re PR c++/71385 (Internal compiler error when using concept as placeholder)

2017-10-27  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/71385
	* g++.dg/concepts/pr71385.C: New.

From-SVN: r254139

gcc/testsuite/ChangeLog

 2017-10-27  Paolo Carlini  <paolo.carlini@oracle.com>
 
+	PR c++/71385
+	* g++.dg/concepts/pr71385.C: New.
+
+2017-10-27  Paolo Carlini  <paolo.carlini@oracle.com>
+
 	PR c++/80739
 	* g++.dg/cpp1y/constexpr-80739.C: New.
 

gcc/testsuite/g++.dg/concepts/pr71385.C

+// { dg-options "-std=c++17 -fconcepts" }
+
+template<class T>
+concept bool Addable(){
+ return requires(T x){
+  {x + x} -> T;
+ };
+}
+
+int main(){
+ Addable t = 0;
+}