Microsoft veteran recalls how a CPU errata, a mythical ICE, and a single sneaky NOP saved Clippy big debut Veteran Microsoft engineer Raymond Chen shared another fireside tale – one to strike fear into the hearts of engineers everywhere: the bug that cant be replicated in the debugger. The story begins near the end of the Word 97 release cycle, when a defect surfaced in the test labs but vanished the moment engineers reached for a debugger. It was maddening. A script could trigger the crash...

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