https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69191
--- Comment #9 from eyenseo at gmail dot com --- (In reply to Jonathan Wakely from comment #8) > That only shows how your gcc compiler was built. If I understand correctly > the Ubuntu packages that provide libstdc++.so.6 come from a different build > (of a different version) from the gcc compiler executables. Well that sucks ... and now what? Close this bug and report one to ubuntu? Is there a way I can check at runtime which library I'm using?