bee782bb92
Summary: Certain implicitly generated coroutine statements, such as the calls to 'return_value()' or `return_void()` or `get_return_object_on_allocation_failure()`, cannot be built until the promise type is no longer dependent. This means they are not built until after the coroutine body statement has been transformed. This patch fixes an issue where these statements would never be built for coroutine templates. It also fixes a small issue where diagnostics about `get_return_object_on_allocation_failure()` were incorrectly suppressed. Reviewers: rsmith, majnemer, GorNishanov, aaron.ballman Reviewed By: GorNishanov Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D31487 llvm-svn: 299380
697 lines
24 KiB
C++
697 lines
24 KiB
C++
// RUN: %clang_cc1 -std=c++14 -fcoroutines-ts -verify %s -fcxx-exceptions -fexceptions
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void no_coroutine_traits_bad_arg_await() {
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co_await a; // expected-error {{include <experimental/coroutine>}}
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// expected-error@-1 {{use of undeclared identifier 'a'}}
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}
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void no_coroutine_traits_bad_arg_yield() {
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co_yield a; // expected-error {{include <experimental/coroutine>}}
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// expected-error@-1 {{use of undeclared identifier 'a'}}
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}
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void no_coroutine_traits_bad_arg_return() {
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co_return a; // expected-error {{include <experimental/coroutine>}}
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// expected-error@-1 {{use of undeclared identifier 'a'}}
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}
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void no_coroutine_traits() {
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co_await 4; // expected-error {{std::experimental::coroutine_traits type was not found; include <experimental/coroutine>}}
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}
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namespace std {
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namespace experimental {
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template <typename... T>
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struct coroutine_traits; // expected-note {{declared here}}
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}} // namespace std::experimental
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template<typename Promise> struct coro {};
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template <typename Promise, typename... Ps>
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struct std::experimental::coroutine_traits<coro<Promise>, Ps...> {
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using promise_type = Promise;
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};
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struct awaitable {
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bool await_ready();
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template <typename F> void await_suspend(F);
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void await_resume();
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} a;
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struct suspend_always {
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bool await_ready() { return false; }
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template <typename F> void await_suspend(F);
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void await_resume() {}
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};
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struct suspend_never {
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bool await_ready() { return true; }
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template <typename F> void await_suspend(F);
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void await_resume() {}
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};
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void no_specialization() {
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co_await a; // expected-error {{implicit instantiation of undefined template 'std::experimental::coroutine_traits<void>'}}
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}
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template <typename... T>
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struct std::experimental::coroutine_traits<int, T...> {};
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int no_promise_type() { // expected-error {{this function cannot be a coroutine: 'std::experimental::coroutine_traits<int>' has no member named 'promise_type'}}
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co_await a;
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}
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template <>
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struct std::experimental::coroutine_traits<double, double> { typedef int promise_type; };
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double bad_promise_type(double) { // expected-error {{this function cannot be a coroutine: 'experimental::coroutine_traits<double, double>::promise_type' (aka 'int') is not a class}}
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co_await a;
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}
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template <>
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struct std::experimental::coroutine_traits<double, int> {
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struct promise_type {};
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};
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double bad_promise_type_2(int) { // expected-error {{no member named 'initial_suspend'}}
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co_yield 0; // expected-error {{no member named 'yield_value' in 'std::experimental::coroutine_traits<double, int>::promise_type'}}
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}
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struct promise; // expected-note {{forward declaration}}
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struct promise_void;
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struct void_tag {};
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template <typename... T>
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struct std::experimental::coroutine_traits<void, T...> { using promise_type = promise; };
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template <typename... T>
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struct std::experimental::coroutine_traits<void, void_tag, T...>
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{ using promise_type = promise_void; };
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// FIXME: This diagnostic is terrible.
