Edit your Scheme and go to the "Run" section. Then go to the Diagnostics tab.

On Mar 16, 2011, at 12:35 PM, Sean McBride wrote:

> On Wed, 16 Mar 2011 10:31:26 -0700, James Maxwell said:
> 
>> Okay, strange discovery.
>> 
>> I wasn't sure how to enable Guard Malloc in Xcode 4
> 
> Someone on the Xcode list could probably help there...
> 
>> , so I just ran it
>> with the Allocations Instrument. Lo and behold, it doesn't crash. This
>> didn't make much sense to me, so I tried running the release build,
>> rather than the debug build. No crash. Switch back to debug.... boom.
>> 
>> Any thoughts on what this might mean?
> 
> Have you looked at the Debugging Magic technote?  It's well worth
> reading in its entirety.
> 
> <http://developer.apple.com/library/mac/#technotes/tn2004/tn2124.html>
> 
> All the bits about memory management should help you debug this.
> 
> --
> ____________________________________________________________
> Sean McBride, B. Eng                 s...@rogue-research.com
> Rogue Research                        www.rogue-research.com
> Mac Software Developer              Montréal, Québec, Canada
> 
> 
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