http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60612
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> --- *Sigh* -- ignore that. After line 223 it jumps back to 216 then continues back to 223 again with the right values in *dep. I thought I was debugging an unoptimised libstdc++.so but apparently not.