MPlayer interrupted by signal 11 in module: demux_open

[leander256@…]

When trying to play an RTSP stream from my ISP, Mplayer segfaults:

$ gdb ./mplayer

warning: Can not parse XML syscalls information; XML support was disabled at compile time.
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Reading symbols from /tmp/mplayer/mplayer...done.
(gdb) set args "rtsp://mafreebox.freebox.fr/fbxtv_pub/stream?namespace=1&service=202&flavour=sd"
(gdb) run
Starting program: /tmp/mplayer/mplayer "rtsp://mafreebox.freebox.fr/fbxtv_pub/stream?namespace=1&service=202&flavour=sd"
[Thread debugging using libthread_db enabled]
MPlayer SVN-r30092-4.4.2 (C) 2000-2009 MPlayer Team

Playing rtsp://mafreebox.freebox.fr/fbxtv_pub/stream?namespace=1&service=202&flavour=sd.
Resolving mafreebox.freebox.fr for AF_INET...
Connecting to server mafreebox.freebox.fr[212.27.38.253]: 554...
librtsp: server responds: 'RTSP/1.0 403 Forbidden'
Timeout! No data from host 192.168.0.60
rtsp_session: unsupported RTSP server. Server type is 'fbxrtspd/1.2 Freebox RTSP server'.
STREAM_LIVE555, URL: rtsp://mafreebox.freebox.fr/fbxtv_pub/stream?namespace=1&service=202&flavour=sd
Stream not seekable!

file format detected.

Initiated "video/MP2T" RTP subsession on port 55692

Program received signal SIGSEGV, Segmentation fault.
new_demuxers_demuxer (vd=0x0, ad=0x0, sd=0x0) at libmpdemux/demux_demuxers.c:51
51 ret->stream = vd->stream;
(gdb) bt
#0 new_demuxers_demuxer (vd=0x0, ad=0x0, sd=0x0) at libmpdemux/demux_demuxers.c:51
#1 0x00000000005dc050 in demux_open_rtp ()
#2 0x000000000050ae4e in demux_open_stream (stream=<value optimized out>, file_format=21, force=<value optimized out>, audio_id=<value optimized out>, video_id=<value optimized out>,

dvdsub_id=<value optimized out>, filename=0x12d6400 "rtsp://mafreebox.freebox.fr/fbxtv_pub/stream?namespace=1&service=202&flavour=sd") at libmpdemux/demuxer.c:794

#3 0x000000000050b474 in demux_open (vs=<value optimized out>, file_format=<value optimized out>, audio_id=19927728, video_id=<value optimized out>, dvdsub_id=2097152,

filename=0x12d6400 "rtsp://mafreebox.freebox.fr/fbxtv_pub/stream?namespace=1&service=202&flavour=sd") at libmpdemux/demuxer.c:1002

#4 0x000000000047b091 in main (argc=19879302, argv=<value optimized out>) at mplayer.c:3280

I stepped a bit in the code with GDB, the problem comes from libmpdemux/demux_rtp.cpp:285 where the return value from demux_open() isn't checked against NULL.