Early in my career at Microsoft I was a PM on the C# compiler and language. Along with the QA and Dev lead we would regularly triage through bugs and decide when and whether they would be addressed. This was at a time when we'd spent the last 3 and 1/2 years working on VS 2002, .NET 1.0, C# 1.0, etc. We were approaching our release and so our triage bar for fixing issues was very high, particularly in the compiler, as we tend to stabilize platform components earlier than leaf components.
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We decided that the likelihood of that specific code was extremely unlikely so we could fix it in the next release or a service pack if needed.
Unfortunately, the cases in which this stepping problem occurred were many and varied. This information wasn't in the bug obviously, as the tester had reasonably entered it based on their initial findings. Many other bugs were entered over time that demonstrated the severity of the issue.
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