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Setting conditional breakpoint on Cocoa method?

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Setting conditional breakpoint on Cocoa method?

Subject: Setting conditional breakpoint on Cocoa method?
From: Graham Cox <email@hidden>
Date: Mon, 28 Jul 2008 17:02:53 +1000

Once in a blue moon, I get a console message that a nil string was passed to [NSConcreteAttributedString initWithString:] I'd like to find out where this is coming from by setting a breakpoint there, but only for a nil string. Adding the breakpoint as a symbol to the symbolic breakpoints works, but I can't set the condition (e.g. aString == nil), since the parameter's name isn't available.

What can I do, since this method is called hundreds of times in the normal course of things, so just having an unconditional breakpoint isn't very useful. Can I specify a register somehow?

tia,

Graham

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