1 files changed, 35 insertions, 0 deletions
diff --git a/test/Parser/cxx1z-coroutines.cpp b/test/Parser/cxx1z-coroutines.cpp
new file mode 100644
index 000000000000..3e698404a600
--- /dev/null
+++ b/test/Parser/cxx1z-coroutines.cpp
@@ -0,0 +1,35 @@
+// RUN: %clang_cc1 -std=c++11 -fcoroutines %s -verify
+
+template<typename T, typename U>
+U f(T t) {
+  co_await t;
+  co_yield t;
+
+  1 + co_await t;
+  1 + co_yield t; // expected-error {{expected expression}}
+
+  auto x = co_await t;
+  auto y = co_yield t;
+
+  for co_await (int x : t) {}
+  for co_await (int x = 0; x != 10; ++x) {} // expected-error {{'co_await' modifier can only be applied to range-based for loop}}
+
+  if (t)
+    co_return t;
+  else
+    co_return {t};
+}
+
+struct Y {};
+struct X { Y operator co_await(); };
+struct Z {};
+Y operator co_await(Z);
+
+void f(X x, Z z) {
+  x.operator co_await();
+  operator co_await(z);
+}
+
+void operator co_await(); // expected-error {{must have at least one parameter}}
+void operator co_await(X, Y, Z); // expected-error {{must be a unary operator}}
+void operator co_await(int); // expected-error {{parameter of class or enumeration type}}