tags:

views:

418

answers:

1
Q: 

NSTreeController - malloc double free error

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.

+3  A: 

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.

Peter Hosey  2009-02-15 06:28:21
Thanks. Tuns out my NSTableColumn subclass was misbehaving. And as I suspected, fixing this problem fixed my crasher too!
Rich Catalano  2009-02-16 21:06:40

related questions

[64-Bit] Why does malloc overwrite RSP and RSP+8?
Outputting to stderr whenever malloc/free is called
Can I allocate a specific number of bits in C?
Time complexity of memory allocation
Checking if something was malloced
Using Malloc Hooks
Free memory from a SafeArrayGetElem call?
Create a wrapper function for malloc and free in C
Memory allocation on Windows C code
How can I get the size of an array from a pointer in C?
Malloc Error: incorrect checksum for freed object
malloc() and the C/C++ heap
In what cases do I use malloc vs new?
Can you allocate a very large single chunk of memory ( > 4GB ) in c or c++?
What's a good C memory allocator for embedded systems?
Multithreaded Memory Allocators for C/C++
Will pthread_detach manage my memory for me?
What is the difference between vmalloc and kmalloc?
Stack overflow problem!
C pointer Q: malloc inside a fn call appears to be getting freed on return of fn?
How to log mallocs
Alignment restrictions for malloc()/free()
Has anybody used Google Performance Tools?
Scaling multithreaded applications on multicored machines
Why am I getting a malloc: double free error with realloc()?