gcc/c-family/ChangeLog:

2015-06-19  Mikhail Maltsev  <maltsevm@gmail.com>

	PR c++/66572
	* c-common.c (warn_logical_operator): Treat constant-initialized
	VAR_DECLs like literal constants.

gcc/testsuite/ChangeLog:

2015-06-19  Mikhail Maltsev  <maltsevm@gmail.com>

	PR c++/66572
	* c-c++-common/Wlogical-op-2.c: New test.
	* g++.dg/warn/Wlogical-op-2.C: New test.