Is was in a DWARFv3 draft but was removed from the final version: it
was removed from libdw which breaks compilation.
case DW_TAG_restrict_type:
case DW_TAG_interface_type:
case DW_TAG_unspecified_type:
- case DW_TAG_mutable_type:
case DW_TAG_shared_type:
return mc_tag_type;
case 0x3b: return "DW_TAG_unspecified_type";
case 0x3c: return "DW_TAG_partial_unit";
case 0x3d: return "DW_TAG_imported_unit";
-case 0x3e: return "DW_TAG_mutable_type";
case 0x3f: return "DW_TAG_condition";
case 0x40: return "DW_TAG_shared_type";
case 0x41: return "DW_TAG_type_unit";