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authorJohn Keeping <john@keeping.me.uk>2016-02-08 14:12:35 +0000
committerJason A. Donenfeld <Jason@zx2c4.com>2016-02-08 17:27:38 +0000
commitbdcbe0922d7099ebd61d875709ea9408bc1d7543 (patch)
treedf225a74a832eb528e0686d6286bd8a5282eb633 /scan-tree.h
parenta8b9ef8c1c68fbb9c89db2d8c12dca38c15e2bfd (diff)
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ui-stats: cast pointer before checking for zero
We abuse the "void *util" field as a counter and recently started to cast it to a uintptr_t to avoid risking nasal demons by performing arithmetic on a void pointer. However, compilers are also known to do "interesting" things if they know that a pointer is or isn't NULL. Make this safer by checking if the counter (after casting) is non-zero rather than checking if the pointer is non-null. Signed-off-by: John Keeping <john@keeping.me.uk>
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