Description Walter Harley 2010-07-24 22:09:31 EDT

+++ This bug was initially created as a clone of Bug #318134 +++

Build Identifier: I20100608-0911

With APT enabled, methods annotated with SuppressWarnings, a generic parameter, and an unresolved inner type will cause an NPE compiler crash.

Reproducible: Always

Steps to Reproduce:
Put the following code in an APT-enabled project:

public class Foo {	
	@SuppressWarnings("unchecked")
	private <B> void bar(final Zaz.Inner<B> zaz) {
	}
}

Where Zaz is an unresolved type and you should get the following stack trace [1].

Note that changing Zaz.Inner<B> to "Zaz<B>" or "Zaz.Inner" both make the NPE go away. As does removing the SuppressWarnings, or disabling the APT processor. Or changing "Zaz" to be a resolved type (say java.util.Map or fixing the classpath error that led to Zaz being unavailable).

[1]: java.lang.NullPointerException
at org.eclipse.jdt.internal.compiler.apt.model.ElementImpl.hashCode(ElementImpl.java:110)
at java.util.HashMap.put(HashMap.java:372)
at java.util.HashSet.add(HashSet.java:200)
at org.eclipse.jdt.internal.compiler.apt.util.ManyToMany.put(ManyToMany.java:198)
at org.eclipse.jdt.internal.compiler.apt.dispatch.AnnotationDiscoveryVisitor.resolveAnnotations(AnnotationDiscoveryVisitor.java:187)
at org.eclipse.jdt.internal.compiler.apt.dispatch.AnnotationDiscoveryVisitor.visit(AnnotationDiscoveryVisitor.java:128)
at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:230)
at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1290)
at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.traverse(CompilationUnitDeclaration.java:691)
at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundEnvImpl.<init>(RoundEnvImpl.java:56)
at org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:148)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:134)
at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:809)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:428)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:364)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:178)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:301)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:60)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:254)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:173)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:629)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:172)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:203)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:255)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:258)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:311)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:343)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:144)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:242)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)