[Bug c++/110367] [C++26] Add new built-in for std::is_within_lifetime

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110367

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This should be now done in r17-3846 with r17-4132 follow-up.  P3450R1
implementation posted in
https://gcc.gnu.org/pipermail/gcc-patches/2026-September/730990.html