (struct obstack *h,
_OBSTACK_SIZE_T size, _OBSTACK_SIZE_T alignment)
{
register struct _obstack_chunk *chunk; /* points to new chunk */
struct _obstack_chunk *chunk; /* points to new chunk */
if (alignment == 0)
alignment = (int) DEFAULT_ALIGNMENT;
alignment = DEFAULT_ALIGNMENT;
if (size == 0)
/* Default size is what GNU malloc can fit in a 4096-byte block. */
{
@@ -163,18 +135,16 @@ _obstack_begin (struct obstack *h, int size, int alignment,
size = 4096 - extra;
}
h->chunkfun = (struct _obstack_chunk * (*)(void *, long)) chunkfun;
h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
h->chunk_size = size;
h->alignment_mask = alignment - 1;
h->use_extra_arg = 0;
chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
chunk = (struct _obstack_chunk *) call_chunkfun (h, h->chunk_size);
if (!chunk)
(*obstack_alloc_failed_handler) ();
h->next_free = h->object_base = chunk->contents;
h->chunk_limit = chunk->limit
= (char *) chunk + h->chunk_size;
h->chunk = chunk;
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;
/* The initial chunk now contains no empty object. */
h->maybe_empty_object = 0;
@@ -183,49 +153,29 @@ _obstack_begin (struct obstack *h, int size, int alignment,
}
int
_obstack_begin_1 (struct obstack *h, int size, int alignment,
POINTER (*chunkfun) (POINTER, long),
void (*freefun) (POINTER, POINTER), POINTER arg)
_obstack_begin (struct obstack *h,
_OBSTACK_SIZE_T size, _OBSTACK_SIZE_T alignment,
void *(*chunkfun) (size_t),
void (*freefun) (void *))
{
register struct _obstack_chunk *chunk; /* points to new chunk */
h->chunkfun.plain = chunkfun;
h->freefun.plain = freefun;
h->use_extra_arg = 0;
return _obstack_begin_worker (h, size, alignment);
}
if (alignment == 0)
alignment = (int) DEFAULT_ALIGNMENT;
if (size == 0)
/* Default size is what GNU malloc can fit in a 4096-byte block. */
{
/* 12 is sizeof (mhead) and 4 is EXTRA from GNU malloc.
Use the values for range checking, because if range checking is off,
the extra bytes won't be missed terribly, but if range checking is on
and we used a larger request, a whole extra 4096 bytes would be
allocated.
These number are irrelevant to the new GNU malloc. I suspect it is
less sensitive to the size of the request. */
int extra = ((((12 + DEFAULT_ROUNDING - 1) & ~(DEFAULT_ROUNDING - 1))
+ 4 + DEFAULT_ROUNDING - 1)
& ~(DEFAULT_ROUNDING - 1));
size = 4096 - extra;
}
h->chunkfun = (struct _obstack_chunk * (*)(void *,long)) chunkfun;
h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
h->chunk_size = size;
h->alignment_mask = alignment - 1;
int
_obstack_begin_1 (struct obstack *h,
_OBSTACK_SIZE_T size, _OBSTACK_SIZE_T alignment,
void *(*chunkfun) (void *, size_t),
void (*freefun) (void *, void *),
void *arg)
{
h->chunkfun.extra = chunkfun;
h->freefun.extra = freefun;
h->extra_arg = arg;
h->use_extra_arg = 1;
chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
if (!chunk)
(*obstack_alloc_failed_handler) ();
h->next_free = h->object_base = chunk->contents;
h->chunk_limit = chunk->limit
= (char *) chunk + h->chunk_size;
chunk->prev = 0;
/* The initial chunk now contains no empty object. */
h->maybe_empty_object = 0;
h->alloc_failed = 0;
return 1;
return _obstack_begin_worker (h, size, alignment);
}
/* Allocate a new current chunk for the obstack *H
@@ -235,58 +185,51 @@ _obstack_begin_1 (struct obstack *h, int size, int alignment,
to the beginning of the new one. */
void
_obstack_newchunk (struct obstack *h, int length)
_obstack_newchunk (struct obstack *h, _OBSTACK_SIZE_T length)
{
register struct _obstack_chunk *old_chunk = h->chunk;
register struct _obstack_chunk *new_chunk;
register long new_size;
register long obj_size = h->next_free - h->object_base;
register long i;
long already;
struct _obstack_chunk *old_chunk = h->chunk;
struct _obstack_chunk *new_chunk = 0;
size_t obj_size = h->next_free - h->object_base;
char *object_base;
/* Compute size for new chunk. */
new_size = (obj_size + length) + (obj_size >> 3) + 100;
size_t sum1 = obj_size + length;
size_t sum2 = sum1 + h->alignment_mask;
size_t new_size = sum2 + (obj_size >> 3) + 100;
if (new_size < sum2)
new_size = sum2;
if (new_size < h->chunk_size)
new_size = h->chunk_size;
/* Allocate and initialize the new chunk. */
new_chunk = CALL_CHUNKFUN (h, new_size);
if (obj_size <= sum1 && sum1 <= sum2)
new_chunk = (struct _obstack_chunk *) call_chunkfun (h, new_size);
if (!new_chunk)
(*obstack_alloc_failed_handler) ();
(*obstack_alloc_failed_handler)();
h->chunk = new_chunk;
new_chunk->prev = old_chunk;
new_chunk->limit = h->chunk_limit = (char *) new_chunk + new_size;
/* Move the existing object to the new chunk.
