https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106766
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:718a6d475b3d17759618c68331c85f55c58ec9a3 commit r13-2567-g718a6d475b3d17759618c68331c85f55c58ec9a3 Author: Patrick Palka <ppa...@redhat.com> Date: Fri Sep 9 14:56:32 2022 -0400 libstdc++: Fix zip_view's operator- for integer-class difference type [PR106766] The difference type of an underlying iterator could be an integer-class type, which make_unsigned_t doesn't handle, so we need to use the more general __make_unsigned_like_t / __to_unsigned_like here instead. PR libstdc++/106766 libstdc++-v3/ChangeLog: * include/std/ranges (zip_view::_Iterator::operator-): Use __to_unsigned_like instead of make_unsigned_t. (zip_view::_Sentinel::operator-): Likewise. * testsuite/std/ranges/zip/1.cc (test04): New test.