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void undefined_promise() { // expected-error {{this function cannot be a coroutine: 'experimental::coroutine_traits<void>::promise_type' (aka 'promise') is an incomplete type}}
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co_await a;
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}
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struct yielded_thing { const char *p; short a, b; };
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struct not_awaitable {};
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struct promise {
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void get_return_object();
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suspend_always initial_suspend();
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suspend_always final_suspend();
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awaitable yield_value(int); // expected-note 2{{candidate}}
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awaitable yield_value(yielded_thing); // expected-note 2{{candidate}}
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not_awaitable yield_value(void()); // expected-note 2{{candidate}}
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void return_value(int); // expected-note 2{{here}}
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void unhandled_exception();
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};
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struct promise_void {
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void get_return_object();
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suspend_always initial_suspend();
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suspend_always final_suspend();
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void return_void();
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void unhandled_exception();
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};
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void no_coroutine_handle() { // expected-error {{std::experimental::coroutine_handle type was not found; include <experimental/coroutine> before defining a coroutine}}
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//expected-note@-1 {{call to 'initial_suspend' implicitly required by the initial suspend point}}
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co_return 5; //expected-note {{function is a coroutine due to use of 'co_return' here}}
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}
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namespace std {
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namespace experimental {
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template <class PromiseType = void>
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struct coroutine_handle {
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static coroutine_handle from_address(void *);
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};
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template <>
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struct coroutine_handle<void> {
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template <class PromiseType>
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coroutine_handle(coroutine_handle<PromiseType>);
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static coroutine_handle from_address(void *);
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};
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}} // namespace std::experimental
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void yield() {
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co_yield 0;
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co_yield {"foo", 1, 2};
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co_yield {1e100}; // expected-error {{cannot be narrowed}} expected-note {{explicit cast}} expected-warning {{changes value}} expected-warning {{braces around scalar}}
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co_yield {"foo", __LONG_LONG_MAX__}; // expected-error {{cannot be narrowed}} expected-note {{explicit cast}} expected-warning {{changes value}}
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co_yield {"foo"};
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co_yield "foo"; // expected-error {{no matching}}
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co_yield 1.0;
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co_yield yield; // expected-error {{no member named 'await_ready' in 'not_awaitable'}}
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}
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void coreturn(int n) {
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co_await a;
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if (n == 0)
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co_return 3;
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if (n == 1)
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co_return {4}; // expected-warning {{braces around scalar initializer}}
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if (n == 2)
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co_return "foo"; // expected-error {{cannot initialize a parameter of type 'int' with an lvalue of type 'const char [4]'}}
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co_return 42;
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}
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template <class T>
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void co_await_non_dependent_arg(T) {
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co_await a;
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}
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template void co_await_non_dependent_arg(int);
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void mixed_yield() {
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co_yield 0; // expected-note {{use of 'co_yield'}}
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return; // expected-error {{not allowed in coroutine}}
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}
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void mixed_yield_invalid() {
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co_yield blah; // expected-error {{use of undeclared identifier}}
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// expected-note@-1 {{function is a coroutine due to use of 'co_yield'}}
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return; // expected-error {{return statement not allowed in coroutine}}
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}
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template <class T>
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void mixed_yield_template(T) {
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co_yield blah; // expected-error {{use of undeclared identifier}}
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// expected-note@-1 {{function is a coroutine due to use of 'co_yield'}}
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return; // expected-error {{return statement not allowed in coroutine}}
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}
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template <class T>
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void mixed_yield_template2(T) {
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co_yield 42;
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// expected-note@-1 {{function is a coroutine due to use of 'co_yield'}}
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return; // expected-error {{return statement not allowed in coroutine}}
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}
