[java] Intermittent NPEs while analyzing Java code #4757

adangel · 2023-12-01T10:35:51Z

Affects PMD Version: 7.0.0-SNAPSHOT

Description:

Sometimes, not always, a NullPointerException occurs. I've noticed two different stacktraces.

Exception Stacktrace 1a

    org.apache.commons.lang3.exception.ContextedRuntimeException: java.lang.NullPointerException: Cannot invoke "net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub$EnclosingInfo.getEnclosingClass()" because "this.enclosingInfo" is null
Exception Context:
        [1:Rule applied on node=!debug only! [MethodCall:43:9]System.out.println("This is just a test.")]
---------------------------------
        at net.sourceforge.pmd.util.AssertionUtil.contexted(AssertionUtil.java:232)
        at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.applyOnIndex(RuleApplicator.java:77)
        at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.apply(RuleApplicator.java:55)
        at net.sourceforge.pmd.RuleSets.apply(RuleSets.java:158)
        at net.sourceforge.pmd.lang.impl.PmdRunnable.processSource(PmdRunnable.java:140)
        at net.sourceforge.pmd.lang.impl.PmdRunnable.run(PmdRunnable.java:80)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.NullPointerException: Cannot invoke "net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub$EnclosingInfo.getEnclosingClass()" because "this.enclosingInfo" is null
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub.getEnclosingClass(ClassStub.java:355)
        at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.makeEnclosingOf(ClassTypeImpl.java:117)
        at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.(ClassTypeImpl.java:77)
        at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.(ClassTypeImpl.java:64)
        at net.sourceforge.pmd.lang.java.types.TypeSystem.typeOf(TypeSystem.java:458)
        at net.sourceforge.pmd.lang.java.types.TypeSystem.rawType(TypeSystem.java:485)
        at net.sourceforge.pmd.lang.java.types.TypesFromReflection.fromReflect(TypesFromReflection.java:99)
        at net.sourceforge.pmd.lang.java.types.TypesFromReflection.fromReflect(TypesFromReflection.java:69)
        at net.sourceforge.pmd.lang.java.types.TypeTestUtil.isA(TypeTestUtil.java:87)
        at net.sourceforge.pmd.lang.java.types.TypeTestUtil.isA(TypeTestUtil.java:65)
        at net.sourceforge.pmd.lang.java.rule.errorprone.UselessOperationOnImmutableRule.visit(UselessOperationOnImmutableRule.java:38)
        at net.sourceforge.pmd.lang.java.ast.ASTMethodCall.acceptVisitor(ASTMethodCall.java:75)
        at net.sourceforge.pmd.lang.java.ast.AbstractJavaNode.acceptVisitor(AbstractJavaNode.java:38)
        at net.sourceforge.pmd.lang.java.rule.AbstractJavaRule.apply(AbstractJavaRule.java:24)
        at net.sourceforge.pmd.lang.rule.AbstractDelegateRule.apply(AbstractDelegateRule.java:238)
        at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.applyOnIndex(RuleApplicator.java:75)
        ... 9 more
[ERROR] Tests run: 6, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 8.099 s <<< FAILURE! - in org.apache.maven.plugins.pmd.PmdViolationCheckMojoTest

