Re: [Gtk-osx-users] [gtk-osx-users] Bug: global_event_filter_func crashes every startup trying to send "type" message

[John R. <jr...@ce...>]

> On Dec 15, 2014, at 7:14 PM, Philip Ries <ph...@gm...> wrote:
> 
> Hello again,
> 
> When I build and run RawTherapee (https://code.google.com/p/rawtherapee/source/checkout <https://code.google.com/p/rawtherapee/source/checkout>), it always crashes on startup in gtkosxapplication:
> 
> (lldb) bt
> * thread #1: tid = 0xb3c104, 0x00007fff96bc20dd libobjc.A.dylib`objc_msgSend + 29, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x30)
>     frame #0: 0x00007fff96bc20dd libobjc.A.dylib`objc_msgSend + 29
>   * frame #1: 0x000000010252a547 libgtkmacintegration-gtk2.2.dylib`global_event_filter_func(windowing_event=0x00007fff5fbfe8c8, event=0x0000000105caddf0, user_data=0x00000001058fb8a0) + 55 at gtkosxapplication_quartz.c:514
>     frame #2: 0x0000000101974290 libgdk-x11-2.0.0.dylib`gdk_event_translate + 79
>     frame #3: 0x0000000101975bd2 libgdk-x11-2.0.0.dylib`_gdk_events_queue + 173
>     frame #4: 0x0000000101976f1b libgdk-x11-2.0.0.dylib`gdk_event_dispatch + 35
>     frame #5: 0x00000001013f7909 libglib-2.0.0.dylib`g_main_context_dispatch + 282
>     frame #6: 0x00000001013f7bf5 libglib-2.0.0.dylib`g_main_context_iterate + 413
>     frame #7: 0x00000001013f7e3f libglib-2.0.0.dylib`g_main_loop_run + 195
>     frame #8: 0x000000010163327c libgtk-x11-2.0.0.dylib`gtk_main + 180
>     frame #9: 0x0000000101dfaccd libgtkmm-2.4.1.dylib`Gtk::Main::run(Gtk::Window&) + 157
>     frame #10: 0x000000010039544f rawtherapee`main(argc=1, argv=0x00007fff5fbffb18) + 9071 at main.cc:284
>     frame #11: 0x00007fff938ee5c9 libdyld.dylib`start + 1
> 
> I'm not sure of the underlying reason, but the crash is right here:
>   if ([nsevent type] == NSKeyDown &&
>       gtkosx_application_use_quartz_accelerators (app) )
>     {
> global_event_filter_func runs this code unconditionally, causing the crash in this case because the "type" message is sent to an invalid object (nsevent).
> 
> As a hack, filtering out GDK_NOTHING as the value of event->type fixes the crash and the application works fine as far as I can tell.
> 
> I have Mac OS X 10.10.1 and GTK 2.24.25, and I used the XCode compiler for both the application and gtkosxapplication. Let me know if I can provide any further information.

You’ve got an X11 build of gtk. That doesn’t work with gtk-mac-integration. You need to rebuild gtk with the quartz backend.

You’re making life hard on yourself by not using the gtk-osx build system. Why?

Regards,
John Ralls