http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48333
--- Comment #3 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2011-03-31 06:12:22 UTC --- Created attachment 23832 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23832 Patch that fixes the bug It's a garbage collection issue: we're supposed to share mem_attrs involving __builtin and non-__builtin functions, and we do, unless GC manages to discard mem_attrs at precisely the worst possible moment, and does so at only one of the compilations, and we're unlucky to end up inserting a different one next time it is required. A more general solution would amount to checking for builtins at dump time, and discarding the __builtin prefix or noting it as optional or somesuch, but I'm testing this simpler and hopefully effective solution instead.