Exception Stacktrace 1b

2023-11-27T15:11:35.3546412Z [INFO] --- pmd:3.21.2:pmd (pmd) @ pmd-jsp ---
2023-11-27T15:11:35.3625221Z [INFO] PMD version: 7.0.0-rc4
2023-11-27T15:11:36.5540446Z [WARNING] Exception applying rule UseUtilityClass on file D:\a\pmd\pmd\pmd-jsp\src\main\java\net\sourceforge\pmd\lang\jsp\ast\ASTAttribute.java, continuing with next rule
2023-11-27T15:11:36.5776585Z org.apache.commons.lang3.exception.ContextedRuntimeException: java.lang.NullPointerException
2023-11-27T15:11:36.5777784Z Exception Context:
2023-11-27T15:11:36.5778949Z 	[1:Rule applied on node=!debug only! [ClassOrInterfaceDeclaration:7:14]public final class ASTAttribute extends AbstractJspNode {
2023-11-27T15:11:36.5780037Z 
2023-11-27T15:11:36.5780213Z     private String name;
2023-11-27T15:11:36.5780788Z 
2023-11-27T15:11:36.5780963Z     ASTAttribute(int id) {
2023-11-27T15:11:36.5781442Z         super(id);
2023-11-27T15:11:36.5781828Z     }
2023-11-27T15:11:36.5782017Z 
2023-11-27T15:11:36.5782154Z  (truncated)]
2023-11-27T15:11:36.5783525Z ---------------------------------
2023-11-27T15:11:36.5784486Z     at net.sourceforge.pmd.util.AssertionUtil.contexted (AssertionUtil.java:232)
2023-11-27T15:11:36.5785967Z     at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.applyOnIndex (RuleApplicator.java:77)
2023-11-27T15:11:36.5787577Z     at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.apply (RuleApplicator.java:55)
2023-11-27T15:11:36.5788879Z     at net.sourceforge.pmd.RuleSets.apply (RuleSets.java:158)
2023-11-27T15:11:36.5790060Z     at net.sourceforge.pmd.lang.impl.PmdRunnable.processSource (PmdRunnable.java:140)
2023-11-27T15:11:36.5791352Z     at net.sourceforge.pmd.lang.impl.PmdRunnable.run (PmdRunnable.java:80)
2023-11-27T15:11:36.5792535Z     at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:515)
2023-11-27T15:11:36.5793613Z     at java.util.concurrent.FutureTask.run (FutureTask.java:264)
2023-11-27T15:11:36.5794798Z     at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1128)
2023-11-27T15:11:36.5796168Z     at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:628)
2023-11-27T15:11:36.5797162Z     at java.lang.Thread.run (Thread.java:829)
2023-11-27T15:11:36.5797848Z Caused by: java.lang.NullPointerException
2023-11-27T15:11:36.5799445Z     at net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub.getEnclosingClass (ClassStub.java:355)
2023-11-27T15:11:36.5800489Z     at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.makeEnclosingOf (ClassTypeImpl.java:117)
2023-11-27T15:11:36.5801404Z     at net.sourceforge.pmd.lang.java.types.ClassTypeImpl. (ClassTypeImpl.java:77)
2023-11-27T15:11:36.5802549Z     at net.sourceforge.pmd.lang.java.types.ClassTypeImpl. (ClassTypeImpl.java:64)
2023-11-27T15:11:36.5803310Z     at net.sourceforge.pmd.lang.java.types.TypeSystem.typeOf (TypeSystem.java:458)
