http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51891
Dimitris Papavasiliou <dpapavas at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dpapavas at gmail dot com --- Comment #1 from Dimitris Papavasiliou <dpapavas at gmail dot com> 2012-09-16 15:21:04 UTC --- The runtime crashes at libobj.c/ivars.c line 191: count = ivar_list->ivar_count; The problem is that, when a class has no instance variables ivar_list will be NULL so this needs to be checked for.