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nt_free): Only do arena boundary check for contiguous arenas.

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This commit is contained in:
Ulrich Drepper 2004-09-10 19:56:41 +00:00
parent 181742f804
commit 3e00177e5a
1 changed files with 3 additions and 2 deletions
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5
malloc/malloc.c
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@ -4229,8 +4229,9 @@ _int_free(mstate av, Void_t* mem)
if (__builtin_expect (p == av->top, 0)) if (__builtin_expect (p == av->top, 0))
goto double_free; goto double_free;
/* Or whether the next chunk is beyond the boundaries of the arena. */ /* Or whether the next chunk is beyond the boundaries of the arena. */
if (__builtin_expect ((char *) nextchunk >= ((char *) av->top if (__builtin_expect (contiguous (av)
+ chunksize(av->top)), 0)) && (char *) nextchunk
>= ((char *) av->top + chunksize(av->top)), 0))
goto double_free; goto double_free;
/* Or whether the block is actually not marked used. */ /* Or whether the block is actually not marked used. */
if (__builtin_expect (!prev_inuse(nextchunk), 0)) if (__builtin_expect (!prev_inuse(nextchunk), 0))