http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46512
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2010-11-17 01:25:27 UTC --- ix86_function_arg_boundary has static unsigned int ix86_function_arg_boundary (enum machine_mode mode, const_tree type) { unsigned int align; if (type) { /* Since the main variant type is used for call, we convert it to the main variant type. */ type = TYPE_MAIN_VARIANT (type); align = TYPE_ALIGN (type); } else align = GET_MODE_ALIGNMENT (mode);