https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107450
Bug ID: 107450
Summary: GCC accepts invalid program involving multiple
template parameter packs
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jlame646 at gmail dot com
Target Milestone: ---
The following invalid program is accepted by gcc and clang but rejected by
msvc:
Demo: https://godbolt.org/z/Esbq4qK94
```
template<typename... T1, typename... T2, typename... T3>
void foo(T1&&...args1, T2&&... args2, T3&&... args3) {
std::cout << "args1:\n", ((std::cout << args1 << " "), ...);
std::cout << "args2:\n", ((std::cout << args2 << " "), ...);
std::cout << "args3:\n", ((std::cout << args3 << " "), ...);
}
int main(int argc, char** argv)
{
foo(1,2,3,4,5,6); //gcc and clang compiles this while msvc correctly
rejects this
}
```
