[Bug c++/96464] GCC accepts 'auto' in template argument

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96464

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
A simpler example:

template <typename T> struct S;
void foo(S<auto>);