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Clang Static Analyzer
What it is
Clang Static Analyzer finds bugs in C, C++ and Objective-C programs using path-sensitive analysis based on symbolic execution. Its analysis follows execution paths across function calls. The analyzer is open source and part of the Clang project, and its implementation is also a reusable C++ library for other tools. Official releases include scan-build, a command-line tool for analyzing a codebase. On macOS, it can be invoked from Xcode; clang-analyzer checks can also be enabled alongside clang-tidy, and Clang-based IDEs may integrate it natively. Documentation covers command-line use with scan-build and CodeChecker. The analyzer runs on Linux, macOS and Windows, and is self-hosted. It is free, with a listed plan of free. Its findings are limited to bug types it was designed to detect; analysis can take longer than compilation, some algorithms have exponential worst-case time, and false positives can occur. Current LLVM releases use the Apache-2.0 with LLVM-exception license.
For and against
For
- Free and open source as part of Clang.
- Supports C, C++ and Objective-C.
- Offers scan-build command-line analysis.
- Can integrate with Xcode and clang-tidy.
- Runs on Linux, macOS and Windows.
Against
- Analysis can be slower than compilation.
- Some algorithms have exponential worst-case time.
- False positives can occur.
- Detects only bugs it was designed to find.
The verdict
Clang Static Analyzer offers several ways to add static analysis to a Clang workflow without a listed charge. Its scope and possible runtime and false-positive costs are important considerations.
Who it suits
It suits developers working in C, C++ or Objective-C who want static analysis through command-line tools, Xcode, clang-tidy or a Clang-based IDE. Teams should account for analysis time and possible false positives.
Plans and prices
Clang Static Analyzer
100% open source · analyzes C, C++ and Objective-C
Read 2 Oct 2026 · clang.llvm.org
On the record
- Additional tooling
- The documentation provides command-line usage guidance for scan-build and CodeChecker.clang.llvm.org · read 2 Oct 2026
- Analysis method
- It implements path-sensitive, inter-procedural analysis based on symbolic execution.clang.llvm.org · read 2 Oct 2026
- clang-tidy integration
- The analyzer can run alongside clang-tidy by enabling clang-analyzer checks.clang.llvm.org · read 2 Oct 2026
- Command line
- Official releases include scan-build, a command-line tool for running the analyzer on a codebase.clang.llvm.org · read 2 Oct 2026
- Community support
- LLVM provides a Discourse forum and mailing-list announcement category for release notifications.releases.llvm.org · read 2 Oct 2026
- Contributions
- Users can report false positives, file feature requests or contribute patches.clang.llvm.org · read 2 Oct 2026
- False positives
- The analyzer can falsely flag bugs in code that behaves correctly, with frequency varying by check.clang.llvm.org · read 2 Oct 2026
- IDE integration
- An IDE using Clang may natively integrate the static analyzer.clang.llvm.org · read 2 Oct 2026
- Library
- The analyzer is implemented as a reusable C++ library for other tools and applications.clang.llvm.org · read 2 Oct 2026
- License
- Current LLVM releases are distributed under the Apache-2.0 with LLVM-exception license.releases.llvm.org · read 2 Oct 2026
- Open source
- The analyzer is 100% open source and part of the Clang project.clang.llvm.org · read 2 Oct 2026
- Performance limitation
- Static analysis can be much slower than compilation and some algorithms require exponential time in the worst case.clang.llvm.org · read 2 Oct 2026
- Purpose
- Clang Static Analyzer finds bugs in C, C++ and Objective-C programs.clang.llvm.org · read 2 Oct 2026
- Release verification
- LLVM says source packages and git tags are signed by release managers and provides GnuPG keys for verification.releases.llvm.org · read 2 Oct 2026
- Scope limitation
- The analyzer can only find bugs it has been specifically engineered to find.clang.llvm.org · read 2 Oct 2026
- Xcode integration
- On macOS, the easiest way to use the analyzer is to invoke it directly from Xcode.clang.llvm.org · read 2 Oct 2026
