    pub const sibling = 0x01;
    pub const location = 0x02;
    pub const name = 0x03;
    pub const ordering = 0x09;
    pub const subscr_data = 0x0a;
    pub const byte_size = 0x0b;
    pub const bit_offset = 0x0c;
    pub const bit_size = 0x0d;
    pub const element_list = 0x0f;
    pub const stmt_list = 0x10;
    pub const low_pc = 0x11;
    pub const high_pc = 0x12;
    pub const language = 0x13;
    pub const member = 0x14;
    pub const discr = 0x15;
    pub const discr_value = 0x16;
    pub const visibility = 0x17;
    pub const import = 0x18;
    pub const string_length = 0x19;
    pub const common_reference = 0x1a;
    pub const comp_dir = 0x1b;
    pub const const_value = 0x1c;
    pub const containing_type = 0x1d;
    pub const default_value = 0x1e;
    pub const @"inline" = 0x20;
    pub const is_optional = 0x21;
    pub const lower_bound = 0x22;
    pub const producer = 0x25;
    pub const prototyped = 0x27;
    pub const return_addr = 0x2a;
    pub const start_scope = 0x2c;
    pub const bit_stride = 0x2e;
    pub const upper_bound = 0x2f;
    pub const abstract_origin = 0x31;
    pub const accessibility = 0x32;
    pub const address_class = 0x33;
    pub const artificial = 0x34;
    pub const base_types = 0x35;
    pub const calling_convention = 0x36;
    pub const count = 0x37;
    pub const data_member_location = 0x38;
    pub const decl_column = 0x39;
    pub const decl_file = 0x3a;
    pub const decl_line = 0x3b;
    pub const declaration = 0x3c;
    pub const discr_list = 0x3d;
    pub const encoding = 0x3e;
    pub const external = 0x3f;
    pub const frame_base = 0x40;
    pub const friend = 0x41;
    pub const identifier_case = 0x42;
    pub const macro_info = 0x43;
    pub const namelist_items = 0x44;
    pub const priority = 0x45;
    pub const segment = 0x46;
    pub const specification = 0x47;
    pub const static_link = 0x48;
    pub const @"type" = 0x49;
    pub const use_location = 0x4a;
    pub const variable_parameter = 0x4b;
    pub const virtuality = 0x4c;
    pub const vtable_elem_location = 0x4d;

    // DWARF 3 values.

    pub const allocated = 0x4e;
    pub const associated = 0x4f;
    pub const data_location = 0x50;
    pub const byte_stride = 0x51;
    pub const entry_pc = 0x52;
    pub const use_UTF8 = 0x53;
    pub const extension = 0x54;
    pub const ranges = 0x55;
    pub const trampoline = 0x56;
    pub const call_column = 0x57;
    pub const call_file = 0x58;
    pub const call_line = 0x59;
    pub const description = 0x5a;
    pub const binary_scale = 0x5b;
    pub const decimal_scale = 0x5c;
    pub const small = 0x5d;
    pub const decimal_sign = 0x5e;
    pub const digit_count = 0x5f;
    pub const picture_string = 0x60;
    pub const mutable = 0x61;
    pub const threads_scaled = 0x62;
    pub const explicit = 0x63;
    pub const object_pointer = 0x64;
    pub const endianity = 0x65;
    pub const elemental = 0x66;
    pub const pure = 0x67;
    pub const recursive = 0x68;

    // DWARF 4.

    pub const signature = 0x69;
    pub const main_subprogram = 0x6a;
    pub const data_bit_offset = 0x6b;
    pub const const_expr = 0x6c;
    pub const enum_class = 0x6d;
    pub const linkage_name = 0x6e;

    // DWARF 5

    pub const string_length_bit_size = 0x6f;
    pub const string_length_byte_size = 0x70;
    pub const rank = 0x71;
    pub const str_offsets_base = 0x72;
    pub const addr_base = 0x73;
    pub const rnglists_base = 0x74;
    pub const dwo_name = 0x76;
    pub const reference = 0x77;
    pub const rvalue_reference = 0x78;
    pub const macros = 0x79;
    pub const call_all_calls = 0x7a;
    pub const call_all_source_calls = 0x7b;
    pub const call_all_tail_calls = 0x7c;
    pub const call_return_pc = 0x7d;
    pub const call_value = 0x7e;
    pub const call_origin = 0x7f;
    pub const call_parameter = 0x80;
    pub const call_pc = 0x81;
    pub const call_tail_call = 0x82;
    pub const call_target = 0x83;
    pub const call_target_clobbered = 0x84;
    pub const call_data_location = 0x85;
    pub const call_data_value = 0x86;
    pub const @"noreturn" = 0x87;
    pub const alignment = 0x88;
    pub const export_symbols = 0x89;
    pub const deleted = 0x8a;
    pub const defaulted = 0x8b;
    pub const loclists_base = 0x8c;

    pub const lo_user = 0x2000; // Implementation-defined range start.

    pub const hi_user = 0x3fff; // Implementation-defined range end.

