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Re: Collection was mutated while being enumerated

Since installing Leopard I'm seeing the following appear appear in
the console: "*** Collection <NSCFDictionary: 0x5e2e540> was mutated
while being enumerated."

I imagine this was something happening in the code before Leopard
but Leopard started logging it. Is there by any chance a breakpoint
I can set to catch where this is occurring? Would be handy.

Several ways; the first way is to link against Leopard. The second way
is to set the user default: NSFastEnumerationShouldThrow=YES.

NSFastEnumerationShouldThrow, eh? 0 hits with Google, 0 hits in Xcode's
doc viewer. :) Are there other new secret debugging aids in 10.5?

Yes, there are lots. I recommend taking a moment to read the AppKit release notes, as there are several new debugging secrets mentioned there:

http://developer.apple.com/releasenotes/Cocoa/AppKit.html

Granted, this one isn't there, but linking against Leopard would cause it to raise an exception and be easily debuggable.

-corbin
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References: 
 >Collection was mutated while being enumerated (From: Philip Dow <email@hidden>)
 >Re: Collection was mutated while being enumerated (From: Corbin Dunn <email@hidden>)
 >Re: Collection was mutated while being enumerated (From: "Sean McBride" <email@hidden>)



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