forked from OSchip/llvm-project
75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
// Verify that coroutine promise and allocated memory are freed up on exception.
|
|
// RUN: %clang_cc1 -std=c++1z -fcoroutines-ts -triple=x86_64-unknown-linux-gnu -emit-llvm -o - %s -fexceptions -fcxx-exceptions -disable-llvm-passes | FileCheck %s
|
|
|
|
namespace std::experimental {
|
|
template <typename... T> struct coroutine_traits;
|
|
|
|
template <class Promise = void> struct coroutine_handle {
|
|
coroutine_handle() = default;
|
|
static coroutine_handle from_address(void *) { return {}; }
|
|
};
|
|
template <> struct coroutine_handle<void> {
|
|
static coroutine_handle from_address(void *) { return {}; }
|
|
coroutine_handle() = default;
|
|
template <class PromiseType>
|
|
coroutine_handle(coroutine_handle<PromiseType>) {}
|
|
};
|
|
}
|
|
|
|
struct suspend_always {
|
|
bool await_ready();
|
|
void await_suspend(std::experimental::coroutine_handle<>);
|
|
void await_resume();
|
|
};
|
|
|
|
template <> struct std::experimental::coroutine_traits<void> {
|
|
struct promise_type {
|
|
void get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_always final_suspend();
|
|
void return_void();
|
|
promise_type();
|
|
~promise_type();
|
|
void unhandled_exception();
|
|
};
|
|
};
|
|
|
|
struct Cleanup { ~Cleanup(); };
|
|
void may_throw();
|
|
|
|
// CHECK: define void @_Z1fv(
|
|
void f() {
|
|
// CHECK: call i8* @_Znwm(i64
|
|
|
|
// If promise constructor throws, check that we free the memory.
|
|
|
|
// CHECK: invoke void @_ZNSt12experimental16coroutine_traitsIJvEE12promise_typeC1Ev(
|
|
// CHECK-NEXT: to label %{{.+}} unwind label %[[DeallocPad:.+]]
|
|
|
|
Cleanup cleanup;
|
|
may_throw();
|
|
|
|
// if may_throw throws, check that we destroy the promise and free the memory.
|
|
|
|
// CHECK: invoke void @_Z9may_throwv(
|
|
// CHECK-NEXT: to label %{{.+}} unwind label %[[PromDtorPad:.+]]
|
|
|
|
// CHECK: [[DeallocPad]]:
|
|
// CHECK-NEXT: landingpad
|
|
// CHECK-NEXT: cleanup
|
|
// CHECK: br label %[[Dealloc:.+]]
|
|
|
|
// CHECK: [[PromDtorPad]]:
|
|
// CHECK-NEXT: landingpad
|
|
// CHECK-NEXT: cleanup
|
|
// CHECK: call void @_ZN7CleanupD1Ev(%struct.Cleanup*
|
|
// CHECK: call void @_ZNSt12experimental16coroutine_traitsIJvEE12promise_typeD1Ev(
|
|
// CHECK: br label %[[Dealloc]]
|
|
|
|
// CHECK: [[Dealloc]]:
|
|
// CHECK: %[[Mem:.+]] = call i8* @llvm.coro.free(
|
|
// CHECK: call void @_ZdlPv(i8* %[[Mem]])
|
|
|
|
co_return;
|
|
}
|