Commit 5fd96fd5 authored by Michael Beck's avatar Michael Beck
Browse files

Obstack: Deleted the special windows version, make Win64 warning free.

Use PTR_INT_TYPE instead of long which is 32bit on Win64.

[r28193]
parent 0d03fd9e
...@@ -149,7 +149,7 @@ struct _obstack_chunk /* Lives at front of each chunk. */ ...@@ -149,7 +149,7 @@ struct _obstack_chunk /* Lives at front of each chunk. */
struct obstack /* control current object in current chunk */ struct obstack /* control current object in current chunk */
{ {
long chunk_size; /* preferred size to allocate chunks in */ PTR_INT_TYPE chunk_size; /* preferred size to allocate chunks in */
struct _obstack_chunk *chunk; /* address of current struct obstack_chunk */ struct _obstack_chunk *chunk; /* address of current struct obstack_chunk */
char *object_base; /* address of object we are building */ char *object_base; /* address of object we are building */
char *next_free; /* where to add next char to current object */ char *next_free; /* where to add next char to current object */
...@@ -163,7 +163,7 @@ struct obstack /* control current object in current chunk */ ...@@ -163,7 +163,7 @@ struct obstack /* control current object in current chunk */
/* These prototypes vary based on `use_extra_arg', and we use /* These prototypes vary based on `use_extra_arg', and we use
casts to the prototypeless function type in all assignments, casts to the prototypeless function type in all assignments,
but having prototypes here quiets -Wstrict-prototypes. */ but having prototypes here quiets -Wstrict-prototypes. */
struct _obstack_chunk *(*chunkfun) (void *, long); struct _obstack_chunk *(*chunkfun) (void *, PTR_INT_TYPE);
void (*freefun) (void *, struct _obstack_chunk *); void (*freefun) (void *, struct _obstack_chunk *);
void *extra_arg; /* first arg for chunk alloc/dealloc funcs */ void *extra_arg; /* first arg for chunk alloc/dealloc funcs */
unsigned use_extra_arg:1; /* chunk alloc/dealloc funcs take extra arg */ unsigned use_extra_arg:1; /* chunk alloc/dealloc funcs take extra arg */
...@@ -178,13 +178,13 @@ struct obstack /* control current object in current chunk */ ...@@ -178,13 +178,13 @@ struct obstack /* control current object in current chunk */
/* Declare the external functions we use; they are in obstack.c. */ /* Declare the external functions we use; they are in obstack.c. */
extern void _obstack_newchunk (struct obstack *, int); extern void _obstack_newchunk (struct obstack *, PTR_INT_TYPE);
extern int _obstack_begin (struct obstack *, int, int, extern int _obstack_begin (struct obstack *, int, int,
void *(*) (long), void (*) (void *)); void *(*) (PTR_INT_TYPE), void (*) (void *));
extern int _obstack_begin_1 (struct obstack *, int, int, extern int _obstack_begin_1 (struct obstack *, int, int,
void *(*) (void *, long), void *(*) (void *, PTR_INT_TYPE),
void (*) (void *, void *), void *); void (*) (void *, void *), void *);
extern int _obstack_memory_used (struct obstack *); extern PTR_INT_TYPE _obstack_memory_used (struct obstack *);
void obstack_free (struct obstack *obstack, void *block); void obstack_free (struct obstack *obstack, void *block);
...@@ -219,26 +219,26 @@ extern int obstack_exit_failure; ...@@ -219,26 +219,26 @@ extern int obstack_exit_failure;
/* To prevent prototype warnings provide complete argument list. */ /* To prevent prototype warnings provide complete argument list. */
#define obstack_init(h) \ #define obstack_init(h) \
_obstack_begin ((h), 0, 0, \ _obstack_begin ((h), 0, 0, \
(void *(*) (long)) obstack_chunk_alloc, \ (void *(*) (PTR_INT_TYPE)) obstack_chunk_alloc, \
(void (*) (void *)) obstack_chunk_free) (void (*) (void *)) obstack_chunk_free)
#define obstack_begin(h, size) \ #define obstack_begin(h, size) \
_obstack_begin ((h), (size), 0, \ _obstack_begin ((h), (size), 0, \
(void *(*) (long)) obstack_chunk_alloc, \ (void *(*) (PTR_INT_TYPE)) obstack_chunk_alloc, \
(void (*) (void *)) obstack_chunk_free) (void (*) (void *)) obstack_chunk_free)
#define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \ #define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \
_obstack_begin ((h), (size), (alignment), \ _obstack_begin ((h), (size), (alignment), \
(void *(*) (long)) (chunkfun), \ (void *(*) (PTR_INT_TYPE)) (chunkfun), \
(void (*) (void *)) (freefun)) (void (*) (void *)) (freefun))
#define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \ #define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \
_obstack_begin_1 ((h), (size), (alignment), \ _obstack_begin_1 ((h), (size), (alignment), \
(void *(*) (void *, long)) (chunkfun), \ (void *(*) (void *, PTR_INT_TYPE)) (chunkfun), \
(void (*) (void *, void *)) (freefun), (arg)) (void (*) (void *, void *)) (freefun), (arg))
#define obstack_chunkfun(h, newchunkfun) \ #define obstack_chunkfun(h, newchunkfun) \
((h) -> chunkfun = (struct _obstack_chunk *(*)(void *, long)) (newchunkfun)) ((h) -> chunkfun = (struct _obstack_chunk *(*)(void *, PTR_INT_TYPE)) (newchunkfun))
#define obstack_freefun(h, newfreefun) \ #define obstack_freefun(h, newfreefun) \
((h) -> freefun = (void (*)(void *, struct _obstack_chunk *)) (newfreefun)) ((h) -> freefun = (void (*)(void *, struct _obstack_chunk *)) (newfreefun))
......
