May 102007
Heisenbugs
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A new word for me, as in:
“I reckon you can spend three weeks failing to fix that.”
“Yeah, it’s a bit of a Heisenbug.”
http://en.wikipedia.org/wiki/Unusual_software_bug
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My favorite ones are when two seemingly unrelated parts of the codebase rely on a common artifact such that when one part is in a valid state, the other part is in an invalid state, and vice versa.
Developers change the common artifact back and forth and back and forth and back and forth…