https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115851
Bug ID: 115851
Summary: ICE in gimplify_var_or_parm_decl with coroutine
suspension point inside statement expression
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: daklishch at gmail dot com
Target Milestone: ---
The following snippet ICEs GCC if the later is invoked with -std=c++20
-fno-exceptions
```
namespace std {
template <typename _Result>
struct coroutine_traits : _Result {};
template <typename = void>
struct coroutine_handle {
operator coroutine_handle<>();
};
} // namespace std
struct SuspendNever {
bool await_ready();
void await_suspend(std::coroutine_handle<>);
void await_resume();
};
struct PromiseType {
void get_return_object();
SuspendNever initial_suspend();
SuspendNever final_suspend();
};
struct Coroutine {
using promise_type = PromiseType;
};
struct ErrorOr {
int release_error();
};
void warnln(int const&);
Coroutine __async_test_input_basic() {
({
co_await SuspendNever{};
ErrorOr _temporary_result2;
warnln(_temporary_result2.release_error());
});
}
```
(if you prefer standard-complying code, replace std namespace with #include
<coroutine>)
CE link: https://godbolt.org/z/ePrP7rh73
