1 // RUN: %clang_cc1 -std=c++11 -fcoroutines %s -verify 2 3 template<typename T, typename U> 4 U f(T t) { 5 co_await t; 6 co_yield t; 7 8 1 + co_await t; 9 1 + co_yield t; // expected-error {{expected expression}} 10 11 auto x = co_await t; 12 auto y = co_yield t; 13 14 for co_await (int x : t) {} 15 for co_await (int x = 0; x != 10; ++x) {} // expected-error {{'co_await' modifier can only be applied to range-based for loop}} 16 17 if (t) 18 co_return t; 19 else 20 co_return {t}; 21 } 22 23 struct Y {}; 24 struct X { Y operator co_await(); }; 25 struct Z {}; 26 Y operator co_await(Z); 27 28 void f(X x, Z z) { 29 x.operator co_await(); 30 operator co_await(z); 31 } 32 33 void operator co_await(); // expected-error {{must have at least one parameter}} 34 void operator co_await(X, Y, Z); // expected-error {{must be a unary operator}} 35 void operator co_await(int); // expected-error {{parameter of class or enumeration type}} 36
