[Bug c++/103769] [11/12 Regression] checking ICE in hashtab_chk_error with alias template and pack expansion after r11-7931

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103769

--- Comment #8 from Sergei Trofimovich <slyfox at gcc dot gnu.org> ---
Slightly simpler executable example without recursion:

template <typename T> using t = T;
template <typename...> struct s {};
template <typename...Args> s<t<Args>...> f() { return {};}

int main() { f<void>(); }