clang/test/SemaCXX/coroutine-seh.cpp

   1 // RUN: %clang_cc1 -std=c++20 -verify %s -fcxx-exceptions -fexceptions -triple x86_64-windows-msvc -fms-extensions
   2 namespace std {
   3 template <typename... T> struct coroutine_traits;
   4
   5 template <class Promise = void> struct coroutine_handle {
   6   coroutine_handle() = default;
   7   static coroutine_handle from_address(void *) noexcept;
   8 };
   9 template <> struct coroutine_handle<void> {
  10   static coroutine_handle from_address(void *) noexcept;
  11   coroutine_handle() = default;
  12   template <class PromiseType>
  13   coroutine_handle(coroutine_handle<PromiseType>) noexcept;
  14 };
  15 } // namespace std
  16
  17 struct suspend_always {
  18   bool await_ready() noexcept;
  19   void await_suspend(std::coroutine_handle<>) noexcept;
  20   void await_resume() noexcept;
  21 };
  22
  23 template <> struct std::coroutine_traits<void> {
  24   struct promise_type {
  25     void get_return_object() noexcept;
  26     suspend_always initial_suspend() noexcept;
  27     suspend_always final_suspend() noexcept;
  28     void return_void() noexcept;
  29     void unhandled_exception() noexcept;
  30   };
  31 };
  32
  33 void SEH_used() {
  34   __try { // expected-error {{cannot use SEH '__try' in a coroutine when C++ exceptions are enabled}}
  35     co_return; // expected-note {{function is a coroutine due to use of 'co_return' here}}
  36   } __except(0) {}
  37 }