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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 18:27:38 +0100
commitbdcbe0922d7099ebd61d875709ea9408bc1d7543 (patch)
treedf225a74a832eb528e0686d6286bd8a5282eb633 /ui-summary.c
parentui-stats: if we're going to abuse void*, do it safely (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>
Diffstat (limited to 'ui-summary.c')
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