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keeping all returned heap memory in the 0xdeadbeef state (including the first sizeof(void *) bytes otherwise for the free list). While wasting a lot of memory it allows you to rely on 0xdeadbeef being always present as no future allocation will reuse the freed memory block. * Also added heap_debug_malloc_with_guard_page() which is intended to allocate a memory block so it is aligned that the start of invalid memory past the allocation is in an unmapped guard page. However the kernel backend that would guarantee this is not yet implemented, so right now this works only by chance if no other area happens to be allocated exactly past the created one. With a very specifc suspicion you can put that one allocation you get to good use though. It causes a crash when accessing memory past the allocation size so you actually get a backtrace from where the access happened instead of only after freeing/wall checking. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35478 a95241bf-73f2-0310-859d-f6bbb57e9c96 |
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