Re: [PATCH v1] libstdc++: separate std::ranges::subrange declarations from ranges_util.h

[yuao via Sourceware Forge]

This PR will resolve the include cycle mentioned in 
https://gcc.gnu.org/pipermail/libstdc++/2026-September/067805.html.

--
https://forge.sourceware.org/gcc/gcc/pulls/235#issuecomment-7602