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template <class T>
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void mixed_yield_template3(T v) {
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co_yield blah(v);
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// expected-note@-1 {{function is a coroutine due to use of 'co_yield'}}
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return; // expected-error {{return statement not allowed in coroutine}}
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}
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void mixed_await() {
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co_await a; // expected-note {{use of 'co_await'}}
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return; // expected-error {{not allowed in coroutine}}
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}
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void mixed_await_invalid() {
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co_await 42; // expected-error {{'int' is not a structure or union}}
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// expected-note@-1 {{function is a coroutine due to use of 'co_await'}}
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return; // expected-error {{not allowed in coroutine}}
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}
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template <class T>
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void mixed_await_template(T) {
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co_await 42;
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// expected-note@-1 {{function is a coroutine due to use of 'co_await'}}
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return; // expected-error {{not allowed in coroutine}}
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}
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template <class T>
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void mixed_await_template2(T v) {
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co_await v; // expected-error {{'long' is not a structure or union}}
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// expected-note@-1 {{function is a coroutine due to use of 'co_await'}}
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return; // expected-error {{not allowed in coroutine}}
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}
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template void mixed_await_template2(long); // expected-note {{requested here}}
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void only_coreturn(void_tag) {
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co_return; // OK
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}
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void mixed_coreturn(void_tag, bool b) {
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if (b)
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co_return; // expected-note {{use of 'co_return'}}
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else
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return; // expected-error {{not allowed in coroutine}}
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}
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void mixed_coreturn_invalid(bool b) {
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if (b)
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co_return; // expected-note {{use of 'co_return'}}
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// expected-error@-1 {{no member named 'return_void' in 'promise'}}
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else
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return; // expected-error {{not allowed in coroutine}}
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}
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template <class T>
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void mixed_coreturn_template(void_tag, bool b, T v) {
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if (b)
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co_return v; // expected-note {{use of 'co_return'}}
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// expected-error@-1 {{no member named 'return_value' in 'promise_void'}}
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else
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return; // expected-error {{not allowed in coroutine}}
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}
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template void mixed_coreturn_template(void_tag, bool, int); // expected-note {{requested here}}
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template <class T>
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void mixed_coreturn_template2(bool b, T) {
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if (b)
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co_return v; // expected-note {{use of 'co_return'}}
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// expected-error@-1 {{use of undeclared identifier 'v'}}
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else
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return; // expected-error {{not allowed in coroutine}}
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}
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struct CtorDtor {
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CtorDtor() {
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co_yield 0; // expected-error {{'co_yield' cannot be used in a constructor}}
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}
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CtorDtor(awaitable a) {
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// The spec doesn't say this is ill-formed, but it must be.
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co_await a; // expected-error {{'co_await' cannot be used in a constructor}}
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}
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~CtorDtor() {
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co_return 0; // expected-error {{'co_return' cannot be used in a destructor}}
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}
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// FIXME: The spec says this is ill-formed.
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void operator=(CtorDtor&) {
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co_yield 0; // expected-error {{'co_yield' cannot be used in a copy assignment operator}}
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}
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void operator=(CtorDtor const &) {
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co_yield 0; // expected-error {{'co_yield' cannot be used in a copy assignment operator}}
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}
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void operator=(CtorDtor &&) {
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co_await a; // expected-error {{'co_await' cannot be used in a move assignment operator}}
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}
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void operator=(CtorDtor const &&) {
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co_await a; // expected-error {{'co_await' cannot be used in a move assignment operator}}
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}
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void operator=(int) {
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co_await a; // OK. Not a special member
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}
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};
