Chapter 1. Bug Classification
This chapter covers the classification of bugs used in this book. It is based on a classification done by the computer scientist Donald Knuth. Each bug type is identified with the notation C.subcategory, where C is the initial of one of the main categories (A, D, F, or B) and subcategory is a descriptive name.
More details and explanations of these classifications can be found in Appendix A, “Classification of Bugs.” Types of bugs marked with an [*] do not appear in any of the examples.
A–Algorithm. The algorithm that the programmer designed is incorrect.
A.off-by-one. The program makes a calculation that is off by one.
A.logic. The algorithm has a logical flaw.
A.validation. Variables are not properly checked to ensure ...
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