Tips for debugging EXC_BAD_ACCESS

[Jacob Carlborg]

I didn't have any luck with this in the learn newsgroup so I'm trying here.

I'm trying to debug the Mac OS X port of DWT. Almost as soon as a DWT 
application starts to process events I receive a segmentation fault. The 
error happens in the "objc_msgSend" C function when calling an 
Objective-C method. GDB backtrace:

http://pastebin.com/0fmUmPQ1

The source code of DWT is located here:

https://github.com/d-widget-toolkit/dwt-mac

The error happens at this call:

https://github.com/d-widget-toolkit/dwt-mac/blob/master/dwt/widgets/Shell.d#L1874

Which calls:

https://github.com/d-widget-toolkit/dwt-mac/blob/master/dwt/widgets/Widget.d#L1824

Then:

https://github.com/d-widget-toolkit/dwt-mac/blob/master/dwt/widgets/Widget.d#L230

Some other points of interest:

https://github.com/d-widget-toolkit/dwt-mac/blob/master/dwt/widgets/Display.d#L4871

https://github.com/d-widget-toolkit/dwt-mac/blob/master/dwt/widgets/Shell.d#L1818

https://github.com/d-widget-toolkit/dwt-mac/blob/master/dwt/widgets/Display.d#L4501

https://github.com/d-widget-toolkit/dwt-mac/blob/master/dwt/widgets/Display.d#L4367

-- 
/Jacob Carlborg