amd64: sweep segfaults when changing the gain ratio in the record box

[Jonas Meurer <mejo@debian.org>]

Package: sweep
Version: 0.8.4-2
Severity: important


Hello,

recording audio with sweep works quite well, but when i try to record a
second audio stream and sample it over the first one, i need to adjust
the ratio from previous to recorded sound gain in the "record" box.
this causes a segmentation fault on my amd64 debian/unstable system.

i use a new file created at the start of sweep, and it doesn't matter
whether i save this file before adjusting the gain ratio.

the bug is obviously amd64 specific, as sweep in my i386 chroot doesn't
segfault.

...
 jonas

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.14-5-amd64
Locale: LANG=C, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)

Versions of packages sweep depends on:
ii  libc6                    2.3.5-7         GNU C Library: Shared libraries an
ii  libglib1.2               1.2.10-10       The GLib library of C routines
ii  libgtk1.2                1.2.10-18       The GIMP Toolkit set of widgets fo
ii  libmad0                  0.15.1b-2.1     MPEG audio decoder library
ii  libogg0                  1.1.2-1         Ogg Bitstream Library
ii  libsamplerate0           0.1.1-2         audio rate conversion library
ii  libsndfile1              1.0.12-3        Library for reading/writing audio 
ii  libspeex1                1.1.10-1        The Speex Speech Codec
ii  libvorbis0a              1.1.0-1         The Vorbis General Audio Compressi
ii  libvorbisenc2            1.1.0-1         The Vorbis General Audio Compressi
ii  libvorbisfile3           1.1.0-1         The Vorbis General Audio Compressi
ii  libx11-6                 6.8.2.dfsg.1-10 X Window System protocol client li
ii  libxext6                 6.8.2.dfsg.1-10 X Window System miscellaneous exte
ii  libxi6                   6.8.2.dfsg.1-10 X Window System Input extension li
ii  xlibs                    6.8.2.dfsg.1-10 X Window System client libraries m

Versions of packages sweep recommends:
pn  cmt                           <none>     (no description available)
pn  fil-plugins                   <none>     (no description available)
pn  mcp-plugins                   <none>     (no description available)
ii  swh-plugins [ladspa-plugin]   0.4.14-1   Steve Harris's LADSPA plugins
pn  tap-plugins                   <none>     (no description available)

-- no debconf information