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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/30838] New: [gdb/symtab] Support .debug_types section in
 .gnu_debugaltlink file
Date: Mon, 11 Sep 2023 15:04:46 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gdb
X-Bugzilla-Component: symtab
X-Bugzilla-Version: HEAD
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X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: vries at gcc dot gnu.org
X-Bugzilla-Status: NEW
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X-Bugzilla-Priority: P2
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D30838

            Bug ID: 30838
           Summary: [gdb/symtab] Support .debug_types section in
                    .gnu_debugaltlink file
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: symtab
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

There are two methods to factor out type information in a dwarf4 executable:
- use -fdebug-info-types to generate type units in a .debug_types section, =
and
- use dwz to create partial units.

The dwz method has an extra benefit: it also allows to factor out informati=
on
between executables into a newly created .dwz file, pointed to by a
.gnu_debugaltlink section.

There is nothing prohibiting a .gnu_debugaltlink file to contain a
.debug_types section.

It's just not generated by dwz atm, and consequently gdb has no support for=
 it.

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