From preprocessor-constrained parse graphs to preprocessor-constrained control flow

Preprocessor-aware static analysis tools are needed for C Code to gain sound knowledge about the interference among all conditionally compiled program parts. We provide formal descriptions and algorithms to construct a preprocessor-aware control flow graph from preprocessor-aware parse graphs of SuperC. Based on the structure of parse graphs capturing the syntax nodes constrained by preprocessor constraints, we show how to model, formalize, and compute preprocessor-aware intra-procedural control-flow graphs. Such preprocessor-aware control-flow graphs may serve as the basis for subsequent preprocessor-aware control and data flow analyses.