[Bug 35347] VST plugins crash on LMMS

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=35347

--- Comment #7 from Sebastian Lackner <sebastian at fds-team.de> ---
The problem seems to be clear, but I'm not yet sure whats the right way to fix
that.

Based on your log the VST wrapper you're using generates an invalid XEMBED
event:
trace:event:handle_xembed_protocol win 0x10048/6600003 XEMBED_EMBEDDED_NOTIFY
owner 0

Based on the specification the owner should be a valid XWindow handle instead:
http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html

Is the source of the wrapper somewhere available?

A possible workaround would be to catch such invalid messages, for example by
replacing the if clause here:

1664             /* window has been marked as embedded before (e.g. systray) */
1665             if (data->embedded)

with:

if (data->embedded || !data->embedder)

Does this help to workaround the problem?

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