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author | John Keeping | 2016-02-08 14:12:35 +0000 |
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committer | Jason A. Donenfeld | 2016-02-08 18:27:38 +0100 |
commit | bdcbe0922d7099ebd61d875709ea9408bc1d7543 (patch) | |
tree | df225a74a832eb528e0686d6286bd8a5282eb633 /ui-patch.c | |
parent | a8b9ef8c1c68fbb9c89db2d8c12dca38c15e2bfd (diff) | |
download | cgit-bdcbe0922d7099ebd61d875709ea9408bc1d7543.tar.gz |
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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