https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122921
--- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-15 branch has been updated by Patrick Palka <[email protected]>: https://gcc.gnu.org/g:0a52c19d7307043a867606b0d9416bee540647fd commit r15-10567-g0a52c19d7307043a867606b0d9416bee540647fd Author: Patrick Palka <[email protected]> Date: Mon Dec 1 17:08:01 2025 -0500 libstdc++: Inconsistent const in flat_map's value_type [PR122921] flat_map's value_type is pair<key_type, mapped_type>, which we correctly define within the container but incorrectly within the iterator. PR libstdc++/122921 libstdc++-v3/ChangeLog: * include/std/flat_map (_Flat_map_impl::_Iterator::value_type): Remove const from key_type to make consistent with the container's value_type. * testsuite/23_containers/flat_map/1.cc (test09): New test. * testsuite/23_containers/flat_multimap/1.cc (test09): New test. Reported-by: Vincent X Reviewed-by: Jonathan Wakely <[email protected]> (cherry picked from commit 3e02f86cd13c787331281ab098901f8a67381945)
