[Bug 684765] New: Plugins without a klass in the metadata crashes autoaudiosink

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=684765
  GStreamer | gst-plugins-base | git

           Summary: Plugins without a klass in the metadata crashes
                    autoaudiosink
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: dwnarvaez at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


I have a plugin which doesn't call gst_element_class_set_static_metadata and it
causes this crash in the autoaudiosink:

gst-launch-1.0 -v -m audiotestsrc ! audioconvert ! audioresample !
autoaudiosink
Setting pipeline to PAUSED ...
Before klass
Caught SIGSEGV accessing address (nil)
#0  0x0000003ac780eb1a in __libc_waitpid (pid=21796, 
#1  0x00007f263ab19e58 in g_on_error_stack_trace (
#2  0x0000000000403b0e in fault_spin () at gst-launch.c:139
#3  fault_handler_sigaction (signum=<optimized out>, si=0x7fff490f76b0, 
#4  <signal handler called>
#5  __strstr_sse42 (s1=0x0, s2=0x7f26335b557c "Sink")
#6  0x00007f26335b1d96 in gst_auto_audio_sink_factory_filter (
#7  0x00007f263b4fd868 in gst_registry_feature_filter (registry=0x15cc010, 
#8  0x00007f26335b13b9 in gst_auto_audio_sink_find_best (sink=0x183a000)
#9  gst_auto_audio_sink_detect (sink=0x183a000) at gstautoaudiosink.c:348
#10 gst_auto_audio_sink_change_state (element=0x183a000, 
#11 0x00007f263b4ce55c in gst_element_change_state (
#12 0x00007f263b4cef31 in gst_element_set_state_func (element=0x183a000, 
#13 0x00007f263b4b6fbc in gst_bin_element_set_state (next=GST_STATE_READY, 
#14 gst_bin_change_state_func (element=0x18420c0, 
#15 0x00007f263b4ce55c in gst_element_change_state (
#16 0x00007f263b4cef31 in gst_element_set_state_func (element=0x18420c0, 
#17 0x00000000004032b9 in main (argc=8, argv=0x7fff490f8358)
Spinning.  Please run 'gdb gst-launch- 1.0 21792' to continue debugging, Ctrl-C
to quit, or Ctrl-\ to dump core.

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