JTReg Test Failure: java/lang/Enum/ConstantDirectoryOptimalCapacity.java

[M-Davies]

Failure link

https://github.com/ibmruntimes/openj9-openjdk-jdk11/blob/b44d19c4cbca42541aef5132f21870c1b924a68c/test/jdk/java/lang/Enum/ConstantDirectoryOptimalCapacity.java

Consistent Failure on JDK11-openj9 for x86_linux, windows and osx (test passes on hotspot). Failure is due to a NoSuchFieldException when searching for a fieldname within a class

Optional info

Test fails in https://github.com/ibmruntimes/openj9-openjdk-jdk11/blob/openj9/test/jdk/lib/testlibrary/jdk/testlibrary/OptimalCapacity.java#L130 after the field is returned as null.

When looking up fieldname using lookupCachedField, the response is null. Perhaps enumConstantDirectory is not in the ReflectCache at the time of execution? Potentially unsuitable for OpenJ9?

Failure output

ConstantDirectoryOptimalCapacity
16:08:21  STDERR:
16:08:21  java.lang.RuntimeException: java.lang.NoSuchFieldException: enumConstantDirectory
16:08:21  	at jdk.testlibrary.OptimalCapacity.ofHashMap(OptimalCapacity.java:158)
16:08:21  	at ConstantDirectoryOptimalCapacity.test(ConstantDirectoryOptimalCapacity.java:72)
16:08:21  	at ConstantDirectoryOptimalCapacity.main(ConstantDirectoryOptimalCapacity.java:40)
16:08:21  	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
16:08:21  	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
16:08:21  	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
16:08:21  	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
16:08:21  	at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298)
16:08:21  	at java.base/java.lang.Thread.run(Thread.java:831)
16:08:21  Caused by: java.lang.NoSuchFieldException: enumConstantDirectory
16:08:21  	at java.base/java.lang.Class.getDeclaredField(Class.java:896)
16:08:21  	at jdk.testlibrary.OptimalCapacity.ofHashMap(OptimalCapacity.java:130)
16:08:21  	... 8 more
16:08:21  
16:08:21  JavaTest Message: Test threw exception: java.lang.RuntimeException
16:08:21  JavaTest Message: shutting down test
16:08:21  
16:08:21  
16:08:21  TEST RESULT: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: java.lang.NoSuchFieldException: enumConstantDirectory

[M-Davies]

^^ added test title

[M-Davies]

Potentially unsuitable for OpenJ9?

@pdbain-ibm would you agree?

[pshipton]

OpenJ9 doesn't have a field called enumConstantDirectory, the implementation is different.

[M-Davies]

That was my thought too. I could only find reference to a Map property of Class.java
https://github.com/eclipse/openj9/blob/af939eef6337d1c420bf558735f67939ccb87854/jcl/src/java.base/share/classes/java/lang/Class.java#L3087

[M-Davies]

@pshipton https://github.com/ibmruntimes/openj9-openjdk-jdk11/blob/8bf2a8166185765e9c6ddbffb66d1adbee67fd16/test/jdk/java/lang/invoke/VarHandle/AccessMode/OptimalMapSize.java#L1 fails with a similar error. Will perm exclude this one too

09:38:06  STDERR:
09:38:06  java.lang.RuntimeException: java.lang.NoSuchFieldException: methodNameToAccessMode
09:38:06  	at jdk.test.lib.util.OptimalCapacity.ofHashMap(OptimalCapacity.java:158)
09:38:06  	at jdk.test.lib.util.OptimalCapacity.ofHashMap(OptimalCapacity.java:105)
09:38:06  	at OptimalMapSize.main(OptimalMapSize.java:41)
09:38:06  	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
09:38:06  	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
09:38:06  	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
09:38:06  	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
09:38:06  	at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298)
09:38:06  	at java.base/java.lang.Thread.run(Thread.java:831)