Declarative, Defect, Generative, Impossible
Explore key software trace and log patterns in this lesson, including declarative traces, defect group analysis, generative traces, and impossible traces. Learn to interpret trace messages, analyze source code relations, and identify anomalies like missing or sparse traces to improve diagnostic accuracy.
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Declarative trace
The trace statements in the source code can be considered as a declarative trace from analogy with variable declaration and definition in programming languages such as C and C++. Declaration of the variable doesn’t mean that the variable is used. Some declared variables such as arrays expand in memory when used (as in .bss sections). The same is true for trace messages from a declarative trace. Some don’t appear in the actual software execution trace, and some are repeated because of loops and multiple code reentrance. However, declarative traces are useful for studying the possibilities of trace and log designs, implementation, and coverage (for example, sparse trace). Some trace analysis patterns are also applicable for declarative traces such as ...