https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90276
--- Comment #15 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:39d37ffbf890334b16ffb56da9fe00f0daa87f16 commit r12-10145-g39d37ffbf890334b16ffb56da9fe00f0daa87f16 Author: Jonathan Wakely <jwak...@redhat.com> Date: Wed Jan 31 10:41:49 2024 +0000 libstdc++: Avoid reusing moved-from iterators in PSTL tests [PR90276] The reverse_invoker utility for PSTL tests uses forwarding references for all parameters, but some of those parameters get forwarded to move constructors which then leave the objects in a moved-from state. When the parameters are forwarded a second time that results in making new copies of moved-from iterators. For libstdc++ debug mode iterators, the moved-from state is singular, which means copying them will abort at runtime. The fix is to make copies of iterator arguments instead of forwarding them. The callers of reverse_invoker::operator() also forward the iterators multiple times, but that's OK because reverse_invoker accepts them by forwarding reference but then breaks the chain of forwarding and copies them as lvalues. libstdc++-v3/ChangeLog: PR libstdc++/90276 * testsuite/util/pstl/test_utils.h (reverse_invoker): Do not use perfect forwarding for iterator arguments. (cherry picked from commit 723a7c1ad29523b9ddff53c7b147bffea56fbb63)
