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Clang Static Analyzer and the Z3 constraint solver (2022)
Notes on using the Z3 constraint solver with the Clang Static Analyzer
Frederic Cambus June 21, 2022 [ LLVM] [ Compilers] [ Toolchains] As far as static analyzers are concerned, one of the most important point to consider is filtering out false positives as much as possible, in order for the reports to be actionable. This is an area on which Coverity did an excellent job, and likely a major reason why they got so popular within the open source community, despite being a closed-source product. We get a false positive, because the default constraint solver cannot reason about bitwise operations (among other things), and report an unreachable NULL pointer dereference.
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