1. Clang Static Analyzer
Doug Schuster

2. History
● Released in 2005
● Completely open source
● Extensively used by apple with LLVM (low-
level virtual machine)
● Allows for idle time analysis to help identify
possible runtime errors

3. Sustainability
● Updated quickly for XCode 5
● Updates are released every few months

4. Performance
● Runs as an add-on for xcode -> no extra
noticeable computing power required
● Results are displayed in real time as code is
created, checking syntax and common
errors

5. Pricing
● Clang is a free, open source piece of
software

6. Benefit/Cost Analysis
● Clang easily imports into Xcode, so setup
effort is minimal
● Free software = no financial cost
● Clang points out and offers suggestions to
possible problem spots and syntax errors
○ Note: clang will not find all errors and may mark
correct code as incorrect

7. Compatibility
● Clang is built for Mac OSX, but can be built
for other platforms

8. Tutorial/Training
● http://clang-analyzer.llvm.
org/checker_dev_manual.html
● http://clang-analyzer.llvm.org/faq.html
● http://stackoverflow.
com/questions/3455157/example-code-to-
trigger-clangs-static-analyser
● http://lists.cs.uiuc.edu/pipermail/cfe-
dev/2013-January/026877.html

9. Maintenance
● Clang does not update automatically
● The site recommends checking every few
weeks for a new version

10. Comparison to OCLint
Clang
● Integrates into xcode
● Based off the LLVM
compiler
● Open source
● Mac OS, but source can
be built from scratch
for other platforms
OCLint
● Stand alone analyzer
● Based off the LLVM
compiler
● Open source
● Mac and Linux OS

11. Hello World
● You must tell Xcode to use the clang analyzer
● To give it the path, use the command:
--use-checker-build
sudo checker-276/set-xcode-analyzer --use-checker-build=/tmp/checker-276
● More details on switching analyzers can be found at
http://clang-analyzer.llvm.org/xcode.html

12. Hello World Example