Re: Finding NSTableColumn in gdb

FROM : Eddy Hatcher
DATE : Tue Nov 13 23:26:18 2007

Thanks, that was what I was looking for, but now it gives me this 
message:

2007-11-13 23:12:34.298 SchoolCore[1073:813] Cocoa Bindings: Error 
accessing bound property value of object <NSTableColumn: 0x1b9ee0>: 
[<NSTableColumn 0x1b9ee0> valueForUndefinedKey:]: this class is not 
key value coding-compliant for the key value.
(gdb) po [0x1b9ee0 identifier]
Cannot access memory at address 0x0


Sorry, if these questions are too trivial. If it is can some one 
please point me to a site with some debugging stuff.

Ed

On Nov 13, 2007, at 11:02 PM, Nick Zitzmann wrote:

>
> On Nov 13, 2007, at 2:28 PM, Eddy Hatcher wrote:
>

>> Cocoa Bindings: Error accessing bound property value of object 
>> <NSTableColumn: 0x1bb120>: [<NSTableColumn 0x1bb120> 
>> valueForUndefinedKey:]: this class is not key value coding-
>> compliant for the key value.
>>
>> The application seems to work fine though and I cannot find any 
>> issues unless I break on NSException.
>> Is there a way to find out which table column is giving this error?

>
>
> There is, and it's in the message given to you - it's the one at the 
> memory address 0x1bb120. From there, you can use the GDB command 
> line to get the column's table view, identifier, and anything else 
> that may help (e.g. "po [0x1bb120 identifier]").
>
> Nick Zitzmann
> <http://www.chronosnet.com/>
>