https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80658
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #6) > Using the default configuration GLIBCPP_FORCE_NEW has not made any > difference to std::allocator since 2005 when r106665 was committed, changing > the default back to the allocator based on new/delete. In fact that's when the default allocator was switched to new_allocator, but that used GLIBCXX_FORCE_NEW. The older GLIBCPP_FORCE_NEW env var hasn't made a difference since r68958 in 2003.