2023-11-27T15:11:36.5804055Z     at net.sourceforge.pmd.lang.java.types.TypeSystem.rawType (TypeSystem.java:485)
2023-11-27T15:11:36.5804974Z     at net.sourceforge.pmd.lang.java.types.TypesFromReflection.loadClassMaybeArray (TypesFromReflection.java:237)
2023-11-27T15:11:36.5805975Z     at net.sourceforge.pmd.lang.java.types.TypesFromReflection.loadType (TypesFromReflection.java:205)
2023-11-27T15:11:36.5806820Z     at net.sourceforge.pmd.lang.java.types.TypeTestUtil.isA (TypeTestUtil.java:176)
2023-11-27T15:11:36.5807561Z     at net.sourceforge.pmd.lang.java.types.TypeTestUtil.isA (TypeTestUtil.java:122)
2023-11-27T15:11:36.5808600Z     at net.sourceforge.pmd.lang.java.rule.design.UseUtilityClassRule.visit (UseUtilityClassRule.java:39)
2023-11-27T15:11:36.5809708Z     at net.sourceforge.pmd.lang.java.ast.ASTClassOrInterfaceDeclaration.acceptVisitor (ASTClassOrInterfaceDeclaration.java:38)
2023-11-27T15:11:36.5810772Z     at net.sourceforge.pmd.lang.java.ast.AbstractJavaNode.acceptVisitor (AbstractJavaNode.java:38)
2023-11-27T15:11:36.5811635Z     at net.sourceforge.pmd.lang.java.rule.AbstractJavaRule.apply (AbstractJavaRule.java:24)
2023-11-27T15:11:36.5812482Z     at net.sourceforge.pmd.lang.rule.AbstractDelegateRule.apply (AbstractDelegateRule.java:232)
2023-11-27T15:11:36.5813381Z     at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.applyOnIndex (RuleApplicator.java:75)
2023-11-27T15:11:36.5814254Z     at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.apply (RuleApplicator.java:55)
2023-11-27T15:11:36.5814930Z     at net.sourceforge.pmd.RuleSets.apply (RuleSets.java:158)
2023-11-27T15:11:36.5815566Z     at net.sourceforge.pmd.lang.impl.PmdRunnable.processSource (PmdRunnable.java:140)
2023-11-27T15:11:36.5816269Z     at net.sourceforge.pmd.lang.impl.PmdRunnable.run (PmdRunnable.java:80)
2023-11-27T15:11:36.5817203Z     at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:515)
2023-11-27T15:11:36.5817836Z     at java.util.concurrent.FutureTask.run (FutureTask.java:264)
2023-11-27T15:11:36.5818495Z     at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1128)
2023-11-27T15:11:36.5819502Z     at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:628)
2023-11-27T15:11:36.5820175Z     at java.lang.Thread.run (Thread.java:829)
2023-11-27T15:11:36.5821398Z [WARNING] Exception occurred on node !debug only! [ClassOrInterfaceDeclaration:7:14]public final class ASTAttribute extends AbstractJspNode {
2023-11-27T15:11:36.5822477Z 
2023-11-27T15:11:36.5822641Z     private String name;
2023-11-27T15:11:36.5822931Z 
2023-11-27T15:11:36.5823100Z     ASTAttribute(int id) {
2023-11-27T15:11:36.5823519Z         super(id);
2023-11-27T15:11:36.5823869Z     }
2023-11-27T15:11:36.5824050Z 
2023-11-27T15:11:36.5824182Z  (truncated)

