Hi!

> From: Haitao Shan <hshan@google.com>
> 
> This is a workaround which fixes triple fault
> in __restore_processor_state on clang when
> built with LTO.
> 
> When load_TR_desc and load_mm_ldt are inlined into
> fix_processor_context due to LTO, they cause
> fix_processor_context (or in this case __restore_processor_state,
> as fix_processor_context was inlined into __restore_processor_state)
> to access the stack canary through %gs, but before
> __restore_processor_state has restored the previous value
> of %gs properly. LLVM appears to be inlining functions with stack
> protectors into functions compiled with -fno-stack-protector,
> which is likely a bug in LLVM's inliner that needs to be fixed.

That's rather ugly.

Would it be easier to simply mark those functions as noinline or
something like that?

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html