[Bug c++/109859] ICE on concept mis-typed as template type parameter

[hewillk at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109859

康桓瑋 <hewillk at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |hewillk at gmail dot com

--- Comment #1 from 康桓瑋 <hewillk at gmail dot com> ---
Reduced:

template<class>
concept C = true;

template <class = C>
int f();

https://godbolt.org/z/59739vMbj