--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/cpp1y/constexpr-loop7.C	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,21 @@
+// PR c++/87567
+// { dg-do compile { target c++14 } }
+
+constexpr bool always_false() { return false; }
+int f() { return 1; }
+
+constexpr int
+fn1 ()
+{
+  while (always_false ())
+    return f();
+  return 0;
+}
+
+constexpr int
+fn2 ()
+{
+  for (;always_false();)
+    return f();
+  return 0;
+}