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Abstract

A preprocessor-based instrumentation technique wherein source code is provided to a compiler that exposes data structures such as symbols, types, expressions, etc. during the construction of the syntax tree in order to analyze where possible defects might make it desirable to instrument the code. Once a possible defect is detected in a segment of code, information is stored in a PI file detailing what line or lines of code to add, remove, or alter so that the code is instrumented to monitor the code segments at runtime. The PI file and source code are then provided to a preprocessor that uses the information in the PI file to insert instrumentation into the source code prior to the construction of a syntax tree. The now instrumented source code is used to build an instrumented syntax tree, which is then compiled so as to produce executable object code.

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First Claim