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Date: Wed, 25 Nov 2020 02:53:16 -0500
From: Dominic Chen <>
Subject: [PATCH] Fix crash in malloc_usable_size() if nullptr

Please CC me on replies.

According to the manual for malloc_usable_size(), zero should be 
returned if the input pointer is NULL. Currently, this is not checked, 
which can result in SIGSEGV at runtime.



View attachment "patch.diff" of type "text/plain" (396 bytes)

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