Nightly test failed:

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  Internal Error (/opt/jprt/T/P1/074350.zmajo/s/hotspot/src/share/vm/oops/klass.inline.hpp:63), pid=23636, tid=0x0000007e711ff1f0
#  assert(!is_null(v)) failed: narrow klass value can never be zero
#
# JRE version: Java(TM) SE Runtime Environment (9.0) (build 1.9.0-internal-fastdebug-20150703074350.zmajo.8130120-tocommit-b00)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.9.0-internal-fastdebug-20150703074350.zmajo.8130120-tocommit-b00 compiled mode linux-aarch64 compressed oops)
# Core dump will be written. Default location: Core dumps may be processed with "/usr/share/apport/apport %p %s %c %P" (or dumping to /export/local/aurora/sandbox/results/ResultDir/jck60004_copy_1/core.23636)
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#