http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46911
--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-02-23 13:34:25 UTC --- There are several issues. First as Jakub noted we have a NULL DECL_INITAL for the inlined __MAIN. If we fix that during LTO streaming (avoiding direct input/output of DECL_INITIAL of all FUNCTION_DECLs) we run into the issue that cgraph sets DECL_INITIAL of __MAIN to error_mark_node after inlining it (assuming that debug_hooks->outlining_inline_function did everything that was necessary already). We can try to avoid this by setting abstract_and_needed in the cgraph node. Together this solves this ICE. It doesn't solve PR47799 though. This is because how we split trees between the global and the function-local sections during streaming. We end up with multiple copies of the abstract BLOCK tree as well as bogus cross-function references for all abstract origins (apart from that to the function-decl itself).