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void unevaluated() {
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decltype(co_await a); // expected-error {{cannot be used in an unevaluated context}}
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sizeof(co_await a); // expected-error {{cannot be used in an unevaluated context}}
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typeid(co_await a); // expected-error {{cannot be used in an unevaluated context}}
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decltype(co_yield a); // expected-error {{cannot be used in an unevaluated context}}
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sizeof(co_yield a); // expected-error {{cannot be used in an unevaluated context}}
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typeid(co_yield a); // expected-error {{cannot be used in an unevaluated context}}
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}
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constexpr auto constexpr_deduced_return_coroutine() {
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co_yield 0; // expected-error {{'co_yield' cannot be used in a constexpr function}}
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// expected-error@-1 {{'co_yield' cannot be used in a function with a deduced return type}}
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}
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void varargs_coroutine(const char *, ...) {
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co_await a; // expected-error {{'co_await' cannot be used in a varargs function}}
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}
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auto deduced_return_coroutine() {
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co_await a; // expected-error {{'co_await' cannot be used in a function with a deduced return type}}
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}
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struct outer {};
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struct await_arg_1 {};
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struct await_arg_2 {};
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namespace adl_ns {
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struct coawait_arg_type {};
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awaitable operator co_await(coawait_arg_type);
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}
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namespace dependent_operator_co_await_lookup {
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template<typename T> void await_template(T t) {
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// no unqualified lookup results
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co_await t; // expected-error {{no member named 'await_ready' in 'dependent_operator_co_await_lookup::not_awaitable'}}
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// expected-error@-1 {{call to function 'operator co_await' that is neither visible in the template definition nor found by argument-dependent lookup}}
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};
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template void await_template(awaitable);
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struct indirectly_awaitable { indirectly_awaitable(outer); };
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awaitable operator co_await(indirectly_awaitable); // expected-note {{should be declared prior to}}
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template void await_template(indirectly_awaitable);
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struct not_awaitable {};
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template void await_template(not_awaitable); // expected-note {{instantiation}}
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template<typename T> void await_template_2(T t) {
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// one unqualified lookup result
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co_await t;
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};
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template void await_template(outer); // expected-note {{instantiation}}
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template void await_template_2(outer);
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struct transform_awaitable {};
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struct transformed {};
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struct transform_promise {
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typedef transform_awaitable await_arg;
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coro<transform_promise> get_return_object();
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transformed initial_suspend();
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::adl_ns::coawait_arg_type final_suspend();
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transformed await_transform(transform_awaitable);
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void unhandled_exception();
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};
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template <class AwaitArg>
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struct basic_promise {
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typedef AwaitArg await_arg;
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coro<basic_promise> get_return_object();
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awaitable initial_suspend();
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awaitable final_suspend();
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void unhandled_exception();
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};
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awaitable operator co_await(await_arg_1);
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template <typename T, typename U>
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coro<T> await_template_3(U t) {
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co_await t;
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}
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template coro<basic_promise<await_arg_1>> await_template_3<basic_promise<await_arg_1>>(await_arg_1);
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template <class T, int I = 0>
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struct dependent_member {
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coro<T> mem_fn() const {
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co_await typename T::await_arg{}; // expected-error {{call to function 'operator co_await'}}}
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}
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template <class U>
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coro<T> dep_mem_fn(U t) {
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co_await t;
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}
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};
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template <>
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struct dependent_member<long> {
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// FIXME this diagnostic is terrible
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coro<transform_promise> mem_fn() const { // expected-error {{no member named 'await_ready' in 'dependent_operator_co_await_lookup::transformed'}}
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// expected-note@-1 {{call to 'initial_suspend' implicitly required by the initial suspend point}}
