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Bug Programming Games

Whose Bug Is This Anyway? 241

Posted by Soulskill
from the it's-nobody's-fault-and-everybody's-angry dept.
An anonymous reader writes "Patrick Wyatt, one of the developers behind the original Warcraft and StarCraft games, as well as Diablo and Guild Wars, has a post about some of the bug hunting he's done throughout his career. He covers familiar topics — crunch time leading to stupid mistakes and finding bugs in compilers rather than game code — and shares a story about finding a way to diagnose hardware failure for players of Guild Wars. Quoting: '[Mike O'Brien] wrote a module ("OsStress") which would allocate a block of memory, perform calculations in that memory block, and then compare the results of the calculation to a table of known answers. He encoded this stress-test into the main game loop so that the computer would perform this verification step about 30-50 times per second. On a properly functioning computer this stress test should never fail, but surprisingly we discovered that on about 1% of the computers being used to play Guild Wars it did fail! One percent might not sound like a big deal, but when one million gamers play the game on any given day that means 10,000 would have at least one crash bug. Our programming team could spend weeks researching the bugs for just one day at that rate!'"
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Whose Bug Is This Anyway?

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