https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103340
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:e2e98f524fdb80c16e3395f20fee930fbcad5562 commit r12-5754-ge2e98f524fdb80c16e3395f20fee930fbcad5562 Author: Jonathan Wakely <jwak...@redhat.com> Date: Wed Dec 1 16:30:30 2021 +0000 libstdc++: Remove broken std::allocator base classes [PR103340] The bitmap_allocator, __mt_alloc and __pool_alloc extensions are no longer suitable for use as the base class of std::allocator, because they have not been updated to meet the C++20 requirements. There is a patch attached to PR 103340 which addresses that, but more work would be needed to solve the linking errors that occur when the library is configured to use them. Using --enable-libstdcxx-allocator=bitmap wouldn't even bootstrap for the past few years, and I can't find any gcc-testresults reports using any of these allocators. This patch removes the configure option to use these as the std::allocator base class. The allocators are still in the tree and can be used directly, you just can't configure the library to use one of them as the base class of std::allocator. libstdc++-v3/ChangeLog: PR libstdc++/103340 PR libstdc++/103400 PR libstdc++/103381 * acinclude.m4 (GLIBCXX_ENABLE_ALLOCATOR): Remove mt, bitmap and pool options. * configure: Regenerate. * config/allocator/bitmap_allocator_base.h: Removed. * config/allocator/mt_allocator_base.h: Removed. * config/allocator/pool_allocator_base.h: Removed. * doc/xml/manual/allocator.xml: Update. * doc/xml/manual/configure.xml: Update. * doc/xml/manual/evolution.xml: Document removal. * doc/xml/manual/mt_allocator.xml: Editorial tweaks. * doc/html/manual/*: Regenerate.
