From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <elfutils-devel-return-6138-listarch-elfutils-devel=sourceware.org@sourceware.org>
Received: (qmail 28961 invoked by alias); 5 May 2017 13:16:02 -0000
Mailing-List: contact elfutils-devel-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <elfutils-devel.sourceware.org>
List-Post: <mailto:elfutils-devel@sourceware.org>
List-Help: <mailto:elfutils-devel-help@sourceware.org>
List-Subscribe: <mailto:elfutils-devel-subscribe@sourceware.org>
Sender: elfutils-devel-owner@sourceware.org
Received: (qmail 24597 invoked by uid 48); 5 May 2017 13:15:56 -0000
From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug tools/21247] addr2line doesn't properly resolve filename/lineno
Date: Fri, 05 May 2017 16:47:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: elfutils
X-Bugzilla-Component: tools
X-Bugzilla-Version: unspecified
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: mark at klomp dot org
X-Bugzilla-Status: UNCONFIRMED
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:
Message-ID: <bug-21247-10460-EpCuvIx3VV@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-21247-10460@http.sourceware.org/bugzilla/>
References: <bug-21247-10460@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-SW-Source: 2017-q2/txt/msg00194.txt.bz2

https://sourceware.org/bugzilla/show_bug.cgi?id=3D21247

--- Comment #4 from Mark Wielaard <mark at klomp dot org> ---
Looking at the debug_info we do have:

 [39ca09]    subprogram
             low_pc               (addr) +0x00000000002c08b0
<_Z20PlatformCrashHandleriP9siginfo_tPv>
             high_pc              (addr) +0x00000000002c0a05
             lo_user+0x1fe7       (flag) Yes
             frame_base           (block1)=20
              [   0] reg7
             MIPS_linkage_name    (strp)
"_Z20PlatformCrashHandleriP9siginfo_tPv"
             name                 (strp) "PlatformCrashHandler"
             decl_file            (data1) 107
             decl_line            (data2) 580
             external             (flag) Yes
             lo_user+0x1fe1       (flag) Yes

Which is inside a compile_unit generated by clang:

 [29d634]  compile_unit
           producer             (strp) "clang version 3.7.1
(tags/RELEASE_371/fi
nal)"
           language             (data2) C_plus_plus (4)
           name                 (strp) "-"
           stmt_list            (data4) 581678
           comp_dir             (strp)
"/home/marat/production/ue4/Engine/Source
"
           lo_user+0x1fe1       (flag) Yes
           low_pc               (addr) +000000000000000000
           ranges               (data4) range list [ c92e0]

Note that the low_pc seems bogus (zero). And the range list seems bogus too=
 (it
consists of 800+ entries some of which look bogus too
(+0x0000000000000001..+0x0000000000000001) and none seem to actually cover =
that
function addresses.

See also this discussion on the mailinglist:
https://sourceware.org/ml/elfutils-devel/2017-q2/msg00190.html

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