Exception Stacktrace 2

[PmdThread 2] ERROR net.sourceforge.pmd.lang.java.symbols.internal.asm.ParseLock - java.lang.NullPointerException
java.lang.NullPointerException
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub.getEnclosingTypeParameterOwner(ClassStub.java:373)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.GenericSigBase.getEnclosingTypeParams(GenericSigBase.java:71)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.SignatureParser.typeParamsWrapper(SignatureParser.java:88)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.SignatureParser.parseClassSignature(SignatureParser.java:56)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.GenericSigBase$LazyClassSignature.doParse(GenericSigBase.java:155)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.GenericSigBase$1.doParse(GenericSigBase.java:54)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.ParseLock.getFinalStatus(ParseLock.java:33)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.ParseLock.ensureParsed(ParseLock.java:22)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.GenericSigBase.ensureParsed(GenericSigBase.java:76)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.GenericSigBase.getTypeParams(GenericSigBase.java:92)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub.getTypeParameters(ClassStub.java:289)
        at net.sourceforge.pmd.lang.java.symbols.JTypeParameterOwnerSymbol.getTypeParameterCount(JTypeParameterOwnerSymbol.java:47)
        at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.typeArgsAreOk(ClassTypeImpl.java:446)
        at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.validateParams(ClassTypeImpl.java:420)
        at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.(ClassTypeImpl.java:69)
        at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.(ClassTypeImpl.java:64)
        at net.sourceforge.pmd.lang.java.types.TypeSystem.parameterise(TypeSystem.java:522)
        at net.sourceforge.pmd.lang.java.types.ast.LazyTypeResolver.visit(LazyTypeResolver.java:472)
        at net.sourceforge.pmd.lang.java.types.ast.LazyTypeResolver.visit(LazyTypeResolver.java:95)
        at net.sourceforge.pmd.lang.java.ast.ASTClassLiteral.acceptVisitor(ASTClassLiteral.java:26)
        at net.sourceforge.pmd.lang.java.ast.AbstractJavaTypeNode.getTypeMirror(AbstractJavaTypeNode.java:51)
        at net.sourceforge.pmd.lang.java.ast.ASTClassLiteral.getTypeMirror(ASTClassLiteral.java:19)
        at net.sourceforge.pmd.lang.java.ast.AbstractJavaTypeNode.getTypeMirror(AbstractJavaTypeNode.java:39)
        at net.sourceforge.pmd.lang.java.ast.ASTClassLiteral.getTypeMirror(ASTClassLiteral.java:19)
        at net.sourceforge.pmd.lang.java.ast.InternalApiBridge.lambda$forceTypeResolutionPhase$0(InternalApiBridge.java:94)
        at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
        at net.sourceforge.pmd.lang.ast.internal.IteratorBasedNStream.forEach(IteratorBasedNStream.java:102)
        at net.sourceforge.pmd.lang.java.ast.InternalApiBridge.forceTypeResolutionPhase(InternalApiBridge.java:92)
        at net.sourceforge.pmd.lang.java.internal.JavaAstProcessor.lambda$process$3(JavaAstProcessor.java:134)
        at net.sourceforge.pmd.benchmark.TimeTracker.bench(TimeTracker.java:163)
        at net.sourceforge.pmd.lang.java.internal.JavaAstProcessor.process(JavaAstProcessor.java:134)
        at net.sourceforge.pmd.lang.java.internal.JavaAstProcessor.process(JavaAstProcessor.java:164)
        at net.sourceforge.pmd.lang.java.internal.JavaAstProcessor.process(JavaAstProcessor.java:148)
        at net.sourceforge.pmd.lang.java.ast.JavaParser.parseImpl(JavaParser.java:69)
        at net.sourceforge.pmd.lang.java.ast.JavaParser.parseImpl(JavaParser.java:25)
        at net.sourceforge.pmd.lang.ast.impl.javacc.JjtreeParserAdapter.parse(JjtreeParserAdapter.java:36)
        at net.sourceforge.pmd.lang.impl.PmdRunnable.parse(PmdRunnable.java:112)
        at net.sourceforge.pmd.lang.impl.PmdRunnable.processSource(PmdRunnable.java:132)
        at net.sourceforge.pmd.lang.impl.PmdRunnable.run(PmdRunnable.java:80)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)
[PmdThread 2] WARN net.sourceforge.pmd.lang.rule.internal.RuleApplicator - Exception applying rule JUnitAssertionsShouldIncludeMessage on file /home/runner/work/pmd/target/repositories/spring-framework/integrati
on-tests/src/test/java/org/springframework/aop/framework/autoproxy/AdvisorAutoProxyCreatorIntegrationTests.java, continuing with next rule
org.apache.commons.lang3.exception.ContextedRuntimeException: java.lang.NullPointerException
Exception Context:
        [1:Resolving type of=!debug only! [MethodCall:55:42]CLASS.getSimpleName()]
        [2:Rule applied on node=!debug only! [MethodCall:55:42]CLASS.getSimpleName()]
---------------------------------
        at net.sourceforge.pmd.util.AssertionUtil.contexted(AssertionUtil.java:232)
