Running clang's scan-build on OpenJDK (Ubuntu 18.04)

Prerequisites

We will start with a working OpenJDK build, i.e. a situation where running

bash configure

followed by

make images

produces a working build.

Install clang tools

Latest version available at the time of writing was 10:

sudo apt install clang-tools-10

Reconfigure

Run configure via scan-build

scan-build-10 bash configure

Optionally add --enable-debug, it can reduce the number of false positives.

Scan

scan-build-10 -o scan make

Found problems are reported on console in text format and stored in a subdirectory of "scan" directory in HTML format.

Sample results

You can check example output of the scan here

Source

https://clang-analyzer.llvm.org/scan-build.html