[Bug libstdc++/29286] [4.0/4.1/4.2/4.3 Regression] placement new does not change the dynamic type as it should

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29286

--- Comment #180 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sam James <sja...@gcc.gnu.org>:

https://gcc.gnu.org/g:612194c064c2ca279191712bcc01f8fcef65ade9

commit r16-3050-g612194c064c2ca279191712bcc01f8fcef65ade9
Author: Sam James <s...@gentoo.org>
Date:   Sat Aug 2 13:57:03 2025 +0100

    gcc: drop placement new workaround for old bootstrap compilers

    Since r15-4719-ga9ec1bc06bd3cc, we require GCC 5.4, so a workaround for
    < GCC 4.3 is long-obsolete. Before that, we required GCC 4.8.3 too.

    i.e. it shouldn't be possible to build GCC with such a compiler for
    quite some time.

    gcc/ChangeLog:
            PR libstdc++/29286
            * Makefile.in (ALIASING_FLAGS): Drop.
            * configure: Regenerate.
            * configure.ac: Drop -fno-strict-aliasing workaround for < GCC 4.3.

    gcc/d/ChangeLog:

            * Make-lang.in (ALL_DFLAGS): Don't use ALIASING_FLAGS.