I'm trying to catch a nasty intermittent crash in one of my apps.
Apple's crash reporter returns:
Command: ImageTrak
Path: /Applications/ImageTrak.app/Contents/MacOS/ImageTrak
Parent: WindowServer [60]
Version: ??? (2.4.0)
PID: 853
Thread: 0
Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_INVALID_ADDRESS (0x0001) at 0x081790e0
Thread 0 Crashed:
0 rbframework.dylib 0x00cbd4f4 memoryGetUShort + 112
1 ImageTrak 0x008c67d4
MemoryBlock.UShort%i4%o<MemoryBlock>i4 + 68
2 ImageTrak 0x001830fc
imageDisplayWindow.imageDisplayWindow.calcRGBPixelValues%i4%o<imageDisplayWindow>i4i4&i4&i4&i4
+ 7008
3 ImageTrak 0x0019c4d8
imageDisplayWindow.imageDisplayWindow.displayCoordsAndPixelValues%%o<imageDisplayWindow>i4i4bb
+ 9028
4 ImageTrak 0x001f9dd4
imageDisplayWindow.imageDisplayWindow.updateToolsWindowInfo%%o<imageDisplayWindow>b
+ 20764
.....
I assume this is the call chain with the most recent (and presumably
offending) call at the top?
Question: are these logs reliable and should I be indeed looking for a
bad memBlock.ushort access that is referencing an invalid address?
I'm left wondering because I wrote a small test app that calls several
methods in turn, with the last one deliberately accessing non-existent
memory. That crash log did not contain any of the method names that
were sequentially called to trigger the crash.
Many thanks,
Peter.
--
-------------------------------------------------------------------------------
Peter K. Stys, MD
Professor of Medicine(Neurology), Senior Scientist
Ottawa Health Research Institute, Div. of Neuroscience
Ottawa Hospital / University of Ottawa
Ontario, CANADA
tel: (613)761-5444
fax: (613)761-5330
http://www.ohri.ca/profiles/stys.asp
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