* dwarf.h (FMT_CODE): Adjust argument order; fix mapping to
        dwarf_subscr_data_formats bits.
        * dwarfout.c (simple_type_size_in_bits): Handle a type with
        no computed size as size zero.
        (field_byte_offset): Likewise.
        (subscript_data_attribute): Handle a range with no upper bound.

From-SVN: r37592