    // SGI/MIPS extensions.

    pub const MIPS_fde = 0x2001;
    pub const MIPS_loop_begin = 0x2002;
    pub const MIPS_tail_loop_begin = 0x2003;
    pub const MIPS_epilog_begin = 0x2004;
    pub const MIPS_loop_unroll_factor = 0x2005;
    pub const MIPS_software_pipeline_depth = 0x2006;
    pub const MIPS_linkage_name = 0x2007;
    pub const MIPS_stride = 0x2008;
    pub const MIPS_abstract_name = 0x2009;
    pub const MIPS_clone_origin = 0x200a;
    pub const MIPS_has_inlines = 0x200b;

    // HP extensions.

    pub const HP_block_index = 0x2000;
    pub const HP_unmodifiable = 0x2001; // Same as AT.MIPS_fde.

    pub const HP_prologue = 0x2005; // Same as AT.MIPS_loop_unroll.

    pub const HP_epilogue = 0x2008; // Same as AT.MIPS_stride.

    pub const HP_actuals_stmt_list = 0x2010;
    pub const HP_proc_per_section = 0x2011;
    pub const HP_raw_data_ptr = 0x2012;
    pub const HP_pass_by_reference = 0x2013;
    pub const HP_opt_level = 0x2014;
    pub const HP_prof_version_id = 0x2015;
    pub const HP_opt_flags = 0x2016;
    pub const HP_cold_region_low_pc = 0x2017;
    pub const HP_cold_region_high_pc = 0x2018;
    pub const HP_all_variables_modifiable = 0x2019;
    pub const HP_linkage_name = 0x201a;
    pub const HP_prof_flags = 0x201b; // In comp unit of procs_info for -g.

    pub const HP_unit_name = 0x201f;
    pub const HP_unit_size = 0x2020;
    pub const HP_widened_byte_size = 0x2021;
    pub const HP_definition_points = 0x2022;
    pub const HP_default_location = 0x2023;
    pub const HP_is_result_param = 0x2029;

    // GNU extensions.

    pub const sf_names = 0x2101;
    pub const src_info = 0x2102;
    pub const mac_info = 0x2103;
    pub const src_coords = 0x2104;
    pub const body_begin = 0x2105;
    pub const body_end = 0x2106;
    pub const GNU_vector = 0x2107;
    // Thread-safety annotations.

    // See http://gcc.gnu.org/wiki/ThreadSafetyAnnotation .

    pub const GNU_guarded_by = 0x2108;
    pub const GNU_pt_guarded_by = 0x2109;
    pub const GNU_guarded = 0x210a;
    pub const GNU_pt_guarded = 0x210b;
    pub const GNU_locks_excluded = 0x210c;
    pub const GNU_exclusive_locks_required = 0x210d;
    pub const GNU_shared_locks_required = 0x210e;
    // One-definition rule violation detection.

    // See http://gcc.gnu.org/wiki/DwarfSeparateTypeInfo .

    pub const GNU_odr_signature = 0x210f;
    // Template template argument name.

    // See http://gcc.gnu.org/wiki/TemplateParmsDwarf .

    pub const GNU_template_name = 0x2110;
    // The GNU call site extension.

    // See http://www.dwarfstd.org/ShowIssue.php?issue=100909.2&type=open .

    pub const GNU_call_site_value = 0x2111;
    pub const GNU_call_site_data_value = 0x2112;
    pub const GNU_call_site_target = 0x2113;
    pub const GNU_call_site_target_clobbered = 0x2114;
    pub const GNU_tail_call = 0x2115;
    pub const GNU_all_tail_call_sites = 0x2116;
    pub const GNU_all_call_sites = 0x2117;
    pub const GNU_all_source_call_sites = 0x2118;
    // Section offset into .debug_macro section.

    pub const GNU_macros = 0x2119;
    // Extensions for Fission.  See http://gcc.gnu.org/wiki/DebugFission.

    pub const GNU_dwo_name = 0x2130;
    pub const GNU_dwo_id = 0x2131;
    pub const GNU_ranges_base = 0x2132;
    pub const GNU_addr_base = 0x2133;
    pub const GNU_pubnames = 0x2134;
    pub const GNU_pubtypes = 0x2135;
    // VMS extensions.

    pub const VMS_rtnbeg_pd_address = 0x2201;
    // GNAT extensions.

    // GNAT descriptive type.

    // See http://gcc.gnu.org/wiki/DW_AT_GNAT_descriptive_type .

    pub const use_GNAT_descriptive_type = 0x2301;
    pub const GNAT_descriptive_type = 0x2302;
    // UPC extension.

    pub const upc_threads_scaled = 0x3210;
    // PGI (STMicroelectronics) extensions.

    pub const PGI_lbase = 0x3a00;
    pub const PGI_soffset = 0x3a01;
    pub const PGI_lstride = 0x3a02;