http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50588 --- Comment #6 from Mikael Pettersson <mikpe at it dot uu.se> 2011-10-02 20:45:07 UTC --- So which libc was this originally compiled against? Some things in traceroute.i make me think it's glibc, but I don't see any indication of which version it was.