The following tests are currently failing in jdk9/dev with a NCDFE:

compiler/jsr292/RedefineMethodUsedByMultipleMethodHandles.java
compiler/jvmci/jdk.vm.ci.runtime.test/src/jdk/vm/ci/runtime/test/RedefineClassTest.java

Both tests use ToolProvider.getSystemClassLoader() which has been changed via JDK-8155765 to return null.