        at net.sourceforge.pmd.lang.java.ast.AbstractJavaTypeNode.getTypeMirror(AbstractJavaTypeNode.java:54)
        at net.sourceforge.pmd.lang.java.ast.ASTMethodCall.getTypeMirror(ASTMethodCall.java:22)
        at net.sourceforge.pmd.lang.java.ast.AbstractJavaTypeNode.getTypeMirror(AbstractJavaTypeNode.java:39)
        at net.sourceforge.pmd.lang.java.ast.ASTMethodCall.getTypeMirror(ASTMethodCall.java:22)
        at net.sourceforge.pmd.lang.java.ast.AbstractJavaTypeNode.forceTypeResolution(AbstractJavaTypeNode.java:29)
        at net.sourceforge.pmd.lang.java.ast.AbstractInvocationExpr.getOverloadSelectionInfo(AbstractInvocationExpr.java:27)
        at net.sourceforge.pmd.lang.java.ast.ASTMethodCall.getOverloadSelectionInfo(ASTMethodCall.java:22)
        at net.sourceforge.pmd.lang.java.ast.InvocationNode.getMethodType(InvocationNode.java:48)
        at net.sourceforge.pmd.lang.java.rule.internal.TestFrameworksUtil.isCallOnAssertionContainer(TestFrameworksUtil.java:166)
        at net.sourceforge.pmd.lang.java.rule.bestpractices.JUnitAssertionsShouldIncludeMessageRule.visit(JUnitAssertionsShouldIncludeMessageRule.java:37)
        at net.sourceforge.pmd.lang.java.ast.ASTMethodCall.acceptVisitor(ASTMethodCall.java:75)
        at net.sourceforge.pmd.lang.java.ast.AbstractJavaNode.acceptVisitor(AbstractJavaNode.java:38)
        at net.sourceforge.pmd.lang.java.rule.AbstractJavaRule.apply(AbstractJavaRule.java:24)
        at net.sourceforge.pmd.lang.rule.AbstractDelegateRule.apply(AbstractDelegateRule.java:232)
        at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.applyOnIndex(RuleApplicator.java:75)
        at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.apply(RuleApplicator.java:55)
        at net.sourceforge.pmd.RuleSets.apply(RuleSets.java:158)
        at net.sourceforge.pmd.lang.impl.PmdRunnable.processSource(PmdRunnable.java:140)
        at net.sourceforge.pmd.lang.impl.PmdRunnable.run(PmdRunnable.java:80)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.NullPointerException
        at net.sourceforge.pmd.lang.java.types.TypeOps.mapPreservingSelf(TypeOps.java:951)
        at net.sourceforge.pmd.lang.java.types.TypeOps.substClasses(TypeOps.java:933)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.GenericSigBase$LazyClassSignature.getSuperItfs(GenericSigBase.java:186)
        at net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub.getSuperInterfaceTypes(ClassStub.java:283)
        at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.getSuperInterfaces(ClassTypeImpl.java:302)
        at net.sourceforge.pmd.lang.java.symbols.table.internal.SuperTypesEnumerator$SuperTypeWalker.enqueue(SuperTypesEnumerator.java:153)
        at net.sourceforge.pmd.lang.java.symbols.table.internal.SuperTypesEnumerator$SuperTypeWalker.computeNext(SuperTypesEnumerator.java:144)
        at net.sourceforge.pmd.util.IteratorUtil$AbstractIterator.hasNext(IteratorUtil.java:529)
        at java.base/java.util.Iterator.forEachRemaining(Iterator.java:132)
        at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
        at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
        at net.sourceforge.pmd.lang.java.types.TypeOps.getMethodsOf(TypeOps.java:1879)
        at net.sourceforge.pmd.lang.java.types.internal.infer.ast.MethodInvocMirror.getAccessibleCandidates(MethodInvocMirror.java:71)
        at net.sourceforge.pmd.lang.java.types.internal.infer.ast.MethodInvocMirror.getAccessibleCandidates(MethodInvocMirror.java:26)
        at net.sourceforge.pmd.lang.java.types.internal.infer.Infer.computeCompileTimeDecl(Infer.java:271)
        at net.sourceforge.pmd.lang.java.types.internal.infer.Infer.getCompileTimeDecl(Infer.java:249)
        at net.sourceforge.pmd.lang.java.types.internal.infer.Infer.goToInvocationWithFallback(Infer.java:182)
        at net.sourceforge.pmd.lang.java.types.internal.infer.Infer.inferInvocationRecursively(Infer.java:171)
        at net.sourceforge.pmd.lang.java.types.ast.PolyResolution.inferInvocation(PolyResolution.java:251)
        at net.sourceforge.pmd.lang.java.types.ast.PolyResolution.polyTypeOtherCtx(PolyResolution.java:123)
        at net.sourceforge.pmd.lang.java.types.ast.PolyResolution.computePolyType(PolyResolution.java:113)
        at net.sourceforge.pmd.lang.java.types.ast.LazyTypeResolver.handlePoly(LazyTypeResolver.java:268)
        at net.sourceforge.pmd.lang.java.types.ast.LazyTypeResolver.visit(LazyTypeResolver.java:273)
        at net.sourceforge.pmd.lang.java.types.ast.LazyTypeResolver.visit(LazyTypeResolver.java:95)
        at net.sourceforge.pmd.lang.java.ast.ASTMethodCall.acceptVisitor(ASTMethodCall.java:75)
        at net.sourceforge.pmd.lang.java.ast.AbstractJavaTypeNode.getTypeMirror(AbstractJavaTypeNode.java:51)
        ... 23 more
[PmdThread 2] WARN net.sourceforge.pmd.lang.rule.internal.RuleApplicator - Exception occurred on node !debug only! [MethodCall:55:42]CLASS.getSimpleName()

