https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121128
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Tomasz Kaminski <tkami...@gcc.gnu.org>: https://gcc.gnu.org/g:d49d359b0c5266b314bcf31405746909d99927a1 commit r16-2746-gd49d359b0c5266b314bcf31405746909d99927a1 Author: Tomasz KamiÅski <tkami...@redhat.com> Date: Fri Aug 1 09:21:27 2025 +0200 libstdc++: Fix dereferencing of std::indirect xvalues [PR121128] Forr rvalues the _Self parameter deduces a non-reference type. Consequently, ((_Self)__self) moved the object to a temporary, which then destroyed on function exit. This patch fixes this by using a C-style cast __self to (const indirect&). This not only resolves the above issue but also correctly handles types that are derived (publicly and privately) from indirect. Allocator requirements in [allocator.requirements.general] p22 guarantee that dereferencing const _M_objp works with equivalent semantics to dereferencing _M_objp. PR libstdc++/121128 libstdc++-v3/ChangeLog: * include/bits/indirect.h (indirect::operator*): Cast __self to approparietly qualified indirect. * testsuite/std/memory/indirect/access.cc: New test. * testsuite/std/memory/polymorphic/access.cc: New test. Reviewed-by: Jonathan Wakely <jwak...@redhat.com> Signed-off-by: Tomasz KamiÅski <tkami...@redhat.com>
