https://gcc.gnu.org/g:a10723efcd611977c5e4a875b9cb1de920732d42
commit r16-2089-ga10723efcd611977c5e4a875b9cb1de920732d42 Author: Tomasz KamiĆski <tkami...@redhat.com> Date: Tue Jul 8 09:30:06 2025 +0200 libstdc++: Document that LWG 3881 is resolved, by using different apporach. libstdc++-v3/ChangeLog: * include/std/queue (formatter<queue<_Tp, _Container>, _CharT>) (formatter<priority_queue<_Tp, _Container, _Compare>, _CharT>): Add _GLIBCXX_RESOLVE_LIB_DEFECTS comments. Diff: --- libstdc++-v3/include/std/queue | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/libstdc++-v3/include/std/queue b/libstdc++-v3/include/std/queue index 90525897da75..1b76088b31b3 100644 --- a/libstdc++-v3/include/std/queue +++ b/libstdc++-v3/include/std/queue @@ -105,7 +105,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { return _M_f.format(__a.c, __fc); } private: - // Standard uses formatter<ref_view<_Container>, _CharT>. + // Standard uses formatter<ref_view<_Container>, _CharT>, but range_formatter + // provides same behavior. + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 3881. Incorrect formatting of container adapters backed by std::string range_formatter<_Tp, _CharT> _M_f; }; @@ -136,7 +139,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { return _M_f.format(__a.c, __fc); } private: - // Standard uses formatter<ref_view<_Container>, _CharT>. + // Standard uses formatter<ref_view<_Container>, _CharT>, but range_formatter + // provides same behavior. + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 3881. Incorrect formatting of container adapters backed by std::string range_formatter<_Tp, _CharT> _M_f; };