Fix undefined NULL pointer arithmetic
authorMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Thu, 28 Nov 2013 17:41:13 +0000 (18:41 +0100)
committerMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Thu, 28 Nov 2013 17:47:05 +0000 (18:47 +0100)
commit63334ffb3ed3effe3824a8e952556ce687a7fd28
tree00f6f900a965e1c510ce1f611493099ac48b824c
parentb52a3dc23521f7a21fb5ab3d2b53dad89c586ee4
Fix undefined NULL pointer arithmetic

Clang 3.3 with -O2 optimisations is especially picky about arithmetic
on NULL pointers. This undefined behavior is turned into optimized out
NULL checks by clang 3.3. Fix the undefined behavior by checking against
the pointer directly, without going back and forth around NULL with
pointer arithmetic.

Reported-by: Zifei Tong <soariez@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
urcu/rculfhash.h
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