[Bug libstdc++/122300] [16 regression] libstdc++ build was broken for pru-unknown-elf with r16-4422-g1b18a9e53960f3

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122300

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Patch posted: https://gcc.gnu.org/pipermail/gcc-patches/2026-March/709816.html