https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128173
--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> --- OK, this might be just unimplemented - and possibly is fixed by the following patch (untested, needs to be confirmed): [PATCH v7 08/10] openmp: Add support for using custom mappers with iterators (C, C++), https://gcc.gnu.org/pipermail/gcc-patches/2026-October/735646.html
