https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110106
Bug ID: 110106
Summary: ICE on noexcept(noexcept(...)) with optional
Product: gcc
Version: 12.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: stevenxia990430 at gmail dot com
Target Milestone: ---
The following program produces internal compiler error: Segmentation fault.
Tested on GCC-trunk. Note replacing the std::optional<int>{z} inside the
noexcept with just {z} compiles with failure.
To quickly reproduce: https://gcc.godbolt.org/z/dhjETE7K3
```
#include <optional>
namespace x {
void y(std::optional<int> z) noexcept(noexcept(std::optional<int>{z})) {}
}
int main() {
}
```
tested this on clang-trunk and it successfully compiles.
