Author: Jon Dart
Date: 13:08:19 10/23/02
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On October 23, 2002 at 15:25:04, Colin Frayn wrote: > >How annoying is that? :) >Can anyone beat this story? It's a good story. I once found a single wrong instruction in a 4-megabyte code image using an assembly-language debugger, and then patched the compiler that generated. I also spent a few days "blindly" fixing an assembly-language runtime that I couldn't run a debugger on, because it switched itself into protected mode and did other nasty system-level things (it was basically like an operating system loader). Try something, watch it crash, try something, watch it hang, bang head against wall .. repeat. But those weren't chess problems. The worst chess problems I've had were hashing errors where the actual symptom was thousands of nodes away from the real cause (the bad hash data that was inserted). Hashing is evil to debug because it makes the current program state heavily dependent on the past search history. --Jon
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