Bug ID: JDK-8209736 runtime/RedefineTests/ModifyAnonymous.java fails with NullPointerException when running in CDS mode

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JDK 11	JDK 12
11.0.17-oracleFixed	12 b10Fixed

The runtime/RedefineTests/ModifyAnonymous.java fails with NullPointerException when running on a JDK binary with an existing CDS binary:

java.lang.NullPointerException
	at ModifyAnonymous.runTest(ModifyAnonymous.java:113)
	at ModifyAnonymous$1.run(ModifyAnonymous.java:156)
STATUS:Failed.`main' threw exception: java.lang.NullPointerException

Fix request [11u] I backport this for parity with 11.0.17-oracle. No risk, only a test change. Clean backport. Test passes. SAP nightly testing passed.
10-06-2022
A pull request was submitted for review. URL: https://git.openjdk.java.net/jdk11u-dev/pull/1134 Date: 2022-06-09 10:38:04 +0000
09-06-2022
Git URL: https://github.com/openjdk/jdk/commit/3c810ce261980692877a0b043bc67a910902bd26
09-06-2022
URL: http://hg.openjdk.java.net/jdk/jdk/rev/ab722555e66d User: ccheung Date: 2018-09-04 22:00:32 +0000
04-09-2018
Unable to reproduce the problem locally on linux so far. java.lang.NullPointerException at ModifyAnonymous.runTest(ModifyAnonymous.java:113) is the following line: static void runTest() { while (!done) { Class[] allLoadedClasses = inst.getAllLoadedClasses(); for (Class clazz : allLoadedClasses) { final String name = clazz.getName(); <<<--- line 113 This means a null clazz. From the log: ----------System.out:(2/25)---------- javaagent in da house! . This indicates the InstanceMethodCallSiteApp.doWork thread didn't run for too long. The output for a successful run should look like: ----------System.out:(6/511)---------- javaagent in da house! .....retransform called for ModifyAnonymous$InstanceMethodCallSiteApp$$Lambda$17/0x0000000840066840 PASSED: expecting UnmodifiableClassException redefine called for ModifyAnonymous$InstanceMethodCallSiteApp$$Lambda$17/0x0000000840066840 .....................................................................................................................................................................PASSED: expecting UnmodifiableClassException PASSED: NoClassDefFound error not thrown
24-08-2018

Blocks :	JDK-8202951 - Implementation of JEPJDK-8204247: Include default CDS (Class Data Sharing) archive in JDK binary
Duplicate :	JDK-8210926 - vmTestbase/nsk/jvmti/scenarios/allocation/AP11/ap11t001/TestDescription.java failed with JVMTI_ERROR_INVALID_CLASS in CDS mode
Relates :	JDK-8202951 - Implementation of JEPJDK-8204247: Include default CDS (Class Data Sharing) archive in JDK binary
Relates :	JDK-8210926 - vmTestbase/nsk/jvmti/scenarios/allocation/AP11/ap11t001/TestDescription.java failed with JVMTI_ERROR_INVALID_CLASS in CDS mode