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ntdll: Take size of the arena from the current pointer before advancing.

This commit is contained in:
Vitaliy Margolen 2007-04-11 07:08:25 -06:00 committed by Alexandre Julliard
parent 53c05cb534
commit 5b4cfac3bf
1 changed files with 13 additions and 1 deletions
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14
dlls/ntdll/heap.c
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@ -1613,7 +1613,19 @@ NTSTATUS WINAPI RtlWalkHeap( HANDLE heap, PVOID entry_ptr )
goto HW_end;
}
ptr += entry->cbData; /* point to next arena */
if (((ARENA_INUSE *)ptr - 1)->magic == ARENA_INUSE_MAGIC)
{
ARENA_INUSE *pArena = (ARENA_INUSE *)ptr - 1;
ptr += pArena->size & ARENA_SIZE_MASK;
}
else if (((ARENA_FREE *)ptr - 1)->magic == ARENA_FREE_MAGIC)
{
ARENA_FREE *pArena = (ARENA_FREE *)ptr - 1;
ptr += pArena->size & ARENA_SIZE_MASK;
}
else
ptr += entry->cbData; /* point to next arena */
if (ptr > (char *)currentheap + currentheap->size - 1)
{ /* proceed with next subheap */
if (!(currentheap = currentheap->next))