[Bug] Lombok makes UnusedVariable cause IndexOutOfBoundsException in 2.18.0

[ksilz]

This is the error report:

      error-prone version: 2.18.0
[ERROR]      BugPattern: UnusedVariable
[ERROR]      Stack Trace:
[ERROR]      java.lang.IndexOutOfBoundsException: Range [311, 304) out of bounds for length 460
[ERROR]   	at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)
[ERROR]   	at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckFromToIndex(Preconditions.java:76)
[ERROR]   	at java.base/jdk.internal.util.Preconditions.checkFromToIndex(Preconditions.java:313)
[ERROR]   	at java.base/java.util.Objects.checkFromToIndex(Objects.java:385)
[ERROR]   	at java.base/java.nio.HeapCharBuffer.subSequence(HeapCharBuffer.java:664)
[ERROR]   	at java.base/java.nio.HeapCharBuffer.subSequence(HeapCharBuffer.java:44)
[ERROR]   	at com.google.errorprone.VisitorState.getOffsetTokens(VisitorState.java:595)
[ERROR]   	at com.google.errorprone.fixes.SuggestedFixes.replaceIncludingComments(SuggestedFixes.java:1667)
[ERROR]   	at com.google.errorprone.bugpatterns.UnusedVariable.buildUnusedVarFixes(UnusedVariable.java:409)
[ERROR]   	at com.google.errorprone.bugpatterns.UnusedVariable.matchCompilationUnit(UnusedVariable.java:249)
[ERROR]   	at com.google.errorprone.scanner.ErrorProneScanner.processMatchers(ErrorProneScanner.java:449)
[ERROR]   	at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:555)
[ERROR]   	at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:150)
[ERROR]   	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:614)
[ERROR]   	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:60)
[ERROR]   	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:58)
[ERROR]   	at com.google.errorprone.scanner.ErrorProneScannerTransformer.apply(ErrorProneScannerTransformer.java:43)
[ERROR]   	at com.google.errorprone.ErrorProneAnalyzer.finished(ErrorProneAnalyzer.java:156)
[ERROR]   	at jdk.compiler/com.sun.tools.javac.api.MultiTaskListener.finished(MultiTaskListener.java:132)
[ERROR]   	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1394)
[ERROR]   	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1341)
[ERROR]   	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:933)
[ERROR]   	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)
[ERROR]   	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.invocationHelper(JavacTaskImpl.java:152)
[ERROR]   	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)
[ERROR]   	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)
[ERROR]   	at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:136)
[ERROR]   	at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:182)
[ERROR]   	at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1209)
[ERROR]   	at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:198)
[ERROR]   	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
[ERROR]   	at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2(MojoExecutor.java:370)
[ERROR]   	at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute(MojoExecutor.java:351)
[ERROR]   	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:215)
[ERROR]   	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:171)
[ERROR]   	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:163)
[ERROR]   	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
[ERROR]   	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
[ERROR]   	at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
[ERROR]   	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
[ERROR]   	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:298)
[ERROR]   	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
[ERROR]   	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
[ERROR]   	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:960)
[ERROR]   	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:293)
[ERROR]   	at org.apache.maven.cli.MavenCli.main(MavenCli.java:196)
[ERROR]   	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR]   	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
[ERROR]   	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERROR]   	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
[ERROR]   	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:282)
[ERROR]   	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:225)
[ERROR]   	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:406)
[ERROR]   	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347)

Here's the code of a Java 17 Spring Boot 3.0.1 application with Lombok that triggers the bug:

package com.someone.importerprint;

import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@Slf4j
public class ImporterPrintApplication {
  public static void main(String[] args) {
    SpringApplication.run(ImporterPrintApplication.class, args);
  }

}

If I remove the @Slf4j annotation, then the error goes away.

[rickie]

This is a duplicate of #1250.

The error occurs because Slf4j causes Lombok to generate a variable that is not used in the code.