[Bug lto/48056] lto throws out needed symbols when linking QtScript

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48056

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-03-10 
10:23:21 UTC ---
I think you need to use the attribute used on cti_vm_throw when using LTO as
the symbol usage is hidden from the compiler.