The test runtime/CompressedOops/CompressedClassPointers.java looks for HotSpot in the output and fails when running with an OpenJDK build:

 stdout: [
heap address: 0x0000000080000000, size: 7366 MB, zero based Compressed Oops

Narrow klass base: 0x0000000000000000, Narrow klass shift: 3
Compressed class space size: 1073741824 Address: 0x000000024c600000 Req Addr: 0x000000024c600000
];
 stderr: [HeapBaseMinAddress must be at least 2147483648 (2G) which is greater than value given 1048576
java version "1.9.0-ea-fastdebug"
Java(TM) SE Runtime Environment (build 1.9.0-ea-fastdebug-b26)
OpenJDK 64-Bit Server VM (build 1.9.0-fastdebug-internal-201408142132.ctornqvi.hs-rt1, mixed mode)
]
 exitValue = 0

java.lang.RuntimeException: 'HotSpot' missing from stdout/stderr

at com.oracle.java.testlibrary.OutputAnalyzer.shouldContain(OutputAnalyzer.java:80)
at CompressedClassPointers.heapBaseMinAddressTest(CompressedClassPointers.java:91)
at CompressedClassPointers.main(CompressedClassPointers.java:146)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:484)
at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:94)
at java.lang.Thread.run(Thread.java:745)

JavaTest Message: Test threw exception: java.lang.RuntimeException: 'HotSpot' missing from stdout/stderr