MappedByteBufferReplacement substitutions is obsolete in JDK16

[cstancu]

Describe the bug

Trying to build a simple Quarkus Native Image application with a JDK16 based GraalVM results in

Error: Could not find target method: private void io.quarkus.runtime.graal.MappedByteBufferReplacement.force0(java.io.FileDescriptor,long,long)
com.oracle.svm.core.util.UserError$UserException: Could not find target method: private void io.quarkus.runtime.graal.MappedByteBufferReplacement.force0(java.io.FileDescriptor,long,long)
	at com.oracle.svm.core.util.UserError.abort(UserError.java:68)
	at com.oracle.svm.hosted.substitute.AnnotationSubstitutionProcessor.findOriginalMethod(AnnotationSubstitutionProcessor.java:734)
	at com.oracle.svm.hosted.substitute.AnnotationSubstitutionProcessor.handleMethodInAliasClass(AnnotationSubstitutionProcessor.java:366)
	at com.oracle.svm.hosted.substitute.AnnotationSubstitutionProcessor.handleAliasClass(AnnotationSubstitutionProcessor.java:338)
	at com.oracle.svm.hosted.substitute.AnnotationSubstitutionProcessor.handleClass(AnnotationSubstitutionProcessor.java:310)
	at com.oracle.svm.hosted.substitute.AnnotationSubstitutionProcessor.init(AnnotationSubstitutionProcessor.java:266)
	at com.oracle.svm.hosted.NativeImageGenerator.createDeclarativeSubstitutionProcessor(NativeImageGenerator.java:952)
	at com.oracle.svm.hosted.NativeImageGenerator.setupNativeImage(NativeImageGenerator.java:886)
	at com.oracle.svm.hosted.NativeImageGenerator.doRun(NativeImageGenerator.java:578)
	at com.oracle.svm.hosted.NativeImageGenerator.lambda$run$2(NativeImageGenerator.java:493)
	at java.base/java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1414)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:295)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1016)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1665)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1598)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)

The target method MappedByteBuffer.force0 has been removed in JDK16.

Note: A JDK16 GraalVM is not widely available yet, it must be built from source.

[gsmet]

Thanks for the report @cstancu !

[anthonyikeda]

The JDK16 GraalVM is now available. How do I make the native image? I still get the same error using GraalVM:

$ java -version
openjdk version "16.0.2" 2021-07-20
OpenJDK Runtime Environment GraalVM CE 21.2.0 (build 16.0.2+7-jvmci-21.2-b08)
OpenJDK 64-Bit Server VM GraalVM CE 21.2.0 (build 16.0.2+7-jvmci-21.2-b08, mixed mode, sharing)