http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49553
--- Comment #1 from Boris Dolgov <boris at dolgov dot name> 2011-06-27 21:40:09 UTC --- Created attachment 24610 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24610 Replace magic numbers to __WORDSIZE and __WORDSIZE-1 The attached patch solves the problem for me.