[sylpheed:34576] Re: Minimal working plug-in in FreePascal
Hiroyuki Yamamoto
hiro-y at kcn.ne.jp
Mon May 16 10:55:59 JST 2011
Hello,
On Sun, 15 May 2011 19:51:10 +0400
Anton Shepelev <anton.txt at gmail.com> wrote:
> Hello all,
>
> I have tried to write a minimal working plugin for Sylpheed
> in FreePascal, using Hiroyuki Yamamoro's sample "Test Plu-
> gin" as reference, and have run into a strange proglem.
>
> My plugin successfully loads, adds a menu item, intercepts
> plugin signals (syl_plugin_signal_connect) and application
> signals (g_signal_connect), but it seems somehow to damage
> the Gtk-2.0's window showing functions.
>
> For example, a click on the
>
> Configuration -> Common preferences
>
> causes Sylpheed to crash with the last message in the debug
> window being:
>
> Creating common preferences window...
>
> The same happens when trying to create a new window from
> within the plugin. The exception occurs during the call to
> the gtk_widget_show_all function.
>
> Do you have any ideas as to the way a plugin can indirectly
> cause a crash? Should anybody want to look into the problem,
> I will provide the sources and binaries of my test plugin.
There can be some cause for that.
1. memory corruption (double free etc.)
2. missing thread locking
For example, glib callback function (timeout, watch, idle func)
requires g_threads_enter/leave() locking.
--
Hiroyuki Yamamoto <hiro-y at kcn.ne.jp>
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