[Bug c++/125821] Implement C++29 language features

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125821
Bug 125821 depends on bug 125822, which changed state.

Bug 125822 Summary: [C++29] P3822R2, Conditional noexcept specifiers in 
compound requirements
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125822

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED