| Issue |
61508
|
| Summary |
Destroying a coroutine suspended in a list-initializer forgets some destructors
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
Alcaro
|
```c++
#include <coroutine>
#include <memory>
struct simple {
std::coroutine_handle<void> handle;
struct promise_type {
simple get_return_object() { return {std::coroutine_handle<promise_type>::from_promise(*this)}; }
void return_void() {}
void unhandled_exception() {}
auto initial_suspend() noexcept { return std::suspend_never{}; }
auto final_suspend() noexcept { return std::suspend_never{}; }
};
};
simple struct_compound_expr() {
std::unique_ptr<int> k[] = {
std::make_unique<int>(5),
(co_await std::suspend_always{}, nullptr )
};
}
int main() {
auto routine = struct_compound_expr();
routine.handle.destroy();
return 0;
}
```
Compile and run with -std=c++20 -fsanitize=address. https://godbolt.org/z/1YTW8nbKr
Expected result: Destruct the unique_ptr; print nothing and return 0.
Actual:
```
==1==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 4 byte(s) in 1 object(s) allocated from:
#0 0x55677ed6b37d in operator new(unsigned long) /root/llvm-project/compiler-rt/lib/asan/asan_new_delete.cpp:95:3
#1 0x55677ed71294 in std::__detail::_MakeUniq<int>::__single_object std::make_unique<int, int>(int&&) /opt/compiler-explorer/gcc-snapshot/lib/gcc/x86_64-linux-gnu/13.0.1/../../../../include/c++/13.0.1/bits/unique_ptr.h:1071:30
#2 0x55677ed6df05 in struct_compound_expr() /app/example.cpp:16:9
#3 0x55677ed6e858 in main /app/example.cpp:21:18
#4 0x7f999389e082 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24082) (BuildId: 1878e6b475720c7c51969e69ab2d276fae6d1dee)
SUMMARY: AddressSanitizer: 4 byte(s) leaked in 1 allocation(s).
```
Testcase reduced/modified from <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98401#c7>. The issue reproduces with both array list-initialization (as above) and aggregate-initialization of a struct.
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