https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115939
--- Comment #10 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-14 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:b5d04ffcdf30076bf80aa48f7a67404c20597141 commit r14-11450-gb5d04ffcdf30076bf80aa48f7a67404c20597141 Author: Jonathan Wakely <jwak...@redhat.com> Date: Tue Jul 16 09:43:06 2024 +0100 libstdc++: Define operator== for hash table iterators [PR115939] Currently iterators for unordered containers do not directly define operator== and operator!= overloads. Instead they rely on the base class defining them, which is done so that iterator and const_iterator comparisons work using the same overloads. However this means a derived-to-base conversion is needed to call those operators, and PR libstdc++/115939 shows that this can be ambiguous (for -pedantic) when another overloaded operator could be used after an implicit conversion. This change defines operator== and operator!= directly for _Node_iterator and _Node_const_iterator so that no derived-to-base conversions are needed. The new overloads just forward to the base class ones, so the implementation is still shared and doesn't need to be duplicated. libstdc++-v3/ChangeLog: PR libstdc++/115939 * include/bits/hashtable_policy.h (_Node_iterator): Add operator== and operator!=. (_Node_const_iterator): Likewise. * testsuite/23_containers/unordered_map/115939.cc: New test. (cherry picked from commit 591b71993f15ed95eb38f3314f3d9ac159b9d051)
