PR c++/19044

	* c-common.c (set_builtin_user_assembler_name): New.
	* c-common.h (set_builtin_user_assembler_name): Declare.
	* c-decl.c (finish_decl): Use set_builtin_user_assembler_name

	* decl.c (make_rtl_for_nonlocal_decl): Use set_builtin_user_assembler_name

	* g++.dg/ext/builtin6.C: New

From-SVN: r92428