[Bug 749430] gltestsrc ! glimagesink crash on windows

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=749430

--- Comment #3 from Xavier Claessens <xclaesse at gmail.com> ---
Here is what I've found so far by debugging step by step in gdb:

The backtrace says that in _gen_fbo data is 0x140 (suspicious ptr) and when it
enters gst_gl_framebuffer_generate() frame is NULL. But that's actually a lie,
when breaking at the beginning of gst_gl_framebuffer_generate() frame is a
perfectly fine pointer and stack gets corrupted by the time it reach line 119.
If frame wasn't correct it wouldn't get that far anyway since the function
starts with g_return_val_if_fail (GST_IS_GL_FRAMEBUFFER (frame), FALSE);

So there is something between line 90 and 119 that corrupt the stack...

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