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// expected-note@+1 {{function is a coroutine due to use of 'co_await' here}}
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co_await transform_awaitable{};
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// expected-error@-1 {{no member named 'await_ready'}}
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}
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template <class R, class U>
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coro<R> dep_mem_fn(U u) { co_await u; }
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};
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awaitable operator co_await(await_arg_2); // expected-note {{'operator co_await' should be declared prior to the call site}}
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template struct dependent_member<basic_promise<await_arg_1>, 0>;
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template struct dependent_member<basic_promise<await_arg_2>, 0>; // expected-note {{in instantiation}}
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template <>
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coro<transform_promise>
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// FIXME this diagnostic is terrible
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dependent_member<long>::dep_mem_fn<transform_promise>(int) { // expected-error {{no member named 'await_ready' in 'dependent_operator_co_await_lookup::transformed'}}
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//expected-note@-1 {{call to 'initial_suspend' implicitly required by the initial suspend point}}
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//expected-note@+1 {{function is a coroutine due to use of 'co_await' here}}
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co_await transform_awaitable{};
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// expected-error@-1 {{no member named 'await_ready'}}
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}
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void operator co_await(transform_awaitable) = delete;
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awaitable operator co_await(transformed);
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template coro<transform_promise>
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dependent_member<long>::dep_mem_fn<transform_promise>(transform_awaitable);
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template <>
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coro<transform_promise> dependent_member<long>::dep_mem_fn<transform_promise>(long) {
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co_await transform_awaitable{};
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}
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template <>
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struct dependent_member<int> {
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coro<transform_promise> mem_fn() const {
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co_await transform_awaitable{};
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}
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};
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template coro<transform_promise> await_template_3<transform_promise>(transform_awaitable);
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template struct dependent_member<transform_promise>;
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template coro<transform_promise> dependent_member<transform_promise>::dep_mem_fn(transform_awaitable);
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}
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struct yield_fn_tag {};
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template <>
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struct std::experimental::coroutine_traits<void, yield_fn_tag> {
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struct promise_type {
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// FIXME: add an await_transform overload for functions
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awaitable yield_value(int());
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void return_value(int());
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suspend_never initial_suspend();
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suspend_never final_suspend();
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void get_return_object();
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void unhandled_exception();
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};
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};
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namespace placeholder {
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awaitable f(), f(int); // expected-note 4{{possible target}}
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int g(), g(int); // expected-note 2{{candidate}}
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void x() {
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co_await f; // expected-error {{reference to overloaded function}}
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}
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void y() {
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co_yield g; // expected-error {{no matching member function for call to 'yield_value'}}
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}
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void z() {
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co_await a;
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co_return g; // expected-error {{address of overloaded function 'g' does not match required type 'int'}}
|
|
}
|
|
|
|
void x(yield_fn_tag) {
|
|
co_await f; // expected-error {{reference to overloaded function}}
|
|
}
|
|
void y(yield_fn_tag) {
|
|
co_yield g;
|
|
}
|
|
void z(yield_fn_tag) {
|
|
co_await a;
|
|
co_return g;
|
|
}
|
|
}
|
|
|
|
struct bad_promise_1 {
|
|
suspend_always initial_suspend();
|
|
suspend_always final_suspend();
|
|
void unhandled_exception();
|
|
};
|
|
coro<bad_promise_1> missing_get_return_object() { // expected-error {{no member named 'get_return_object' in 'bad_promise_1'}}
|
|
co_await a;
|
|
}
|
|
|
|
struct bad_promise_2 {
|
|
coro<bad_promise_2> get_return_object();
|
|
// FIXME: We shouldn't offer a typo-correction here!
|
|
suspend_always final_suspend(); // expected-note {{here}}
|
|
void unhandled_exception();
|
|
};
|
|
// FIXME: This shouldn't happen twice
|
|
coro<bad_promise_2> missing_initial_suspend() { // expected-error {{no member named 'initial_suspend' in 'bad_promise_2'}}
|
|
co_await a;
|
|
}
|
|
|
|
struct bad_promise_3 {
|
|
coro<bad_promise_3> get_return_object();
|
|
// FIXME: We shouldn't offer a typo-correction here!
|
|
suspend_always initial_suspend(); // expected-note {{here}}
|
|
void unhandled_exception();
|
|
};
|
|
coro<bad_promise_3> missing_final_suspend() { // expected-error {{no member named 'final_suspend' in 'bad_promise_3'}}
|
|
co_await a;
|
|
}
|
|
|
|
struct bad_promise_4 {
|
|
coro<bad_promise_4> get_return_object();
|
|
not_awaitable initial_suspend();
|
|
suspend_always final_suspend();
|
|
};
|
|
// FIXME: This diagnostic is terrible.
|
|
coro<bad_promise_4> bad_initial_suspend() { // expected-error {{no member named 'await_ready' in 'not_awaitable'}}
|
|
// expected-note@-1 {{call to 'initial_suspend' implicitly required by the initial suspend point}}
|
|
co_await a; // expected-note {{function is a coroutine due to use of 'co_await' here}}
|
|
}
|
|
|
|
struct bad_promise_5 {
|
|
coro<bad_promise_5> get_return_object();
|
|
suspend_always initial_suspend();
|
|
not_awaitable final_suspend();
|
|
};
|
|
// FIXME: This diagnostic is terrible.
