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(obstack_empty_p): Don't assume that chunk->contents is suitably

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aligned.
This commit is contained in:
Paul Eggert
2004-08-10 05:16:29 +00:00
parent 17c3e95e58
commit 3dec705e02
1 changed files with 8 additions and 2 deletions
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lib/obstack.h
+8 -2
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@@ -287,7 +287,10 @@ __extension__ \
# define obstack_empty_p(OBSTACK) \
__extension__ \
({ struct obstack const *__o = (OBSTACK); \
(__o->chunk->prev == 0 && __o->next_free - __o->chunk->contents == 0); })
(__o->chunk->prev == 0 \
&& __o->next_free == __PTR_ALIGN ((char *) __o->chunk, \
__o->chunk->contents, \
__o->alignment_mask)); })
# define obstack_grow(OBSTACK,where,length) \
__extension__ \
@@ -411,7 +414,10 @@ __extension__ \
(unsigned) ((h)->chunk_limit - (h)->next_free)
# define obstack_empty_p(h) \
((h)->chunk->prev == 0 && (h)->next_free - (h)->chunk->contents == 0)
((h)->chunk->prev == 0 \
&& (h)->next_free == __PTR_ALIGN ((char *) (h)->chunk, \
(h)->chunk->contents, \
(h)->alignment_mask))
/* Note that the call to _obstack_newchunk is enclosed in (..., 0)
so that we can avoid having void expressions