https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85678
David Brown <david at westcontrol dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|NEW |RESOLVED --- Comment #15 from David Brown <david at westcontrol dot com> --- This has been implemented in gcc 10, and -fno-common is now the default. This "bug" can presumably now be closed. Many thanks to the gcc developers here.