...@@ -82,7 +82,7 @@ int obstack_exit_failure = EXIT_FAILURE; ...@@ -82,7 +82,7 @@ int obstack_exit_failure = EXIT_FAILURE;
# define CALL_CHUNKFUN(h, size) \ # define CALL_CHUNKFUN(h, size) \
(((h) -> use_extra_arg) \ (((h) -> use_extra_arg) \
? (*(h)->chunkfun) ((h)->extra_arg, (size)) \ ? (*(h)->chunkfun) ((h)->extra_arg, (size)) \
: (*(struct _obstack_chunk *(*) (long)) (h)->chunkfun) ((size))) : (*(struct _obstack_chunk *(*) (PTR_INT_TYPE)) (h)->chunkfun) ((size)))
# define CALL_FREEFUN(h, old_chunk) \ # define CALL_FREEFUN(h, old_chunk) \
do { \ do { \
...@@ -102,7 +102,7 @@ int obstack_exit_failure = EXIT_FAILURE; ...@@ -102,7 +102,7 @@ int obstack_exit_failure = EXIT_FAILURE;
allocation fails. */ allocation fails. */
int _obstack_begin(struct obstack *h, int size, int alignment, int _obstack_begin(struct obstack *h, int size, int alignment,
void *(*chunkfun)(long), void (*freefun)(void *)) void *(*chunkfun)(PTR_INT_TYPE), void (*freefun)(void *))
{ {
register struct _obstack_chunk *chunk; /* points to new chunk */ register struct _obstack_chunk *chunk; /* points to new chunk */
...@@ -125,7 +125,7 @@ int _obstack_begin(struct obstack *h, int size, int alignment, ...@@ -125,7 +125,7 @@ int _obstack_begin(struct obstack *h, int size, int alignment,
size = 4096 - extra; size = 4096 - extra;
} }
h->chunkfun = (struct _obstack_chunk * (*)(void *, long)) chunkfun; h->chunkfun = (struct _obstack_chunk * (*)(void *, PTR_INT_TYPE)) chunkfun;
h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun; h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
h->chunk_size = size; h->chunk_size = size;
h->alignment_mask = alignment - 1; h->alignment_mask = alignment - 1;
...@@ -146,7 +146,7 @@ int _obstack_begin(struct obstack *h, int size, int alignment, ...@@ -146,7 +146,7 @@ int _obstack_begin(struct obstack *h, int size, int alignment,
} }
int _obstack_begin_1(struct obstack *h, int size, int alignment, int _obstack_begin_1(struct obstack *h, int size, int alignment,
void *(*chunkfun) (void *, long), void *(*chunkfun) (void *, PTR_INT_TYPE),
void (*freefun) (void *, void *), void *arg) void (*freefun) (void *, void *), void *arg)
{ {
register struct _obstack_chunk *chunk; /* points to new chunk */ register struct _obstack_chunk *chunk; /* points to new chunk */
...@@ -170,7 +170,7 @@ int _obstack_begin_1(struct obstack *h, int size, int alignment, ...@@ -170,7 +170,7 @@ int _obstack_begin_1(struct obstack *h, int size, int alignment,
size = 4096 - extra; size = 4096 - extra;
} }
h->chunkfun = (struct _obstack_chunk * (*)(void *,long)) chunkfun; h->chunkfun = (struct _obstack_chunk * (*)(void *,PTR_INT_TYPE)) chunkfun;
h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun; h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
h->chunk_size = size; h->chunk_size = size;
h->alignment_mask = alignment - 1; h->alignment_mask = alignment - 1;
...@@ -197,14 +197,14 @@ int _obstack_begin_1(struct obstack *h, int size, int alignment, ...@@ -197,14 +197,14 @@ int _obstack_begin_1(struct obstack *h, int size, int alignment,
Copies any partial object from the end of the old chunk Copies any partial object from the end of the old chunk
to the beginning of the new one. */ to the beginning of the new one. */
void _obstack_newchunk(struct obstack *h, int length) void _obstack_newchunk(struct obstack *h, PTR_INT_TYPE length)
{ {
register struct _obstack_chunk *old_chunk = h->chunk; register struct _obstack_chunk *old_chunk = h->chunk;
register struct _obstack_chunk *new_chunk; register struct _obstack_chunk *new_chunk;
register long new_size; register PTR_INT_TYPE new_size;
register long obj_size = h->next_free - h->object_base; register PTR_INT_TYPE obj_size = h->next_free - h->object_base;
register long i; register PTR_INT_TYPE i;
long already; PTR_INT_TYPE already;
char *object_base; char *object_base;
/* Compute size for new chunk. */ /* Compute size for new chunk. */
...@@ -321,10 +321,10 @@ void obstack_free(struct obstack *h, void *obj) ...@@ -321,10 +321,10 @@ void obstack_free(struct obstack *h, void *obj)
abort (); abort ();
} }
int _obstack_memory_used(struct obstack *h) PTR_INT_TYPE _obstack_memory_used(struct obstack *h)
{ {
register struct _obstack_chunk* lp; register struct _obstack_chunk* lp;
register int nbytes = 0; register PTR_INT_TYPE nbytes = 0;
for (lp = h->chunk; lp != 0; lp = lp->prev) for (lp = h->chunk; lp != 0; lp = lp->prev)
{ {
......
