http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60084
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> --- I get the following warning: ./startup/ROMCopy.c:15:9: warning: array ‘__S_romp’ assumed to have one element [enabled by default] So the code is invalid and undefined. Writing past the bounds of an array is undefined. If I add extern to the definition of RomInfo, I get the correct behavior.