* dwarf2out.c (output_call_frame_info): Don't emit a CIE with no FDEs.

        * dwarf2out.c (gen_type_die): Abort on broken recursion.

        PR c++/6381
        * dwarf2out.c (rtl_for_decl_location): Only expand INTEGER_CST and
        REAL_CST.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@53295 138bc75d-0d04-0410-961f-82ee72b054a4