NPE building Micronaut native image with Freemarker

[ilopmar]

Describe the issue

Our CI has failed with a NullPointerException when building a Micronaut native image with Freemarker.

CI logs:

• Java 8: https://gitlab.com/micronaut-projects/micronaut-graal-tests/-/jobs/1343190344
• Java 11: https://gitlab.com/micronaut-projects/micronaut-graal-tests/-/jobs/1343265283

Steps to reproduce the issue

• git clone https://github.com/micronaut-graal-tests/micronaut-views-graal
• cd micronaut-views-graal
• git checkout graalvm-npe
• Use GraalVM compiled from master branch
• ./gradlew nativeImage

Describe GraalVM and your environment:

• GraalVM version: cbc5a97
• JDK major version: 8 and 11
• OS: Linux Mint 20.1
• Architecture: AMD64

More details

[views-freemarker:34390]    classlist:   1,969.60 ms,  0.96 GB
[views-freemarker:34390]        (cap):     469.34 ms,  0.96 GB
[views-freemarker:34390]        setup:   1,945.13 ms,  0.96 GB
[views-freemarker:34390]     analysis:  24,941.47 ms,  3.86 GB
Fatal error:com.oracle.graal.pointsto.util.AnalysisError$ParsingError: Error encountered while parsing freemarker.ext.beans.ClassIntrospector.addConstructorsToClassIntrospectionData(java.util.Map, java.lang.Class, freemarker.ext.beans.ClassMemberAccessPolicy) 
Parsing context:
   at freemarker.ext.beans.ClassIntrospector.createClassIntrospectionData(ClassIntrospector.java:303)
   at freemarker.ext.beans.ClassIntrospector.get(ClassIntrospector.java:260)
   at freemarker.ext.beans.BeansWrapper.newInstance(BeansWrapper.java:1633)
   at freemarker.core._ObjectBuilderSettingEvaluator$BuilderCallExpression.callConstructor(_ObjectBuilderSettingEvaluator.java:1029)
   at freemarker.core._ObjectBuilderSettingEvaluator$BuilderCallExpression.eval(_ObjectBuilderSettingEvaluator.java:943)
   at freemarker.core._ObjectBuilderSettingEvaluator.ensureEvaled(_ObjectBuilderSettingEvaluator.java:161)
   at freemarker.core._ObjectBuilderSettingEvaluator.eval(_ObjectBuilderSettingEvaluator.java:129)
   at freemarker.core._ObjectBuilderSettingEvaluator.eval(_ObjectBuilderSettingEvaluator.java:106)
   at freemarker.template.Configuration.setSetting(Configuration.java:3434)
   at freemarker.core.Configurable.setSettings(Configurable.java:2995)
   at io.micronaut.views.freemarker.FreemarkerViewsRendererConfigurationProperties.setSettings(FreemarkerViewsRendererConfigurationProperties.java:140)
   at io.micronaut.views.freemarker.$FreemarkerViewsRendererConfigurationPropertiesDefinition.injectBean(Unknown Source)
   at io.micronaut.context.AbstractBeanDefinition.inject(AbstractBeanDefinition.java:341)
   at io.micronaut.context.DefaultBeanContext.doInject(DefaultBeanContext.java:2272)
   at io.micronaut.context.DefaultBeanContext.registerSingleton(DefaultBeanContext.java:575)
   at io.micronaut.context.DefaultApplicationContext.registerSingleton(DefaultApplicationContext.java:112)
[views-freemarker:34390]    at io.micronaut.context.ApplicationContext.registerSingleton(ApplicationContext.java:99)
     [total]:     at io.micronaut.context.ApplicationContext.registerSingleton(ApplicationContext.java:124)
29,099.70 ms,  3.86 GB
   at io.micronaut.context.DefaultApplicationContextBuilder.build(DefaultApplicationContextBuilder.java:273)
   at io.micronaut.runtime.Micronaut.start(Micronaut.java:67)
   at io.micronaut.runtime.Micronaut.run(Micronaut.java:311)
   at io.micronaut.runtime.Micronaut.run(Micronaut.java:297)
   at example.micronaut.Application.main(Application.java:8)
   at com.oracle.svm.core.JavaMainWrapper.runCore(JavaMainWrapper.java:146)
   at com.oracle.svm.core.JavaMainWrapper.run(JavaMainWrapper.java:182)
   at com.oracle.svm.core.code.IsolateEnterStub.JavaMainWrapper_run_5087f5482cc9a6abc971913ece43acb471d2631b(generated:0)

        at com.oracle.graal.pointsto.util.AnalysisError.parsingError(AnalysisError.java:126)
        at com.oracle.graal.pointsto.flow.MethodTypeFlow.createTypeFlow(MethodTypeFlow.java:311)
# Printing build artifacts to: /home/ivan/workspaces/micronaut-graal-tests/micronaut-views-graal/build/native-image/views-freemarker.build_artifacts.txt        at com.oracle.graal.pointsto.flow.MethodTypeFlow.ensureTypeFlowCreated(MethodTypeFlow.java:282)

        at com.oracle.graal.pointsto.flow.MethodTypeFlow.addContext(MethodTypeFlow.java:103)
        at com.oracle.graal.pointsto.DefaultAnalysisPolicy$DefaultSpecialInvokeTypeFlow.onObservedUpdate(DefaultAnalysisPolicy.java:363)
        at com.oracle.graal.pointsto.flow.TypeFlow.notifyObservers(TypeFlow.java:471)
        at com.oracle.graal.pointsto.flow.TypeFlow.update(TypeFlow.java:540)
        at com.oracle.graal.pointsto.BigBang$2.run(BigBang.java:539)
        at com.oracle.graal.pointsto.util.CompletionExecutor.executeCommand(CompletionExecutor.java:190)
        at com.oracle.graal.pointsto.util.CompletionExecutor.lambda$executeService$0(CompletionExecutor.java:174)
        at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426)
        at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
        at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
        at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
        at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
        at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)
Caused by: java.lang.NullPointerException
        at com.oracle.graal.pointsto.flow.MethodTypeFlowBuilder.registerUsedElements(MethodTypeFlowBuilder.java:249)
        at com.oracle.svm.hosted.analysis.flow.SVMMethodTypeFlowBuilder.registerUsedElements(SVMMethodTypeFlowBuilder.java:78)
        at com.oracle.graal.pointsto.flow.MethodTypeFlowBuilder.parse(MethodTypeFlowBuilder.java:185)
        at com.oracle.graal.pointsto.flow.MethodTypeFlowBuilder.apply(MethodTypeFlowBuilder.java:321)
        at com.oracle.graal.pointsto.flow.MethodTypeFlow.createTypeFlow(MethodTypeFlow.java:293)
        ... 14 more
Error: Image build request failed with exit status 1

[christianwimmer]

Fixed in f648801

[ilopmar]

Thanks! CI already passed tonight :-)