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Definition of a heisenbug



  • in computing, a bug that disappears or changes its behavior when an attempt is found to locate its source or to generally investigate it.

    This is an actual occurrence, since tools such as debuggers do change a program's behavior. Even "innocuous" techniques such emitting debugging output to a console changes the runtime of programs and can affect timing-related issues.

    Last edited on Nov 15 2011. Submitted by WalterGR (via TheJargonFile) on Aug 14 2009.


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Other terms relating to 'computer slang':

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