[Bug c++/124347] __builtin_object_size/__builtin_dynamic_object_size doesn't work in constexpr contexts

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124347

--- Comment #6 from Tomasz Kamiński <tkaminsk at gcc dot gnu.org> ---
> Note, clang++ doesn't support it though.
Ups, I was sure they did, must have misremembered. Will need to still use
workaround for time being. Sorry for that.