https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121842
Bug ID: 121842
Summary: ICE: in coerce_template_parms, at cp/pt.cc:9283
Product: gcc
Version: 16.0
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 invalid program reports an internal compiler error: in
coerce_template_parms, at cp/pt.cc:9283
To quickly reproduce: https://gcc.godbolt.org/z/cdKf4G9qb
```
#include <concepts>
template<typename... Ts, typename... Ts>
concept HasString = true;
template<typename... Ts>
concept NotHasString = HasString<Ts...>;
int main() {
return 0;
}
```
Note that if we do not have the same name (i.e., `template<typename... Ts,
typename... Ts>` to `template<typename... Ts, typename... T>`) the program
compiles correctly.
