The _instances mutable array is instantiated in the default init method that is called on all other init methods. It is never released. I am using an Auto release pool. The log writes ;

2009-04-08 13:56:53.189 TestRunner[2568:813] *** -[NSFileManager fileExistsAtPath:]: unrecognized selector sent to instance 0x1126f0

When releasing a pointer does its value change ? or it just releases the memory ?
What is that zombie thing you're talking about ?


On Apr 8, 2009, at 1:53 PM, Graham Cox wrote:


On 08/04/2009, at 10:33 PM, Daniel Luis dos Santos wrote:

if ((nil != saID) && ([[saID class] isSubclassOfClass: [NSData class]])) {
                //[_instances addObject: aDriverInstance];

When I uncomment the addObject line above, later in the code NSFileManager throws a doesNotRespondToSelector exception, which is very odd.



Still not enough to go on.

Where is _instances initialised? Is it released anywhere? What does the exception log? Is it possible _instances could be being released leaving a stale pointer that points to NSFileManager? Have you run it with NSZombieEnabled turned on? Any difference?

Please post the *relevant* code.

--Graham



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