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why are conditional breakpoints SO SLOW?
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why are conditional breakpoints SO SLOW?


  • Subject: why are conditional breakpoints SO SLOW?
  • From: Roland King <email@hidden>
  • Date: Tue, 18 Mar 2014 23:33:06 +0800

I'm working on an OSX app. I have an issue 1,500,000 odd bytes into my file. A normal run gets there so fast you can't tell it's executing, fraction of a second.

So I added a conditional breakpoint with the expression

offset == 1512800 (the actual count I have the issue).

The debug crawls. After about 5 minutes of running and a very hot laptop I'm at offset around 600,000, so I have another 8 or so minutes to go to get to where I usually fail in milliseconds.

If I turn off that one conditional breakpoint, the code finishes (with the error) instantly. How can a trivial conditional breakpoint be this incredibly slow?
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