Word at a time is fast and is safe if the object
is sufficiently aligned. */
if (h->alignment_mask + 1 >= DEFAULT_ALIGNMENT)
{
for (i = obj_size / sizeof (COPYING_UNIT) - 1;
i >= 0; i--)
((COPYING_UNIT *)new_chunk->contents)[i]
= ((COPYING_UNIT *)h->object_base)[i];
/* We used to copy the odd few remaining bytes as one extra COPYING_UNIT,
but that can cross a page boundary on a machine
which does not do strict alignment for COPYING_UNITS. */
already = obj_size / sizeof (COPYING_UNIT) * sizeof (COPYING_UNIT);
}
else
already = 0;
/* Copy remaining bytes one by one. */
for (i = already; i < obj_size; i++)
new_chunk->contents[i] = h->object_base[i];
/* Compute an aligned object_base in the new chunk */
object_base =
__PTR_ALIGN ((char *) new_chunk, new_chunk->contents, h->alignment_mask);
/* Move the existing object to the new chunk. */
memcpy (object_base, h->object_base, obj_size);
/* 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);
call_freefun (h, old_chunk);
}
h->object_base = new_chunk->contents;
h->object_base = object_base;
h->next_free = h->object_base + obj_size;
/* The new chunk certainly contains no empty object yet. */
h->maybe_empty_object = 0;
@@ -298,48 +241,43 @@ _obstack_newchunk (struct obstack *h, int length)
/* Suppress -Wmissing-prototypes warning. We don't want to declare this in
obstack.h because it is just for debugging. */
int _obstack_allocated_p (struct obstack *h, POINTER obj);
int _obstack_allocated_p (struct obstack *h, void *obj) __attribute_pure__;
int
_obstack_allocated_p (struct obstack *h, POINTER obj)
_obstack_allocated_p (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 */
struct _obstack_chunk *lp; /* below addr of any objects in this chunk */
struct _obstack_chunk *plp; /* point to previous chunk if any */
lp = (h)->chunk;
/* We use >= rather than > since the object cannot be exactly at
the beginning of the chunk but might be an empty object exactly
at the end of an adjacent chunk. */
while (lp != 0 && ((POINTER) lp >= obj || (POINTER) (lp)->limit < obj))
while (lp != 0 && ((void *) lp >= obj || (void *) (lp)->limit < obj))
{
plp = lp->prev;
lp = plp;
}
return lp != 0;
}
/* Free objects in obstack H, including OBJ and everything allocate
more recently than OBJ. If OBJ is zero, free everything in H. */
#undef obstack_free
/* This function has two names with identical definitions.
This is the first one, called from non-ANSI code. */
void
_obstack_free (struct obstack *h, POINTER 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 */
struct _obstack_chunk *lp; /* below addr of any objects in this chunk */
struct _obstack_chunk *plp; /* point to previous chunk if any */
lp = h->chunk;
/* We use >= because there cannot be an object at the beginning of a chunk.
But there can be an empty object at that address
at the end of another chunk. */
while (lp != 0 && ((POINTER) lp >= obj || (POINTER) (lp)->limit < obj))
while (lp != 0 && ((void *) lp >= obj || (void *) (lp)->limit < obj))
{
plp = lp->prev;
CALL_FREEFUN (h, lp);
call_freefun (h, lp);
lp = plp;
/* If we switch chunks, we can't tell whether the new current
chunk contains an empty object, so assume that it may. */
@@ -356,43 +294,11 @@ _obstack_free (struct obstack *h, POINTER obj)
abort ();
}
/* This function is used from ANSI code. */
void
obstack_free (struct obstack *h, POINTER 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 */
lp = h->chunk;
/* We use >= because there cannot be an object at the beginning of a chunk.
