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From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
To: dwz@sourceware.org
Subject: [Bug default/27440] New: [dwz, dwarf5] Add --dwarf-5 flag to
 generate .debug_sup, ref_sup and strp_sup
Date: Fri, 19 Feb 2021 11:43:28 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27440

            Bug ID: 27440
           Summary: [dwz, dwarf5] Add --dwarf-5 flag to generate
                    .debug_sup, ref_sup and strp_sup
           Product: dwz
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: default
          Assignee: nobody at sourceware dot org
          Reporter: mark at klomp dot org
                CC: dwz at sourceware dot org
            Blocks: 24726
  Target Milestone: ---

Currently the dwz multi-files are really DWARF4 + GNU extensions. Since the
format and references were formalized in the DWARF5 spec as DWARF Supplemen=
tary
Object Files (DWARF5 section 7.3.6) it would be nice to have a way to gener=
ate
this format with a --dwarf-5 flag:

- Use DW_FORM_ref_sup[48] and DW_FORM_strp_sup instead of
  DW_FORM_GNU_ref_alt and DW_FORM_GNU_strp_alt

- Generate .debug_sup section (standardized variant of .gnu_debugaltlink)


Referenced Bugs:

https://sourceware.org/bugzilla/show_bug.cgi?id=3D24726
[Bug 24726] [dwz] Support DWARF5
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