https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110065
Bug ID: 110065
Summary: auto in template argument causes ICE, also
accepts-invalid
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
To quickly reproduce: https://gcc.godbolt.org/z/noY1qxK91
```
#include <type_traits>
#include <iostream>
auto main() -> int
{
std::cout << std::is_scoped_enum_v<auto(&)(const int*) -> auto&>;
return EXIT_SUCCESS;
}
```
Note, if we remove the std::cout and produce the following code:
```
#include <type_traits>
#include <iostream>
auto main() -> int
{
std::is_scoped_enum_v<auto(&)(const int*) -> auto&>;
return EXIT_SUCCESS;
}
```
gcc compiles without any error, however this code is rejected by Clang (tested
on Clang-trunk)
