[Bug debug/71669] New: DW_AT_data_bit_offset is not emitted for dwarf4 and above

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71669

            Bug ID: 71669
           Summary: DW_AT_data_bit_offset is not emitted for dwarf4 and
                    above
           Product: gcc
           Version: 6.1.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: debug
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

http://www.dwarfstd.org/ShowIssue.php?issue=081130.1

Due to the no so nice parts of DW_AT_bit_offset for little-endian, the dwarf
standard come up with DW_AT_data_bit_offset  to fix that.

DW_AT_bit_offset has been deprecated for dwarf4.