mplayer crashes in open_stream at streaming radio site

this crash seems to occur with 2:1.0~rc3+svn20090426-1ubuntu13 found in
lucid as well. There, this backtrace can be retrieved:

#0 0x0825a3e1 in real_parse_sdp (rtsp_session=0x8522870, bandwidth=0, username=0x0, password=0x0) at stream/realrtsp/real.c:241
        j = <value optimized out>
        n = -1
        b = "RC\n\000\000\000`\000\000\000p(R\b\n\000\000\000\263\v?\b\023#\274\001\004\000\000\000\001\000\000\000\002\000\000\000\377\377\377\377\004\000\000\000\263\v?\b\266\v?\b\264\v?\b\022\370\260\001\231\062"
        rulematches = {-1073749816, 28331980, -1208180384, 1, 5, 29249524, -1073749701, 8, -1073749784, 28345528, 139604568,
          -1073749701, 8, 0, 139602032, 139602032}
        desc = 0x85238f8
        buf = 0x8524598 ""
        avg_bit_rate = 0
        max_bit_rate = 0
        max_packet_size = 0
        avg_packet_size = 0
        len = <value optimized out>
        i = 0
        duration = 0
#1 real_setup_and_get_header (rtsp_session=0x8522870, bandwidth=0, username=0x0, password=0x0) at stream/realrtsp/real.c:551
        session_id = 0x8523400 "1715274-2"
        h = 0x8523970
        challenge1 = 0x85233c8 "05500325da15813b80c1f70e2e20fbfb"
        challenge2 = "R\b\000\000\000\000\003\000\000\000\266\v?\b\004\000\000\000\376\377\377\377\004\000\000\000\004\000\000\000\266\v?\b\263\v?\b\004\000"
        checksum = "\000\230\062R\b\003\000\000"
        subscribe = 0x85237f0 "Subscribe: "
        buf = <value optimized out>
        mrl = 0x8523100 "rtsp://accstream.polskieradio.pl:554/program1"
        size = <value optimized out>
        status = 0
        authfield = <value optimized out>
        i = <value optimized out>
#2 0x082508c5 in rtsp_session_start (fd=6, mrl=0xbfffe26c, path=0x84f9299 "program1", host=0x84f9278 "accstream.polskieradio.pl",
    port=554, redir=0xbfffe268, bandwidth=0, user=0x0, pass=0x0) at stream/librtsp/rtsp_session.c:141
        rtsp_session = 0x84f9410
        server = 0x8523268 "Helix Mobile Server Version 13.0.0.479 (win32) (RealServer compatible)"
        h = <value optimized out>
#3 0x0824ab27 in rtsp_streaming_start (stream=0x8521588, mode=0, opts=0x0, file_format=0x844f348) at stream/stream_rtsp.c:99
        fd = 6
        mrl = 0x8522838 "rtsp://accstream.polskieradio.pl:554/program1"
        file = 0x84f9299 "program1"
        temp = 5
        rtsp = <value optimized out>
        port = <value optimized out>
        redirected = 0
#4 rtsp_streaming_open (stream=0x8521588, mode=0, opts=0x0, file_format=0x844f348) at stream/stream_rtsp.c:159
        url = <value optimized out>
#5 0x081b49fd in open_stream_plugin (sinfo=0x83eff00, filename=0x84fd308 "rtsp://accstream.polskieradio.pl/program1", mode=0,
    options=0x0, file_format=0x844f348, ret=0xbfffe34c, redirected_url=0xbfffe348) at stream/stream.c:155
        arg = 0x0
        s = 0x8521588
        desc = 0x0
#6 0x081b4cd3 in open_stream_full (filename=0x84fd308 "rtsp://accstream.polskieradio.pl/program1", mode=0, options=0x0,
    file_format=0x844f348) at stream/stream.c:208
        i = 6
        r = 0
        s = <value optimized out>
        redirected_url = 0x0
#7 0x081b433b in open_stream (filename=0x85239d0 "", op...

this should be fixed by this upstream commit:
------------------------------------------------------------------------
r29626 | reimar | 2009-09-02 12:55:36 +0200 (Mi, 02 Sep 2009) | 3 lines

Fix possible crashes with invalid SDPs that result in stream descriptions
not being initialized.

Index: real.c
===================================================================
--- real.c (revision 29625)
+++ real.c (revision 29626)
@@ -235,6 +235,8 @@
     char b[64];
     int rulematches[MAX_RULEMATCHES];

+ if (!desc->stream[i])
+ continue;
 #ifdef LOG
     printf("calling asmrp_match with:\n%s\n%u\n", desc->stream[i]->asm_rule_book, bandwidth);
 #endif

This bug was fixed in the package mplayer - 2:1.0~rc3+svn20090426-1ubuntu14

---------------
mplayer (2:1.0~rc3+svn20090426-1ubuntu14) lucid; urgency=low

  * cleanup --configure flags
  * drop VDPAU build hacks, Closes: #566868, LP: #530481, #532007
  * enable musepack support
  * enable libaa support, LP: #502767, #455535
  * enable enca support, LP: #115519
  * remove DEB_BUILD_CONFIGURE override hack
  * fix weird permission bits for mplayer.desktop and mplayer.xpm
  * reorganize binary packages to no longer install the gui version by
    default
  * refactor debian/rules to avoid sub makes
  * add patch to allow compilation with newer x264
  * use mp_msg instead of printf in debug help message
  * bump standards version
  * as no longer used, remove dependencies on debconf
  * Fix possible crashes with invalid SDPs, LP: #519579
  * add missing replaces
  * install manpages in the 'mplayer' package. and only there
 -- Reinhard Tartler <email address hidden> Thu, 11 Mar 2010 12:45:55 +0100