2016-08-19  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

libcpp/
	* expr.c (eval_token): Append "evaluates to 0" to Wundef diagnostic.

testsuite/
	* gcc.dg/cpp/warn-undef.c: Append "evaluates to 0" to dg-error.
	* gcc.dg/cpp/warn-undef-2.c: Likewise.

From-SVN: r239609