[Bug 774851] New: glimagesink segfault when specifying GST_GL_WINDOW to something else than x11

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=774851

            Bug ID: 774851
           Summary: glimagesink segfault when specifying GST_GL_WINDOW to
                    something else than x11
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: florent.thiery at ubicast.eu
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Works:
GST_GL_PLATFORM=glx GST_GL_WINDOW=x11 gst-launch-1.0 videotestsrc ! glimagesink

GST_GL_PLATFORM=glx GST_GL_WINDOW=whatever gst-launch-1.0 videotestsrc !
glimagesink
(gst-launch-1.0:16437): GLib-GObject-WARNING **: invalid cast from
'GstGLDummyWindow' to 'GstGLWindowX11'
Caught SIGSEGV

0x00007ffff2ee855d in XQueryExtension () from /usr/lib/libX11.so.6
(gdb) bt
#0  0x00007ffff2ee855d in XQueryExtension () at /usr/lib/libX11.so.6
#1  0x00007ffff36154b7 in glXQueryExtension () at /usr/lib/libGL.so.1
#2  0x00007ffff45a92e3 in gst_gl_context_glx_choose_format (context=<optimized
out>, error=0x7fffffffad78) at gstglcontext_glx.c:322
#3  0x00007ffff4584d35 in gst_gl_context_create_thread (context=0x8a4080) at
gstglcontext.c:1192
#4  0x00007ffff6a2f0d5 in  () at /usr/lib/libglib-2.0.so.0
#5  0x00007ffff639b454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007ffff60de7df in clone () at /usr/lib/libc.so.6

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