Re: Debugging: do CFZombieLevel and objc_exception_throw() work for you?
Re: Debugging: do CFZombieLevel and objc_exception_throw() work for you?
- Subject: Re: Debugging: do CFZombieLevel and objc_exception_throw() work for you?
- From: Chris Suter <email@hidden>
- Date: Wed, 12 Jul 2006 07:07:03 +1000
On 12/07/2006, at 5:55 AM, Scott Ellsworth wrote:
I tried the same thing with an NSString, and with CFZombieLevel (1,
19, 5, and a few other values based on the tech note), and all I
got were bad access exceptions.
Just thought I'd point out that I think the numbers you used don't
look quite right. The tech. note doesn't define what 5 would do; the
table in the note uses bit numbers. From my understanding of the
note, you'll get a crash for most settings of CFZombieLevel except
for 8 (never free memory used to hold CF objects) and under certain
circumstances 2 (when scribbling deallocated CF memory, don't
scirbble object header (CFRuntimeBase)). I guess you'll get similar
results to NSZombieEnabled by setting CFZombieLevel to 9 (although
obviously you'll get a crash rather than an exception thrown, but
that's just as good).
- Chris
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