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authorSiddhesh Poyarekar <siddhesh@redhat.com>2012-09-05 21:49:00 +0530
committerSiddhesh Poyarekar <siddhesh@redhat.com>2012-09-05 21:49:30 +0530
commit6ef9cc37f0ea151a54e5c8a19950a6d5b6ff8a96 (patch)
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Return requested size for malloc_usable_size when MALLOC_CHECK_ > 0
[BZ #1349] malloc_usable_size returns the usable size in an allocated chunk, which may be >= the requested size. In the case of MALLOC_CHECK_ being exported to > 0 however, only the requested size is usable, since a magic value is written at the end of the request size to trap writes beyond request bounds. Hence, when MALLOC_CHECK_ is exported to > 0, malloc_usable_size() should return the request size.
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