Code Sample demonstrating the issue:

Don't know exactly.

Stacktrace 1a appeared when building maven-pmd-plugin against PMD 7 (there are some unit tests which execute PMD)

Stacktrace 1b appeared when running PMD against pmd code base (in PR #4754)

Stacktrace 2 appeared when running the regression tester against the spring framework.

Running PMD through: CLI, Maven

adangel · 2023-12-01T10:37:27Z

One note to Stacktrace 2: Is it maybe a circular initialization problem? ClassStub::getTypeParameters -> ParseLock::ensureParsed -> ClassStub::getEnclosingTypeParameterOwner -> ParseLock::ensureParsed

emouty · 2024-02-09T13:55:43Z

Hello,

I also occasionally get Stacktrace 1a. I have notice that after this Stacktrace appear I get a lot of NPE on TypeOps.

I running analysis with maven-pmd-plugin with pmd 7 and pmd-compat6 module

example on NPE on TypeOps

  [WARNING] Exception applying rule AvoidCalendarDateCreation on file /home/jenkins/agent/workspace/MyProject_PR-3995@tmp/codeAnalysis.tmp5736574437765240806/src/main/java/com/myproject/MyClass.java, continuing with next rule
  org.apache.commons.lang3.exception.ContextedRuntimeException: java.lang.NullPointerException: Cannot invoke "java.util.List.size()" because "ts" is null
  Exception Context:
  	[1:Rule applied on node=!debug only! [ClassOrInterfaceType:71:59]MyScope]
  ---------------------------------
      at net.sourceforge.pmd.util.AssertionUtil.contexted (AssertionUtil.java:232)
      at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.applyOnIndex (RuleApplicator.java:77)
      at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.apply (RuleApplicator.java:55)
      at net.sourceforge.pmd.RuleSets.apply (RuleSets.java:158)
      at net.sourceforge.pmd.lang.impl.PmdRunnable.processSource (PmdRunnable.java:140)
      at net.sourceforge.pmd.lang.impl.PmdRunnable.run (PmdRunnable.java:80)
      at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:572)
      at java.util.concurrent.FutureTask.run (FutureTask.java:317)
      at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1144)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:642)
      at java.lang.Thread.run (Thread.java:1583)
  Caused by: java.lang.NullPointerException: Cannot invoke "java.util.List.size()" because "ts" is null
      at net.sourceforge.pmd.lang.java.types.TypeOps.mapPreservingSelf (TypeOps.java:951)
      at net.sourceforge.pmd.lang.java.types.TypeOps.substClasses (TypeOps.java:933)
      at net.sourceforge.pmd.lang.java.symbols.internal.asm.GenericSigBase$LazyClassSignature.getSuperItfs (GenericSigBase.java:186)
      at net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub.getSuperInterfaceTypes (ClassStub.java:283)
      at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.getSuperInterfaces (ClassTypeImpl.java:302)
      at net.sourceforge.pmd.lang.java.types.TypeOps$AsSuperVisitor.visitClass (TypeOps.java:1678)
      at net.sourceforge.pmd.lang.java.types.TypeOps$AsSuperVisitor.visitClass (TypeOps.java:1653)
      at net.sourceforge.pmd.lang.java.types.JClassType.acceptVisitor (JClassType.java:310)
      at net.sourceforge.pmd.lang.java.types.TypeOps$AsSuperVisitor.visitClass (TypeOps.java:1672)
      at net.sourceforge.pmd.lang.java.types.TypeOps$AsSuperVisitor.visitClass (TypeOps.java:1653)
