As a software system evolves, programmers make changes that sometimes cause problems. We analyze CVS archives for fix-inducing changes---changes that lead to problems, indicated by fixes. We show how to automatically locate fix-inducing changes by linking a version archive (such as CVS) to a bug database (such as BUGZILLA). In a first investigation of the MOZILLA and ECLIPSE history, it turns out that fix-inducing changes show distinct patterns with respect to their size and the day of week they were applied.
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Śliwerski et al. (2005) studied this question.