| heisenbug /hi:'zen-buhg/ (From Heisenberg's Uncertainty Principle in quantum physics) A bug that disappears or alters its behaviour when one attempts to probe or isolate it. (This usage is not even particularly fanciful; the use of a debugger sometimes alters a program's operating environment significantly enough that buggy code, such as that which relies on the values of uninitialised memory, behaves quite differently.) In , nine out of ten heisenbugs result from uninitialised auto variables, phenomena (especially lossage related to corruption of the malloc ) or errors that . Opposite: . See also , . [] (1995-02-28) |
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