http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50338
--- Comment #4 from Jan Hubicka <hubicka at ucw dot cz> 2011-09-11 09:36:55 UTC --- > All the source in my project's library is built with -flto. > > This same basic code worked with LTO before, shortly after LTO > first came out. This is the first time I've tried it on a 64-bit OS. as a workaround, you could probably use -flto-partition=none. If whole project is build with LTO, you need to figure out what files are needed to reproduce the problem. Or if it is easy for you to build patched GCC, I can provide you patch with some extra sanity checks, so we can work out what happens.