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145
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1 // { dg-additional-options "-fsyntax-only -w" }
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2 #include "coro.h"
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3
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4 struct MissingPromiseYield {
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5 coro::coroutine_handle<> handle;
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6 MissingPromiseYield () : handle (nullptr) {}
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7 MissingPromiseYield (coro::coroutine_handle<> handle) : handle (handle) {}
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8 struct missing_yield {
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9 coro::suspend_never initial_suspend() { return {}; }
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10 coro::suspend_never final_suspend() { return {}; }
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11 MissingPromiseYield get_return_object() {
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12 return MissingPromiseYield (coro::coroutine_handle<missing_yield>::from_promise (*this));
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13 }
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14 void return_value (int v) {}
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15 void unhandled_exception() { /*std::terminate();*/ };
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16 };
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17 };
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18
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19 template<> struct coro::coroutine_traits<MissingPromiseYield> {
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20 using promise_type = MissingPromiseYield::missing_yield;
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21 };
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22
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23 MissingPromiseYield
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24 bar ()
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25 {
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26 co_yield 22; // { dg-error {no member named 'yield_value' in} }
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27 co_return 0;
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28 }
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29
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30 int main (int ac, char *av[]) {
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31 MissingPromiseYield x = bar ();
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32 return 0;
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33 }
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