[Bug c++/124198] nested template-for generating warnings for unused-but-set-variable

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124198

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 63978
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63978&action=edit
gcc16-pr124198.patch

Untested fix.