NSTreeController - malloc double free error

StackOverflow https://stackoverflow.com/questions/550305

  •  23-08-2019
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Question

I'm using an NSTreecontroller in conjunction with an NSOutlineView in my program, and my program is constantly spitting out: malloc: *** error for object 0x1d70d0: double free. These messages go away when I remove the bindings in IB. Any idea why this is happening?

Note: This is behavior is not crashing my program, but I suspect that it might be the root of a crasher.

Was it helpful?

Solution

NSTreeController had some broken behavior in Tiger. I don't know whether they've fixed it in Leopard.

As Rentzsch suggests, use NSZombieEnabled to trap the second free attempt (assuming it's a dealloc). See TN2124 for instructions.

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