      at net.sourceforge.pmd.lang.java.types.JClassType.acceptVisitor (JClassType.java:310)
      at net.sourceforge.pmd.lang.java.types.TypeOps.asSuper (TypeOps.java:1630)
      at net.sourceforge.pmd.lang.java.types.JTypeMirror.getAsSuper (JTypeMirror.java:232)
      at net.sourceforge.pmd.lang.java.types.JClassType.getAsSuper (JClassType.java:243)
      at net.sourceforge.pmd.lang.java.types.TypeOps$SubtypeVisitor.visitClass (TypeOps.java:830)
      at net.sourceforge.pmd.lang.java.types.TypeOps$SubtypeVisitor.visitClass (TypeOps.java:771)
      at net.sourceforge.pmd.lang.java.types.JClassType.acceptVisitor (JClassType.java:310)
      at net.sourceforge.pmd.lang.java.types.TypeOps.isConvertible (TypeOps.java:464)
      at net.sourceforge.pmd.lang.java.types.TypeOps.isConvertible (TypeOps.java:401)
      at net.sourceforge.pmd.lang.java.types.JTypeMirror.isConvertibleTo (JTypeMirror.java:127)
      at net.sourceforge.pmd.lang.java.types.JTypeMirror.isSubtypeOf (JTypeMirror.java:115)
      at net.sourceforge.pmd.lang.java.types.TypeTestUtil.isA (TypeTestUtil.java:158)
      at net.sourceforge.pmd.lang.java.types.TypeTestUtil.isA (TypeTestUtil.java:178)
      at net.sourceforge.pmd.lang.java.types.TypeTestUtil.isA (TypeTestUtil.java:122)
      at net.sourceforge.pmd.lang.java.rule.xpath.internal.BaseContextNodeTestFun$1.call (BaseContextNodeTestFun.java:71)
      at net.sf.saxon.lib.ExtensionFunctionCall.effectiveBooleanValue (ExtensionFunctionCall.java:187)
      at net.sf.saxon.functions.IntegratedFunctionCall.effectiveBooleanValue (IntegratedFunctionCall.java:344)
      at net.sf.saxon.expr.OrExpression.effectiveBooleanValue (OrExpression.java:137)
      at net.sf.saxon.expr.FilterIterator$NonNumeric.matches (FilterIterator.java:180)
      at net.sf.saxon.expr.FilterIterator.getNextMatchingItem (FilterIterator.java:77)
      at net.sf.saxon.expr.FilterIterator.next (FilterIterator.java:63)
      at net.sf.saxon.om.FocusTrackingIterator.next (FocusTrackingIterator.java:76)
      at net.sf.saxon.expr.FilterIterator.getNextMatchingItem (FilterIterator.java:76)
      at net.sf.saxon.expr.FilterIterator.next (FilterIterator.java:63)
      at net.sourceforge.pmd.lang.rule.xpath.internal.SaxonXPathRuleQuery.evaluate (SaxonXPathRuleQuery.java:127)
      at net.sourceforge.pmd.lang.rule.XPathRule.apply (XPathRule.java:131)
      at net.sourceforge.pmd.lang.rule.AbstractDelegateRule.apply (AbstractDelegateRule.java:232)
      at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.applyOnIndex (RuleApplicator.java:75)
      at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.apply (RuleApplicator.java:55)
      at net.sourceforge.pmd.RuleSets.apply (RuleSets.java:158)
      at net.sourceforge.pmd.lang.impl.PmdRunnable.processSource (PmdRunnable.java:140)
      at net.sourceforge.pmd.lang.impl.PmdRunnable.run (PmdRunnable.java:80)
      at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:572)
      at java.util.concurrent.FutureTask.run (FutureTask.java:317)
      at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1144)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:642)
      at java.lang.Thread.run (Thread.java:1583)
  [WARNING] Exception occurred on node !debug only! [ClassOrInterfaceType:71:59]MyScope

