re PR c++/47461 (warn_unused_result attribute ignored for templates)

2015-08-12  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/47461
	* g++.dg/warn/Wunused-result-1.C: New.

From-SVN: r226816

gcc/testsuite/ChangeLog

+2015-08-12  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/47461
+	* g++.dg/warn/Wunused-result-1.C: New.
+
 2015-08-12  Richard Biener  <rguenther@suse.de>
 
 	* gcc.dg/tree-ssa/ssa-fre-47.c: New testcase.

gcc/testsuite/g++.dg/warn/Wunused-result-1.C

+// PR c++/47461
+
+class C {
+ public:
+  template<typename T> bool f(T* m) __attribute__((warn_unused_result));
+};
+template<typename T> inline bool C::f(T* m) { return true; }
+void f(C* pc) { int i; pc->f(&i); }  // { dg-warning "ignoring return value" }