[Bug c++/97165] [9/10/11 Regression] Infinite error stream on invalid code

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97165

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Similar case:

template<class T>
class p<p<p<p<p<p<p<