GetClassOnAnnotation: An unhandled exception was thrown

[slinstaedt]

Given:

import java.lang.annotation.Annotation;
import java.util.stream.Stream;

interface AnnotationLiteral extends Annotation {

	@Override
	@SuppressWarnings("unchecked")
	default Class<? extends Annotation> annotationType() {
		return (Class<? extends Annotation>) Stream.of(getClass().getInterfaces())
				.filter(Annotation.class::isAssignableFrom)
				.filter(iface -> !iface.equals(AnnotationLiteral.class))
				.findFirst()
				.orElseThrow();
	}
}

When compiling with:

Apache Maven 3.9.15 (98b2cdbfdb5f1ac8781f537ea9acccaed7922349)
Maven home: /opt/homebrew/Cellar/maven/3.9.15/libexec
Java version: 25.0.2, vendor: Homebrew, runtime: /opt/homebrew/Cellar/openjdk/25.0.2/libexec/openjdk.jdk/Contents/Home
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "26.4.1", arch: "aarch64", family: "mac"

Then unfortunately:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.15.0:compile (default-compile) on project common-processor: Compilation failure
[ERROR] /Users/sven/work/java/xertz-helpers/common/processor/src/main/java/io/xertz/helpers/common/processor/AnnotationLiteral.java:[14,72] An unhandled exception was thrown by the Error Prone static analysis plugin.
[ERROR]      Please report this at https://github.com/google/error-prone/issues/new and include the following, as well as a reproducing code sample (if possible):
[ERROR]   
[ERROR]      error-prone version: 2.49.0
[ERROR]      BugPattern: GetClassOnAnnotation
[ERROR]      Stack Trace:
[ERROR]      java.lang.NullPointerException: Cannot invoke com.sun.tools.javac.util.JCDiagnostic$DiagnosticPosition.getEndPosition(EndPosTable)int/invokeInterface with null receiver
[ERROR]         at java.base/java.lang.invoke.DirectMethodHandle$Interface.checkReceiver(DirectMethodHandle.java:456)
[ERROR]         at com.google.errorprone.fixes.ErrorProneEndPosTable.lambda$create$0(ErrorProneEndPosTable.java:116)
[ERROR]         at com.google.errorprone.fixes.ErrorProneEndPosTable.getEndPosition(ErrorProneEndPosTable.java:143)
[ERROR]         at com.google.errorprone.fixes.ErrorProneEndPosTable.getEndPosition(ErrorProneEndPosTable.java:135)
[ERROR]         at com.google.errorprone.VisitorState.getEndPosition(VisitorState.java:563)
[ERROR]         at com.google.errorprone.bugpatterns.GetClassOnAnnotation.matchMethodInvocation(GetClassOnAnnotation.java:51)
[ERROR]         at com.google.errorprone.scanner.ErrorProneScanner.processMatchers(ErrorProneScanner.java:541)
[ERROR]         at com.google.errorprone.scanner.ErrorProneScanner.visitMethodInvocation(ErrorProneScanner.java:890)
[ERROR]         at com.google.errorprone.scanner.ErrorProneScanner.visitMethodInvocation(ErrorProneScanner.java:180)
[ERROR]         at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1876)
[ERROR]         at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:92)
[ERROR]         at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
[ERROR]         at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
...

Expected:
Some compiler warning or error ;)

[cushon]

Thanks for the report and for the nice repro!

The diagnostic it's trying to report would suggest this, getClass() there would return AnnotationLiteral.class not whatever the annotation class is being modelled:

-		return (Class<? extends Annotation>) Stream.of(getClass().getInterfaces())
+		return (Class<? extends Annotation>) Stream.of(annotationType().getInterfaces())