In src/jdk.hotspot.agent, there is a "test" directory, containing a README, a Makefile, a single java file and a handful of shell scripts. According to the README, this is a manual test of libproc.so.

The "src/$MODULE/test" construction is highly non-standard.

Compiling the java file using the Makefile fails. Without the class file, the shell scripts do not work.

I think this test has outlived itself, and can be removed without any loss. If someone think it still is useful, I strongly suggest that the compilation errors be fixed, and the test moved somewhere under the top-level "test" hierarchy.