Bug#1024549: espeakup: crashes during speech synthesis installation, snd_pcm_area_copy assertion failed

[Samuel Thibault]

Hello,

Arnaud Rebillout, le lun. 21 nov. 2022 15:52:47 +0700, a ecrit:
>   espeakup: pcm.c:3237: snd_pcm_area_copy: Assertion `dst < src || dst >= src + bytes' failed.
>   Aborted

Ouch!

> It's fairly easy to reproduce, for me it crashes every time, although it
> doesn't always crash at the same moment of the installation. The exact
> moment when it crashes seems quite unpredictable.
> 
> Note that I'm running the iso in a QEMU VM on an up-to-date Debian Sid,
> so that's qemu-system-x86 7.1+dfsg-2+b2 and linux-image-amd64 6.0.8-1,
> in case it matters.

Every detail can matter. Since it's in a vm, normally one should be able
to reproduce it, but it seems I can't. So please provide all details:

- how exactly you start the VM, notably which audio device do you use
- during installation, which choices do you make that depart from the
  default value (language, tasks, etc.)

> I'l try to debug further, but I'm not familiar with these low-level
> bits. The assertion error happens in the alsa-lib source package (binary
> package libasound2 is my guess), as you might have noticed.

Yes, I really doubt the bug is in espeakup (or pcaudiolib) itself since
these functions are really deep inside alsa, but we have to investigate
to be sure about it.

Samuel