But there can be an empty object at that address
at the end of another chunk. */
while (lp != 0 && ((POINTER) lp >= obj || (POINTER) (lp)->limit < obj))
{
plp = lp->prev;
CALL_FREEFUN (h, lp);
lp = plp;
/* If we switch chunks, we can't tell whether the new current
chunk contains an empty object, so assume that it may. */
h->maybe_empty_object = 1;
}
if (lp)
{
h->object_base = h->next_free = (char *) (obj);
h->chunk_limit = lp->limit;
h->chunk = lp;
}
else if (obj != 0)
/* obj is not in any of the chunks! */
abort ();
}
int
_OBSTACK_SIZE_T
_obstack_memory_used (struct obstack *h)
{
register struct _obstack_chunk* lp;
register int nbytes = 0;
struct _obstack_chunk *lp;
_OBSTACK_SIZE_T nbytes = 0;
for (lp = h->chunk; lp != 0; lp = lp->prev)
{
@@ -400,111 +306,71 @@ _obstack_memory_used (struct obstack *h)
}
return nbytes;
}
# ifndef _OBSTACK_NO_ERROR_HANDLER
/* Define the error handler. */
#ifndef _
# if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC
# include <stdio.h>
/* Exit value used when 'print_and_abort' is used. */
# ifdef _LIBC
int obstack_exit_failure = EXIT_FAILURE;
# else
# ifndef EXIT_FAILURE
# define EXIT_FAILURE 1
# endif
# define obstack_exit_failure EXIT_FAILURE
# endif
# if defined _LIBC || (HAVE_LIBINTL_H && ENABLE_NLS)
# include <libintl.h>
# ifndef _
# define _(Str) gettext (Str)
# define _(msgid) gettext (msgid)
# endif
# else
# ifndef _
# define _(msgid) (msgid)
# endif
# endif
# else
# define _(Str) (Str)
# endif
#endif
static void
# if !(defined _Noreturn \
|| (defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112))
# if ((defined __GNUC__ \
&& (__GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))) \
|| (defined __SUNPRO_C && __SUNPRO_C >= 0x5110))
# define _Noreturn __attribute__ ((__noreturn__))
# elif defined _MSC_VER && _MSC_VER >= 1200
# define _Noreturn __declspec (noreturn)
# else
# define _Noreturn
# endif
# endif
# ifdef _LIBC
# include <libio/iolibio.h>
# endif
static _Noreturn void
print_and_abort (void)
{
fputs (_("memory exhausted\n"), stderr);
/* Don't change any of these strings. Yes, it would be possible to add
the newline to the string and use fputs or so. But this must not
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. */
# ifdef _LIBC
(void) __fxprintf (NULL, "%s\n", _("memory exhausted"));
# else
fprintf (stderr, "%s\n", _("memory exhausted"));
# endif
exit (obstack_exit_failure);
}
#if 0
/* These are now turned off because the applications do not use it
and it uses bcopy via obstack_grow, which causes trouble on sysV. */
/* Now define the functional versions of the obstack macros.
Define them to simply use the corresponding macros to do the job. */
/* The function names appear in parentheses in order to prevent
the macro-definitions of the names from being expanded there. */
POINTER (obstack_base) (struct obstack *obstack)
{
return obstack_base (obstack);
}
POINTER (obstack_next_free) (struct obstack *obstack)
{
return obstack_next_free (obstack);
}
int (obstack_object_size) (struct obstack *obstack)
{
return obstack_object_size (obstack);
}
int (obstack_room) (struct obstack *obstack)
{
return obstack_room (obstack);
}
int (obstack_make_room) (struct obstack *obstack, int length)
{
return obstack_make_room (obstack, length);
}
void (obstack_grow) (struct obstack *obstack, POINTER pointer, int length)
{
obstack_grow (obstack, pointer, length);
}
void (obstack_grow0) (struct obstack *obstack, POINTER pointer, int length)
{
obstack_grow0 (obstack, pointer, length);
}
void (obstack_1grow) (struct obstack *obstack, int character)
{
obstack_1grow (obstack, character);
}
void (obstack_blank) (struct obstack *obstack, int length)
{
obstack_blank (obstack, length);
}
void (obstack_1grow_fast) (struct obstack *obstack, int character)
{
obstack_1grow_fast (obstack, character);
}
void (obstack_blank_fast) (struct obstack *obstack, int length)
{
obstack_blank_fast (obstack, length);
}
POINTER (obstack_finish) (struct obstack *obstack)
{
return obstack_finish (obstack);
}
POINTER (obstack_alloc) (struct obstack *obstack, int length)
{
return obstack_alloc (obstack, length);
}
POINTER (obstack_copy) (struct obstack *obstack, POINTER pointer, int length)
{
return obstack_copy (obstack, pointer, length);
}
POINTER (obstack_copy0) (struct obstack *obstack, POINTER pointer, int length)
{
return obstack_copy0 (obstack, pointer, length);
}
#endif /* 0 */
#endif /* !ELIDE_CODE */
/* The functions allocating more room by calling 'obstack_chunk_alloc'
jump to the handler pointed to by 'obstack_alloc_failed_handler'.
This can be set to a user defined function which should either
abort gracefully or use longjump - but shouldn't return. This
variable by default points to the internal function
'print_and_abort'. */
void (*obstack_alloc_failed_handler) (void) = print_and_abort;
# endif /* !_OBSTACK_NO_ERROR_HANDLER */
#endif /* !_OBSTACK_ELIDE_CODE */