--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/coroutines/torture/co-await-19-while-cond.C	Mon May 25 07:50:57 2020 +0900
@@ -0,0 +1,68 @@
+// { dg-do run }
+
+// Test co-await in while condition.
+
+#include "../coro.h"
+
+// boiler-plate for tests of codegen
+#include "../coro1-ret-int-yield-int.h"
+
+/* An awaiter that suspends always and returns a boolean as the
+   await_resume output.  */
+struct BoolAwaiter {
+  bool v;
+  BoolAwaiter (bool _v) : v(_v) {}
+  bool await_ready () { return false; }
+  void await_suspend (coro::coroutine_handle<>) {}
+  bool await_resume () { return v; }
+};
+
+//extern bool tt(void);
+int three = 3;
+struct coro1
+my_coro (bool t)
+{
+  //int three = 3;
+  while (co_await BoolAwaiter (t) && t)
+    {
+      int five = three + 2;
+      co_yield 6169 + five;
+    }
+
+  co_return 42;
+}
+
+int main ()
+{
+  PRINT ("main: create coro");
+  struct coro1 x = my_coro (false);
+
+  if (x.handle.done())
+    {
+      PRINT ("main: apparently done when we shouldn't be...");
+      abort ();
+    }
+
+  PRINT ("main: resume initial suspend");
+  x.handle.resume();
+
+  // will be false - so no yield expected.
+  PRINT ("main: while condition");
+  x.handle.resume();
+
+  int y = x.handle.promise().get_value();
+  if ( y != 42 )
+    {
+      PRINTF ("main: apparently wrong value : %d\n", y);
+      abort ();
+    }
+
+  if (!x.handle.done())
+    {
+      PRINT ("main: apparently not done...");
+      abort ();
+    }
+
+  PRINT ("main: returning");
+  return 0;
+}