re PR c++/56643 (Failure to match noexcept specifier of friend template function in template class)

2019-04-04  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/56643
	* g++.dg/cpp0x/noexcept40.C: New.

From-SVN: r270144

gcc/testsuite/ChangeLog

+2019-04-04  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/56643
+	* g++.dg/cpp0x/noexcept40.C: New.
+
 2019-04-03  Dominique d'Humieres  <dominiq@gcc.gnu.org>
 
 	PR fortran/68567

gcc/testsuite/g++.dg/cpp0x/noexcept40.C

+// PR c++/56643
+// { dg-do compile { target c++11 } }
+
+template <int N>
+struct Test {
+    template <int M>
+    friend void test(Test<M>& arg) noexcept(M == 0);
+};
+
+template <int N>
+void test(Test<N>& arg) noexcept(N == 0) {}
+
+int main() {
+    Test<0> t;
+    test(t);
+    return 0;
+}