[Bug c++/121292] GCC accepts recursive lambda without error when template function is not instantiated

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121292

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Better testcase:
```
template <class T>
void foo() {
  auto f = [&] { f(); };
  f();
}

int main() {
    //foo<int>();
}
```