[Bug c++/124561] ICE in tsubst on invalid out-of-class definition of member class template

[attackerj1113 at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124561

--- Comment #1 from Jian Ma <attackerj1113 at gmail dot com> ---
another code:
https://godbolt.org/z/cYYh8oP6P