Failure running test/hotspot/jtreg/gc/stress/gcold/TestGCOldWithZ.java

Allocating 152 trees.
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Initialization complete...
java.lang.InternalError
at java.base/sun.invoke.util.Wrapper.forPrimitiveType(Wrapper.java:274)
at java.base/java.lang.invoke.MethodTypeForm.<init>(MethodTypeForm.java:163)
at java.base/java.lang.invoke.MethodTypeForm.findForm(MethodTypeForm.java:218)
at java.base/java.lang.invoke.MethodType.makeImpl(MethodType.java:329)
at java.base/java.lang.invoke.MethodTypeForm.canonicalize(MethodTypeForm.java:253)
at java.base/java.lang.invoke.MethodTypeForm.findForm(MethodTypeForm.java:215)
at java.base/java.lang.invoke.MethodType.makeImpl(MethodType.java:329)
at java.base/java.lang.invoke.MethodHandleNatives.findMethodHandleType(MethodHandleNatives.java:377)
at gc.stress.gcold.TestGCOld.main(TestGCOld.java:399)
at gc.stress.gcold.TestGCOldWithZ.main(TestGCOldWithZ.java:38)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:830)

JavaTest Message: Test threw exception: java.lang.InternalError
JavaTest Message: shutting down test

Looking at the code in sun.invoke.utilities.Wrapper, this exception is thrown if the type argument given to forPrimitiveType is indeed type.isPrimitiveType(), but the wrapper lookup (findPrimitiveType) failed and returned null. But that can only happen if the perfect hash lookup in findPrimitiveType missed (either no value or the wrong value).