Bug#1128079: Bug#1128001: libgdk-pixbuf-2.0-0: version 2.44.5+dfsg-3 makes volumeicon-alsa fail to work

[Simon McVittie]

On Sat, 21 Mar 2026 at 22:34:38 +0100, Johannes Stezenbach wrote:
>> I couldn't find evidence of volumeicon ignoring this signal in codesearch,
>> but perhaps some library that it uses that ignores this signal, rather than
>> volumeicon itself?
>
>volumeicon itself does it:
>https://github.com/mati75/volumeicon-debian/blob/master/src/volumeicon.c#L1330

Huh, I wonder why codesearch didn't find that? Perhaps it was removed 
from codesearch's index immediately when it was removed from unstable 
(I'd assumed it would still be there for a while, since it's still on 
sources.debian.org).

>Presumably because it can spawn an external mixer,
>the default is "xterm -e 'alsamixer'".

It would be better if it did this with an interface that reaps the 
process without needing to ignore SIGCHLD, like g_spawn_async() without 
G_SPAWN_DO_NOT_REAP_CHILD, or double-forking (forking in the child_setup 
function, in GLib's APIs) to get the process re-parented to something 
that will reap it. GLib's API documentation for 
g_child_watch_source_new() has a long list of ways that waiting for a 
process can fail, unless all the libraries that share a process space 
are cooperating with each other.

     smcv