https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92927
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> --- Author: redi Date: Fri Dec 20 17:10:18 2019 New Revision: 279656 URL: https://gcc.gnu.org/viewcvs?rev=279656&root=gcc&view=rev Log: libstdc++: Add inline to maybe-constexpr functions (PR 92927) Originally these functions were always inline. I changed them in r277342 to be always constexpr, then in r277588 changed them to be constexpr for C++14, but I didn't restore the 'inline' for C++11. That leads to linker errors when libstdc++.so is built unoptimized, because those functions don't get instantiated in src/c++11/string-inst.o PR libstdc++/92927 * include/bits/alloc_traits.h (__alloc_on_copy, __alloc_on_move) (__alloc_on_swap): Add inline specifier. Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/alloc_traits.h
