Hi Frank, Do you know what I am missing? ./stap -p4 testsuite/buildok/three.stp semantic error: unresolved function call: identifier 'log' at testsuite/buildok/three.stp:22:3 semantic error: unresolved function call: identifier 'log' at testsuite/buildok/three.stp:22:3 Pass 2: analysis failed. Try again with '-v' (verbose) option. I am running the latest CVS build. Thanks, Hien.