http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45815
--- Comment #5 from Ian Lance Taylor <ian at airs dot com> 2010-09-28 16:32:16 UTC --- Dominique: yes, but flag_split_stack should be -1 going into that code, so the effect of that should be to set flag_split_stack to 0. Can you confirm that the generated file options.h was correctly regenerated in your build? It should contain the lines /* Set by -fsplit-stack. Generate discontiguous stack frames */ int flag_split_stack = -1;