--- /dev/null
+// Tests that the behavior will be good if there are multiple operator delete in the promise_type.
+// RUN: %clang_cc1 %s -std=c++20 %s -fsyntax-only -verify
+// expected-no-diagnostics
+
+#include "Inputs/std-coroutine.h"
+
+namespace std {
+ typedef __SIZE_TYPE__ size_t;
+ enum class align_val_t : size_t {};
+}
+
+struct task {
+ struct promise_type {
+ auto initial_suspend() { return std::suspend_always{}; }
+ auto final_suspend() noexcept { return std::suspend_always{}; }
+ auto get_return_object() { return task{}; }
+ void unhandled_exception() {}
+ void return_value(int) {}
+
+ void operator delete(void *ptr, void *meaningless_placeholder);
+ void operator delete(void *ptr);
+ };
+};
+
+task f() {
+ co_return 43;
+}
--- /dev/null
+// Test that if the compiler will emit error message if the promise_type contain
+// operator delete but none of them are available. This is required by the standard.
+// RUN: %clang_cc1 %s -std=c++20 %s -fsyntax-only -verify
+
+#include "Inputs/std-coroutine.h"
+
+namespace std {
+ typedef __SIZE_TYPE__ size_t;
+ enum class align_val_t : size_t {};
+}
+
+struct task {
+ struct promise_type {
+ auto initial_suspend() { return std::suspend_always{}; }
+ auto final_suspend() noexcept { return std::suspend_always{}; }
+ auto get_return_object() { return task{}; }
+ void unhandled_exception() {}
+ void return_value(int) {}
+
+ void operator delete(void *ptr, void *meaningless_placeholder); // expected-note {{member 'operator delete' declared here}}
+ };
+};
+
+task f() { // expected-error 1+{{no suitable member 'operator delete' in 'promise_type'}}
+ co_return 43;
+}