valodzka · 2024-02-21T21:52:58Z

Similar issue, see it randomly when runnig mvn pmd:pmd

org.apache.commons.lang3.exception.ContextedRuntimeException: java.lang.NullPointerException: Cannot invoke "net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub$EnclosingInfo.getEnclosingClass()" because "this.enclosingInfo" is null
Exception Context:
	[1:Rule applied on node=!debug only! [ClassOrInterfaceDeclaration:14:8]@State(Scope.Thread)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@BenchmarkMode(Mode.AverageTime)
public class BenchRemainderVsCondition {
    in(truncated)]
---------------------------------
    at net.sourceforge.pmd.util.AssertionUtil.contexted (AssertionUtil.java:232)
    at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.applyOnIndex (RuleApplicator.java:77)
    at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.apply (RuleApplicator.java:55)
    at net.sourceforge.pmd.RuleSets.apply (RuleSets.java:158)
    at net.sourceforge.pmd.lang.impl.PmdRunnable.processSource (PmdRunnable.java:140)
    at net.sourceforge.pmd.lang.impl.PmdRunnable.run (PmdRunnable.java:80)
    at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:572)
    at java.util.concurrent.FutureTask.run (FutureTask.java:317)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1144)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:642)
    at java.lang.Thread.run (Thread.java:1583)
Caused by: java.lang.NullPointerException: Cannot invoke "net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub$EnclosingInfo.getEnclosingClass()" because "this.enclosingInfo" is null
    at net.sourceforge.pmd.lang.java.symbols.internal.asm.ClassStub.getEnclosingClass (ClassStub.java:355)
    at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.makeEnclosingOf (ClassTypeImpl.java:117)
    at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.<init> (ClassTypeImpl.java:77)
    at net.sourceforge.pmd.lang.java.types.ClassTypeImpl.<init> (ClassTypeImpl.java:64)
    at net.sourceforge.pmd.lang.java.types.TypeSystem.typeOf (TypeSystem.java:458)
    at net.sourceforge.pmd.lang.java.types.TypeSystem.rawType (TypeSystem.java:485)
    at net.sourceforge.pmd.lang.java.types.TypesFromReflection.loadClassMaybeArray (TypesFromReflection.java:237)
    at net.sourceforge.pmd.lang.java.types.TypesFromReflection.loadType (TypesFromReflection.java:205)
    at net.sourceforge.pmd.lang.java.types.TypeTestUtil.isA (TypeTestUtil.java:176)
    at net.sourceforge.pmd.lang.java.types.TypeTestUtil.isA (TypeTestUtil.java:122)
    at net.sourceforge.pmd.lang.java.rule.xpath.internal.BaseContextNodeTestFun$1.call (BaseContextNodeTestFun.java:71)
    at net.sf.saxon.lib.ExtensionFunctionCall.effectiveBooleanValue (ExtensionFunctionCall.java:187)
    at net.sf.saxon.functions.IntegratedFunctionCall.effectiveBooleanValue (IntegratedFunctionCall.java:344)
    at net.sf.saxon.expr.OrExpression.effectiveBooleanValue (OrExpression.java:137)
    at net.sf.saxon.expr.OrExpression.effectiveBooleanValue (OrExpression.java:137)
    at net.sf.saxon.expr.OrExpression.effectiveBooleanValue (OrExpression.java:137)
    at net.sf.saxon.expr.FilterIterator$NonNumeric.matches (FilterIterator.java:180)
    at net.sf.saxon.expr.FilterIterator.getNextMatchingItem (FilterIterator.java:77)
    at net.sf.saxon.expr.FilterIterator.next (FilterIterator.java:63)
    at net.sourceforge.pmd.lang.rule.xpath.internal.SaxonXPathRuleQuery.evaluate (SaxonXPathRuleQuery.java:127)
    at net.sourceforge.pmd.lang.rule.XPathRule.apply (XPathRule.java:131)
    at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.applyOnIndex (RuleApplicator.java:75)
    at net.sourceforge.pmd.lang.rule.internal.RuleApplicator.apply (RuleApplicator.java:55)
    at net.sourceforge.pmd.RuleSets.apply (RuleSets.java:158)
    at net.sourceforge.pmd.lang.impl.PmdRunnable.processSource (PmdRunnable.java:140)
    at net.sourceforge.pmd.lang.impl.PmdRunnable.run (PmdRunnable.java:80)
    at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:572)
    at java.util.concurrent.FutureTask.run (FutureTask.java:317)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1144)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:642)
    at java.lang.Thread.run (Thread.java:1583)

Refs pmd#4757

Refs #4757

adangel added the a:bug PMD crashes or fails to analyse a file. label Dec 1, 2023

adangel added this to the 7.0.0 milestone Dec 1, 2023

adangel mentioned this issue Dec 1, 2023

Fixes NoSuchMethodError on processing errors in pmd-compat6 #4749

Merged

4 tasks

adangel pinned this issue Jan 11, 2024

adangel self-assigned this Feb 24, 2024

adangel added a commit to adangel/pmd that referenced this issue Feb 24, 2024

[java] Fix intermittent NPE ClassSub.enclosingInfo is null

a8c41a5

Refs pmd#4757

adangel mentioned this issue Feb 24, 2024

[java] Fix intermittent NPE ClassSub.enclosingInfo is null #4834

Merged

4 tasks

adangel added a commit to adangel/pmd that referenced this issue Feb 25, 2024

[doc] Update release notes (pmd#4757)

cf12435

adangel unpinned this issue Mar 5, 2024

adangel added a commit that referenced this issue Mar 7, 2024

[ci] Skip pmd/cpd during release builds to avoid failures

84af109

Refs #4757

jsotuyod closed this as completed in #4834 Mar 11, 2024

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[java] Intermittent NPEs while analyzing Java code #4757

[java] Intermittent NPEs while analyzing Java code #4757

adangel commented Dec 1, 2023

adangel commented Dec 1, 2023

emouty commented Feb 9, 2024

valodzka commented Feb 21, 2024

[java] Intermittent NPEs while analyzing Java code #4757

[java] Intermittent NPEs while analyzing Java code #4757

Comments

adangel commented Dec 1, 2023

adangel commented Dec 1, 2023

emouty commented Feb 9, 2024

valodzka commented Feb 21, 2024