We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

Call Stack:
#0	0x0000000101c29291 in Cocoa_StartTextInput at /Users/Todd/Desktop/codes/sources/SDL/src/video/cocoa/SDL_cocoakeyboard.m:512
#1	0x0000000101c110c5 in SDL_SetKeyboardFocus at /Users/Todd/Desktop/codes/sources/SDL/src/events/SDL_keyboard.c:643
#2	0x0000000101c32be4 in SetupWindowData at /Users/Todd/Desktop/codes/sources/SDL/src/video/cocoa/SDL_cocoawindow.m:981
#3	0x0000000101c32d2a in Cocoa_CreateWindowFrom at /Users/Todd/Desktop/codes/sources/SDL/src/video/cocoa/SDL_cocoawindow.m:1092
#4	0x0000000101c99999 in SDL_CreateWindowFrom_REAL at /Users/Todd/Desktop/codes/sources/SDL/src/video/SDL_video.c:1338
#5	0x0000000101ce1484 in SDL_CreateWindowFrom at /Users/Todd/Desktop/codes/sources/SDL/src/dynapi/SDL_dynapi_procs.h:547
#6	0x0000000100018a5e in SceneRenderer at /Users/Todd/Desktop/codes/sources/tseiler_Todds-MacBook-Pro_3405/AppName/src/SceneRenderer.cpp:138
#7	0x0000000100017ca5 in SceneRenderer at /Users/Todd/Desktop/codes/sources/tseiler_Todds-MacBook-Pro_3405/AppName/src/SceneRenderer.cpp:145
#8	0x000000010000cd96 in App::execute(int, char**) at /Users/Todd/Desktop/codes/sources/tseiler_Todds-MacBook-Pro_3405/AppName/src/App.cpp:28
#9	0x0000000100004402 in main at /Users/Todd/Desktop/codes/sources/tseiler_Todds-MacBook-Pro_3405/AppName/src/main.cpp:8


This issue occurred when using Ogre3D Graphics engine on Mac (cocoa) to create the window. Then handing the window handle off to SDL_CreateWindowFrom().

In Ogre3D application you do the following:
        window_ = root_->initialise(true, "Ogre Window 2");
        loadOgreResources();
        Ogre::WindowEventUtilities::addWindowEventListener(window_, this);

#if OGRE_PLATFORM == OGRE_PLATFORM_APPLE
        NSWindow* Data = 0;
        window_->getCustomAttribute("WINDOW", &Data);
        sdl_window_ = SDL_CreateWindowFrom((void*)Data);
#endif

It results in a crash in this function:
SDL_cocoakeyboard.m

void
Cocoa_StartTextInput(_THIS)
{
    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    SDL_Window *window = SDL_GetKeyboardFocus();
    NSWindow *nswindow = nil;
    if (window)
        nswindow = ((SDL_WindowData*)window->driverdata)->nswindow;
        
    // ...
}

The crash occurred because "driverdata" was nil. Before this function call, a call to SetupWindowData is called:

SDL_cocoawindow.m

static int
SetupWindowData(_THIS, SDL_Window * window, NSWindow *nswindow, SDL_bool created)
{
    // ...

    if ([nswindow isKeyWindow]) {
        window->flags |= SDL_WINDOW_INPUT_FOCUS;
        SDL_SetKeyboardFocus(data->window);
    }

    /* Prevents the window's "window device" from being destroyed when it is
     * hidden. See http://www.mikeash.com/pyblog/nsopenglcontext-and-one-shot.html
     */
    [nswindow setOneShot:NO];

    /* All done! */
    [pool release];
    window->driverdata = data;
    return 0;
}

As you can see: "window->driverdata = data" is performed after the "SDL_SetKeyboardFocus()" call, which eventually leads to "Cocoa_StartTextInput()" where the crash occurs.

I changed the code to the following and it seemed to work...:

SDL_cocoawindow.m
static int
SetupWindowData(_THIS, SDL_Window * window, NSWindow *nswindow, SDL_bool created)
{
    // ...

    window->driverdata = data;
    if ([nswindow isKeyWindow]) {
        window->flags |= SDL_WINDOW_INPUT_FOCUS;
        SDL_SetKeyboardFocus(window);
    }

    /* Prevents the window's "window device" from being destroyed when it is
     * hidden. See http://www.mikeash.com/pyblog/nsopenglcontext-and-one-shot.html
     */
    [nswindow setOneShot:NO];

    /* All done! */
    [pool release];

    return 0;
}

It makes sense to set window->driverdata before the call to SDL_SetKeyboardFocus() since SDL_SetKeyboardFocus() uses window->driverdata.