https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86490
--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Alexander Monakov from comment #6) > (In reply to H.J. Lu from comment #5) > > When ld sees a common symbol, it will use a non-common definiton > > in a library, .a or .so, to override it. > > This is surprising, is it documented somewhere? I don't think the ELF spec > suggests something like that needs to happen. It is to be consistent for common symbol linked against .a or .so.