[Bug c++/125038] C++ concept is not checked correctly.

[max.sagebaum at scicomp dot uni-kl.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125038

--- Comment #9 from Max S. <max.sagebaum at scicomp dot uni-kl.de> ---
Ok, this is embarrassing. Thanks for looking into this and sorry for missing my
mistake. clang derailed bug finding here.

I also completely missed -fconcepts-diagnostics-depth=2. The error in the
original code are much larger and I missed it. In the small reproducer I did
not check it. Sorry for taking your time.

Nevertheless, I will submit a bug report for clang. ;)