re PR c++/11856 (unsigned warning in template)

re PR c++/11856 (unsigned warning in template)

/cp
2012-05-15  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/11586
	* pt.c (tsubst_copy_and_build): Increase / decrease
	c_inhibit_evaluation_warnings around build_x_binary_op call.

/c-family
2012-05-15  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/11586
	* c-common.c (shorten_compare): Check c_inhibit_evaluation_warnings.

/testsuite
2012-05-15  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/11586
	* g++.dg/warn/Wtype-limits.C: Don't warn in templates.
	* g++.dg/warn/Wtype-limits-Wextra.C: Likewise.

From-SVN: r187542