[Bug c/79459] Please add enable_if and diagnose_if attributes (from clang)

[corentinjabot at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79459

corentinjabot at gmail dot com changed:

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

--- Comment #2 from corentinjabot at gmail dot com ---
This could be used to implement SFINAE friendly, warning free <compare>
operators
See https://github.com/llvm/llvm-project/pull/79465
https://godbolt.org/z/1xr9Wx38T