https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128525
Bug ID: 128525
Summary: internal compiler error: in verify_stmt_tree_r, at
cp/tree.cc
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: 0599jiangyc at gmail dot com
Target Milestone: ---
The following code:
```cpp
#include <coroutine>
struct future {
~future ();
struct promise_type {
future get_return_object () { return {}; }
std::suspend_never initial_suspend () { return {}; }
std::suspend_never final_suspend () noexcept { return {}; }
void return_void () {}
void unhandled_exception () {}
};
bool await_ready () { return false; }
void await_suspend (std::coroutine_handle<>) {}
int await_resume () { return 42; }
};
future failcase () {
co_await ({ auto x = future{}; x; });
}
```
Resulted in this output:
```
<source>:19:1: internal compiler error: in verify_stmt_tree_r, at
cp/tree.cc:3117
```
Trunk reproducer (`-std=c++20`): https://godbolt.org/z/8dn44G5W5
