ValueTypes: java.lang.ArrayIndexOutOfBoundsException ValueClassValidation.java

[a7ehuo]

Failed Tests:

TEST: runtime/valhalla/inlinetypes/field_layout/ValueCompositionTest.java#ValueCompositionTest_atomic_flat_and_no_nullable_flat

TEST: runtime/valhalla/inlinetypes/field_layout/ValueCompositionTest.java#ValueCompositionTest_atomic_flat_and_nullable_flat

TEST: runtime/valhalla/inlinetypes/field_layout/ValueCompositionTest.java#ValueCompositionTest_no_atomic_flat_and_no_nullable_flat

TEST: runtime/valhalla/inlinetypes/field_layout/ValueCompositionTest.java#ValueCompositionTest_no_atomic_flat_and_nullable_flat

Running them with -Xint and observed java.lang.ArrayIndexOutOfBoundsException failure

--------------------------------------------------
TEST: runtime/valhalla/inlinetypes/field_layout/ValueCompositionTest.java#ValueCompositionTest_atomic_flat_and_no_nullable_flat
TEST JDK: /root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/build/linux-x86_64-server-release/images/jdk
...
...
Command line: [/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/build/linux-x86_64-server-release/images/jdk/bin/java -cp /root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/build/run-test-prebuilt/test-support/jtreg_test_hotspot_jtreg_hotspot_valhalla/classes/2/runtime/valhalla/inlinetypes/field_layout/ValueCompositionTest_ValueCompositionTest_atomic_flat_and_no_nullable_flat.d:/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/test/hotspot/jtreg/runtime/valhalla/inlinetypes/field_layout:/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/build/run-test-prebuilt/test-support/jtreg_test_hotspot_jtreg_hotspot_valhalla/classes/2/test/lib:/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/test/lib:/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/jtreg/lib/javatest.jar:/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/jtreg/lib/jtreg.jar -XX:MaxRAMPercentage=8.33333 -Dtest.boot.jdk=/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/build/linux-x86_64-server-release/images/jdk -Djava.io.tmpdir=/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/build/run-test-prebuilt/test-support/jtreg_test_hotspot_jtreg_hotspot_valhalla/tmp --enable-preview -XX:ValueTypeFlatteningThreshold=99999 -XX:+EnableArrayFlattening -Xint -Djdk.debug=release --patch-module java.base=/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/build/linux-x86_64-server-release/jdk/lib/valueclasses/java.base-valueclasses.jar --enable-preview -Xint -XX:+UnlockDiagnosticVMOptions -XX:+PrintFieldLayout -Xshare:off -Xmx256m -XX:+AtomicFieldFlattening -XX:-NullableFieldFlattening -cp /root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/build/run-test-prebuilt/test-support/jtreg_test_hotspot_jtreg_hotspot_valhalla/classes/2/runtime/valhalla/inlinetypes/field_layout/ValueCompositionTest_ValueCompositionTest_atomic_flat_and_no_nullable_flat.d:/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/test/hotspot/jtreg/runtime/valhalla/inlinetypes/field_layout:/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/build/run-test-prebuilt/test-support/jtreg_test_hotspot_jtreg_hotspot_valhalla/classes/2/test/lib:/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/test/lib:/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/jtreg/lib/javatest.jar:/root/home/ahuo/src/openj9-openjdk-jdk.valuetypes/jtreg/lib/jtreg.jar:. ValueCompositionTest$TestRunner ]
[2025-01-21T18:11:56.729681505Z] Gathering output for process 1170568
[2025-01-21T18:11:56.786769481Z] Waiting for completion for process 1170568
[2025-01-21T18:11:57.045883013Z] Waiting for completion finished for process 1170568
Running test_4
Running test_3
Running test_2
Running test_1
Running test_0
Running test_8
Running test_7
Running test_6
Running test_5
STDERR:
java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 9
        at java.base/java.util.Arrays$ArrayList.get(Arrays.java:4263)
        at FieldLayoutAnalyzer$LogOutput.getCurrentLine(FieldLayoutAnalyzer.java:48)
        at FieldLayoutAnalyzer.generate(FieldLayoutAnalyzer.java:696)
        at FieldLayoutAnalyzer.createFieldLayoutAnalyzer(FieldLayoutAnalyzer.java:398)
        at ValueCompositionTest.main(ValueCompositionTest.java:366)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
        at java.base/java.lang.reflect.Method.invoke(Method.java:571)
        at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
        at java.base/java.lang.Thread.run(Thread.java:1458)

JavaTest Message: Test threw exception: java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 9
JavaTest Message: shutting down test

JVM version

openjdk version "25-internal" 2025-09-16
OpenJDK Runtime Environment (build 25-internal-adhoc.root.openj9-openjdk-jdk.valuetypes)
Eclipse OpenJ9 VM (build master-eb9322941f4-eb9322941, JRE 25 Linux amd64-64-Bit Compressed References 20250117_000000 (JIT enabled, AOT enabled)
OpenJ9   - eb9322941
OMR      - 2767da3a2
JCL      - c154841cc67 based on jdk-25+5)

[a7ehuo]

@hangshao0 @theresa-m @hzongaro fyi

[a7ehuo]

I also observed ClassFormatError first with TEST: runtime/valhalla/inlinetypes/classfileparser/ValueClassValidation.java itself. I'm not sure if it is related to not.

STDOUT:
Testing: InvalidClassFlags
Testing: AbstractValue
STDERR:
java.lang.RuntimeException: Unexpected ClassFormatError: JVMCFRE202E version 68.65535 of class AbstractValue is an unsupported preview major version, runtime only allows 69.65535, try re-compiling the code with the same version of the runtime; offset=6
        at ValueClassValidation.runTest(ValueClassValidation.java:47)
        at ValueClassValidation.main(ValueClassValidation.java:74)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
        at java.base/java.lang.reflect.Method.invoke(Method.java:571)
        at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
        at java.base/java.lang.Thread.run(Thread.java:1458)

[theresa-m]

I also observed ClassFormatError first with TEST: runtime/valhalla/inlinetypes/classfileparser/ValueClassValidation.java itself. I'm not sure if it is related to not.

STDOUT:
Testing: InvalidClassFlags
Testing: AbstractValue
STDERR:
java.lang.RuntimeException: Unexpected ClassFormatError: JVMCFRE202E version 68.65535 of class AbstractValue is an unsupported preview major version, runtime only allows 69.65535, try re-compiling the code with the same version of the runtime; offset=6
        at ValueClassValidation.runTest(ValueClassValidation.java:47)
        at ValueClassValidation.main(ValueClassValidation.java:74)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
        at java.base/java.lang.reflect.Method.invoke(Method.java:571)
        at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
        at java.base/java.lang.Thread.run(Thread.java:1458)

The major version for value type classes was increased from 68 to 69 recently #20911. This error is likely related to that.