/* obstack.c - subroutines used implicitly by object stack macros
Copyright (C) 1988,89,90,91,92,93,94,96,97 Free Software Foundation, Inc.
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,
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. */
#include <config.h>
#include <stdlib.h>
#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
/* 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
supports the same library interface we do. This code is part of the GNU
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
files, it is simpler to just do this in the source for each such file. */
/* Random thing to get __GNU_LIBRARY__. */
#include <stdio.h>
#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
#endif
#ifndef ELIDE_CODE
#if defined (__STDC__) && __STDC__
#define POINTER void *
#else
#define POINTER char *
#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))
/* 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
/* 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'. */
#if defined (__STDC__) && __STDC__
static void print_and_abort (void);
void (*obstack_alloc_failed_handler) (void) = print_and_abort;
#else
static void print_and_abort ();
void (*obstack_alloc_failed_handler) () = print_and_abort;
#endif
/* 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. */
int _obstack_begin(h, size, alignment, chunkfun, freefun)
struct obstack *h;
int size;
int alignment;
#if defined (__STDC__) && __STDC__
POINTER (*chunkfun) (long);
void (*freefun) (void *);
#else
POINTER (*chunkfun) ();
void (*freefun) ();
#endif
{
register struct _obstack_chunk *chunk; /* points to new chunk */
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;
}
#if defined (__STDC__) && __STDC__
h->chunkfun = (struct _obstack_chunk * (*)(void *, long)) chunkfun;
h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
#else
h->chunkfun = (struct _obstack_chunk * (*)()) chunkfun;
h->freefun = freefun;
#endif
h->chunk_size = size;
h->alignment_mask = alignment - 1;
h->use_extra_arg = 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->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;
}
int _obstack_begin_1 (h, size, alignment, chunkfun, freefun, arg)
struct obstack *h;
int size;
int alignment;
#if defined (__STDC__) && __STDC__
POINTER (*chunkfun) (POINTER, long);
void (*freefun) (POINTER, POINTER);
#else
POINTER (*chunkfun) ();
void (*freefun) ();
#endif
POINTER arg;
{
register struct _obstack_chunk *chunk; /* points to new chunk */
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;
}
#if defined(__STDC__) && __STDC__
h->chunkfun = (struct _obstack_chunk * (*)(void *,long)) chunkfun;
h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
#else
h->chunkfun = (struct _obstack_chunk * (*)()) chunkfun;
h->freefun = freefun;
#endif
h->chunk_size = size;
h->alignment_mask = alignment - 1;
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;
}
/* Allocate a new current chunk for the obstack *H
on the assumption that LENGTH bytes need to be added
to the current object, or a new object of length LENGTH allocated.
Copies any partial object from the end of the old chunk
to the beginning of the new one. */
void _obstack_newchunk (h, length)
struct obstack *h;
int 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;
/* Compute size for new chunk. */
new_size = (obj_size + length) + (obj_size >> 3) + 100;
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 (!new_chunk)
(*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];
/* 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)
{
new_chunk->prev = old_chunk->prev;
CALL_FREEFUN (h, old_chunk);
}
h->object_base = new_chunk->contents;
h->next_free = h->object_base + obj_size;
/* The new chunk certainly contains no empty object yet. */
h->maybe_empty_object = 0;
}
/* Return nonzero if object OBJ has been allocated from obstack H.
This is here for debugging.
If you use it in a program, you are probably losing. */
#if defined (__STDC__) && __STDC__
/* 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);
#endif
int _obstack_allocated_p (h, obj)
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 >= 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))
{
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 (h, obj)
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 ();
}
/* This function is used from ANSI code. */
void obstack_free (h, obj)
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,