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57b4295d2b
key_buffer_size. The cause of corruption was number overflow when multiplying two ulong values, number of used keycache blocks with size of a single block. The result of multiplication exceeded ulong range (4G) and this lead to incorrectly calculated buffer offset in the key cache. The fix is to use size_t for multiplication result. This patch also fixes pointless cast in safemalloc (size of allocated block to uint), that creates lot of false alarm warnings when using big keycache (> 4GB) in debug mode.
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