diff options
Diffstat (limited to 'malloc/obstack.h')
| -rw-r--r-- | malloc/obstack.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/malloc/obstack.h b/malloc/obstack.h index ad6b830fcb..49492eb73c 100644 --- a/malloc/obstack.h +++ b/malloc/obstack.h @@ -379,6 +379,11 @@ __extension__ \ _obstack_newchunk (__o, __len); \ (void) 0; }) +#define obstack_empty_p(OBSTACK) \ + __extension__ \ + ({ struct obstack *__o = (OBSTACK); \ + (__o->chunk->prev == 0 && __o->next_free - __o->chunk->contents == 0); }) + #define obstack_grow(OBSTACK,where,length) \ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ @@ -492,6 +497,9 @@ __extension__ \ #define obstack_room(h) \ (unsigned) ((h)->chunk_limit - (h)->next_free) +#define obstack_empty_p(h) \ + (h->chunk->prev == 0 && h->next_free - h->chunk->contents == 0) + /* Note that the call to _obstack_newchunk is enclosed in (..., 0) so that we can avoid having void expressions in the arms of the conditional expression. |