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 CB9AD3858406; Tue, 26 Apr 2022 14:59:19 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CB9AD3858406
From: "aburgess at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/18772] gdb does not respond to CTRL-C
Date: Tue, 26 Apr 2022 14:59:19 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gdb
X-Bugzilla-Component: remote
X-Bugzilla-Version: 7.9
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: critical
X-Bugzilla-Who: aburgess at redhat dot com
X-Bugzilla-Status: REOPENED
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: attachments.created
Message-ID: <bug-18772-4717-Ae0x2MbKMc@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-18772-4717@http.sourceware.org/bugzilla/>
References: <bug-18772-4717@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, 26 Apr 2022 14:59:19 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D18772

--- Comment #12 from Andrew Burgess <aburgess at redhat dot com> ---
Created attachment 14082
  --> https://sourceware.org/bugzilla/attachment.cgi?id=3D14082&action=3Ded=
it
A reproducer for this issue

The attached file sig-c-bug.c is a reproducer for this issue.  The bug impa=
cts
not just remote targets, but also native Linux targets too as of commit
2b718529b99.

Compile up the attached file as:

  gcc -g3 -O0 -Wall -Wextra -Werror  -o sig-c-bug.x sig-c-bug.c

Then run the test as:

  ./gdb/gdb --data-directory ./gdb/data-directory/ \
     ~/tmp/sig-c-bug.x \
     -q \
     -ex 'set detach-on-fork off' \
     -ex 'set follow-fork-mode parent' \
     -ex 'run' \
     -ex 'info inferiors' \
     -ex 'inferior 2' \
     -ex 'continue'

You should end up with inferior 2 running, every second you'll see a new li=
ne
of this output:

  Tick: 0
  Tick: 1
  Tick: 2
  Tick: 3
  Tick: 4
  ... and so on ...

try to interrupt gdb using ctrl-c ... it doesn't work for me.

Inferior 2 will automatically exit after 'Tick: 9', at which point you need=
 to
restart the test.

The same behaviour can be seen when using a remote target, just start gdbse=
rver
something like:

  gdbserver --multi :54321 sig-c-bug.x

and then:

  ./gdb/gdb --data-directory ./gdb/data-directory/ \
     ~/tmp/sig-c-bug.x \
     -q \
     -ex 'set sysroot /' \
     -ex 'set detach-on-fork off' \
     -ex 'set follow-fork-mode parent' \
     -ex 'target extended-remote :54321' \
     -ex 'continue' \
     -ex 'info inferiors' \
     -ex 'inferior 2' \
     -ex 'continue'

and the remote target will be ticking in inferior 2, and can't be interrupt=
ed.

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