--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/coroutines/coro-missing-ueh-1.C	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,17 @@
+//  { dg-additional-options "-fsyntax-only -fexceptions -w" }
+
+// Diagose missing unhandled_exception() in the promise type.
+
+#include "coro.h"
+#include "coro-missing-ueh.h"
+
+MissingUEH
+bar () // { dg-error {no member named 'unhandled_exception' in} }
+{ 
+  co_return;
+}
+
+int main (int ac, char *av[]) {
+  MissingUEH x = bar ();
+  return 0;
+}