https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100486
--- Comment #41 from Óscar Fuentes <gcc_bugzilla at axeitado dot com> --- (In reply to Eric Botcazou from comment #40) > > Do you want a full rebuild of gcc? > > At least a full rebuild of libstdc++-v3: > rm -rf i686-w64-mingw32/libstdc++-v3 > make all-target-libstdc++-v3 -jN After removing the spurious crtend.o and rebuilding libstdc++ following those instructions, the new libstdc++-6.dll still crashes the same way.