2010-09-24  Richard Guenther  <rguenther@suse.de>

	* c-decl.c (pop_scope): Always set file-scope DECL_CONTEXT.
	Make sure to not call set_type_context with error_mark_node.
	* langhooks.c (lhd_set_decl_assembler_name): Use DECL_FILE_SCOPE_P.

	* gcc.dg/lto/20091006-2_0.c: Prune warnings.

From-SVN: r164591