From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <sourceware-bugzilla@sourceware.org>
Received: by sourceware.org (Postfix, from userid 48)
 id 4EE62385782F; Tue, 22 Sep 2020 06:18:31 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4EE62385782F
From: "sourav0311 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/25969] Ignoring .debug_aranges with clang .debug_names
Date: Tue, 22 Sep 2020 06:18:31 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gdb
X-Bugzilla-Component: symtab
X-Bugzilla-Version: HEAD
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: sourav0311 at gmail dot com
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: cc
Message-ID: <bug-25969-4717-WPcp21xnnb@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-25969-4717@http.sourceware.org/bugzilla/>
References: <bug-25969-4717@http.sourceware.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: gdb-prs@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gdb-prs mailing list <gdb-prs.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/gdb-prs>,
 <mailto:gdb-prs-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/gdb-prs/>
List-Help: <mailto:gdb-prs-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/gdb-prs>,
 <mailto:gdb-prs-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Tue, 22 Sep 2020 06:18:31 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D25969

Sourabh Singh Tomar <sourav0311 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sourav0311 at gmail dot com

--- Comment #2 from Sourabh Singh Tomar <sourav0311 at gmail dot com> ---
GDB when trying to parse `debug_names` also parses `debug_aranges`
section, however `debug_aranges` section is not generated/present
in `clang-trunk` generated executables. This warning is the result
of GDB not checking whether the section is even present/empty.

clang version 12.0.0

$clang -gdwarf-5 -gpubnames test.c
$readelf -S a.out | awk /debug/
  [24] .debug_abbrev     PROGBITS         0000000000000000  000009a4
  [25] .debug_info       PROGBITS         0000000000000000  000009ed
  [26] .debug_str_offset PROGBITS         0000000000000000  00000a46
  [27] .debug_str        PROGBITS         0000000000000000  00000a6e
  [28] .debug_addr       PROGBITS         0000000000000000  00000af5
  [29] .debug_names      PROGBITS         0000000000000000  00000b08
  [30] .debug_line       PROGBITS         0000000000000000  00000b78
  [31] .debug_line_str   PROGBITS         0000000000000000  00000be1


A quick fix could be:
```
static void
create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile,
                             struct dwarf2_section_info *section)
{
  /*If section is empty(or not present) bail out early.*/
  if (section->empty ())
    return;
```

Because anyway we are bailing out after emitting the warning:
```
if (!insertpair.second)
        {
          warning (_("Section .debug_aranges in %s has duplicate "
                     "debug_info_offset %s, ignoring .debug_aranges."),
                   objfile_name (objfile), sect_offset_str (per_cu->sect_of=
f));
          return;
        }
```

--=20
You are receiving this mail because:
You are on the CC list for the bug.=