|
|
coro<bad_promise_5> bad_final_suspend() { // expected-error {{no member named 'await_ready' in 'not_awaitable'}}
|
|
// expected-note@-1 {{call to 'final_suspend' implicitly required by the final suspend point}}
|
|
co_await a; // expected-note {{function is a coroutine due to use of 'co_await' here}}
|
|
}
|
|
|
|
struct bad_promise_6 {
|
|
coro<bad_promise_6> get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_always final_suspend();
|
|
void unhandled_exception();
|
|
void return_void();
|
|
void return_value(int) const;
|
|
void return_value(int);
|
|
};
|
|
coro<bad_promise_6> bad_implicit_return() { // expected-error {{'bad_promise_6' declares both 'return_value' and 'return_void'}}
|
|
co_await a;
|
|
}
|
|
|
|
template <class T>
|
|
coro<T> bad_implicit_return_dependent(T) { // expected-error {{'bad_promise_6' declares both 'return_value' and 'return_void'}}
|
|
co_await a;
|
|
}
|
|
template coro<bad_promise_6> bad_implicit_return_dependent(bad_promise_6); // expected-note {{in instantiation}}
|
|
|
|
struct bad_promise_7 {
|
|
coro<bad_promise_7> get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_always final_suspend();
|
|
void return_void();
|
|
};
|
|
coro<bad_promise_7> no_unhandled_exception() { // expected-error {{'bad_promise_7' is required to declare the member 'unhandled_exception()'}}
|
|
co_await a;
|
|
}
|
|
|
|
template <class T>
|
|
coro<T> no_unhandled_exception_dependent(T) { // expected-error {{'bad_promise_7' is required to declare the member 'unhandled_exception()'}}
|
|
co_await a;
|
|
}
|
|
template coro<bad_promise_7> no_unhandled_exception_dependent(bad_promise_7); // expected-note {{in instantiation}}
|
|
|
|
struct bad_promise_base {
|
|
private:
|
|
void return_void();
|
|
};
|
|
struct bad_promise_8 : bad_promise_base {
|
|
coro<bad_promise_8> get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_always final_suspend();
|
|
void unhandled_exception() __attribute__((unavailable)); // expected-note 2 {{made unavailable}}
|
|
void unhandled_exception() const; // expected-note 2 {{candidate}}
|
|
void unhandled_exception(void *) const; // expected-note 2 {{requires 1 argument, but 0 were provided}}
|
|
};
|
|
coro<bad_promise_8> calls_unhandled_exception() {
|
|
// expected-error@-1 {{call to unavailable member function 'unhandled_exception'}}
|
|
// FIXME: also warn about private 'return_void' here. Even though building
|
|
// the call to unhandled_exception has already failed.
