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