|
|
co_await a;
|
|
}
|
|
|
|
template <class T>
|
|
coro<T> calls_unhandled_exception_dependent(T) {
|
|
// expected-error@-1 {{call to unavailable member function 'unhandled_exception'}}
|
|
co_await a;
|
|
}
|
|
template coro<bad_promise_8> calls_unhandled_exception_dependent(bad_promise_8); // expected-note {{in instantiation}}
|
|
|
|
struct bad_promise_9 {
|
|
coro<bad_promise_9> get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_always final_suspend();
|
|
void await_transform(void *); // expected-note {{candidate}}
|
|
awaitable await_transform(int) __attribute__((unavailable)); // expected-note {{explicitly made unavailable}}
|
|
void return_void();
|
|
void unhandled_exception();
|
|
};
|
|
coro<bad_promise_9> calls_await_transform() {
|
|
co_await 42; // expected-error {{call to unavailable member function 'await_transform'}}
|
|
// expected-note@-1 {{call to 'await_transform' implicitly required by 'co_await' here}}
|
|
}
|
|
|
|
struct bad_promise_10 {
|
|
coro<bad_promise_10> get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_always final_suspend();
|
|
int await_transform;
|
|
void return_void();
|
|
void unhandled_exception();
|
|
};
|
|
coro<bad_promise_10> bad_coawait() {
|
|
// FIXME this diagnostic is terrible
|
|
co_await 42; // expected-error {{called object type 'int' is not a function or function pointer}}
|
|
// expected-note@-1 {{call to 'await_transform' implicitly required by 'co_await' here}}
|
|
}
|
|
|
|
struct call_operator {
|
|
template <class... Args>
|
|
awaitable operator()(Args...) const { return a; }
|
|
};
|
|
void ret_void();
|
|
struct good_promise_1 {
|
|
coro<good_promise_1> get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_always final_suspend();
|
|
void unhandled_exception();
|
|
static const call_operator await_transform;
|
|
using Fn = void (*)();
|
|
Fn return_void = ret_void;
|
|
};
|
|
const call_operator good_promise_1::await_transform;
|
|
coro<good_promise_1> ok_static_coawait() {
|
|
// FIXME this diagnostic is terrible
|
|
co_await 42;
|
|
}
|
|
|
|
template<> struct std::experimental::coroutine_traits<int, int, const char**>
|
|
{ using promise_type = promise; };
|
|
|
|
int main(int, const char**) {
|
|
co_await a; // expected-error {{'co_await' cannot be used in the 'main' function}}
|
|
}
|
|
|
|
struct good_promise_2 {
|
|
float get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_always final_suspend();
|
|
void return_void();
|
|
void unhandled_exception();
|
|
};
|
|
template<> struct std::experimental::coroutine_handle<good_promise_2> {};
|
|
|
|
template<> struct std::experimental::coroutine_traits<float>
|
|
{ using promise_type = good_promise_2; };
|
|
|
|
float badly_specialized_coro_handle() { // expected-error {{std::experimental::coroutine_handle missing a member named 'from_address'}}
|
|
//expected-note@-1 {{call to 'initial_suspend' implicitly required by the initial suspend point}}
|
|
co_return; //expected-note {{function is a coroutine due to use of 'co_return' here}}
|
|
}
|
|
|
|
struct promise_on_alloc_failure_tag {};
|
|
|
|
template<>
|
|
struct std::experimental::coroutine_traits<int, promise_on_alloc_failure_tag> {
|
|
struct promise_type {
|
|
int get_return_object() {}
|
|
suspend_always initial_suspend() { return {}; }
|
|
suspend_always final_suspend() { return {}; }
|
|
void return_void() {}
|
|
int get_return_object_on_allocation_failure(); // expected-error{{'promise_type': 'get_return_object_on_allocation_failure()' must be a static member function}}
|
|
void unhandled_exception();
|
|
};
|
|
};
|
|
|
|
extern "C" int f(promise_on_alloc_failure_tag) {
|
|
co_return; //expected-note {{function is a coroutine due to use of 'co_return' here}}
|
|
}
|
|
|
|
struct bad_promise_11 {
|
|
coro<bad_promise_11> get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_always final_suspend();
|
|
void unhandled_exception();
|
|
void return_void();
|
|
|
|
private:
|
|
static coro<bad_promise_11> get_return_object_on_allocation_failure(); // expected-note 2 {{declared private here}}
|
|
};
|
|
coro<bad_promise_11> private_alloc_failure_handler() {
|
|
// expected-error@-1 {{'get_return_object_on_allocation_failure' is a private member of 'bad_promise_11'}}
|
|
co_return; // FIXME: Add a "declared coroutine here" note.
|
|
}
|
|
|
|
template <class T>
|
|
coro<T> dependent_private_alloc_failure_handler(T) {
|
|
// expected-error@-1 {{'get_return_object_on_allocation_failure' is a private member of 'bad_promise_11'}}
|
|
co_return; // FIXME: Add a "declared coroutine here" note.
|
|
}
|
|
template coro<bad_promise_11> dependent_private_alloc_failure_handler(bad_promise_11);
|
|
// expected-note@-1 {{requested here}}
|