IndexOutOfBoundsException from UnusedVariable

[csymeonides-mf]

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Description of the problem / feature request:

Error when compiling with Error Prone, possibly related to Lombok

 error-prone version: 2.3.3
 BugPattern: UnusedVariable
 Stack Trace:
 java.lang.IndexOutOfBoundsException
at java.nio.HeapCharBuffer.subSequence(HeapCharBuffer.java:580)
at java.nio.HeapCharBuffer.subSequence(HeapCharBuffer.java:42)
at com.google.errorprone.fixes.SuggestedFixes.replaceIncludingComments(SuggestedFixes.java:1021)
at com.google.errorprone.bugpatterns.UnusedVariable.buildUnusedVarFixes(UnusedVariable.java:387)
at com.google.errorprone.bugpatterns.UnusedVariable.matchCompilationUnit(UnusedVariable.java:239)
at com.google.errorprone.scanner.ErrorProneScanner.processMatchers(ErrorProneScanner.java:433)
at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:541)
at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:150)
at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:591)
at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:56)
at com.google.errorprone.scanner.Scanner.scan(Scanner.java:55)
at com.google.errorprone.scanner.ErrorProneScannerTransformer.apply(ErrorProneScannerTransformer.java:43)
at com.google.errorprone.ErrorProneAnalyzer.finished(ErrorProneAnalyzer.java:151)
at com.sun.tools.javac.api.MultiTaskListener.finished(MultiTaskListener.java:120)
at com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1404)
at com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1353)
at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:952)
at com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:100)
at com.sun.tools.javac.api.JavacTaskImpl.handleExceptions(JavacTaskImpl.java:142)
at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:96)
at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:90)
at com.google.errorprone.BaseErrorProneCompiler.run(BaseErrorProneCompiler.java:143)
at com.google.errorprone.BaseErrorProneCompiler.run(BaseErrorProneCompiler.java:114)
at com.google.errorprone.ErrorProneCompiler.run(ErrorProneCompiler.java:121)
at org.codehaus.plexus.compiler.javac.errorprone.JavacCompilerWithErrorProne$CompilerInvoker.compile(JavacCompilerWithErrorProne.java:223)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.plexus.compiler.javac.errorprone.JavacCompilerWithErrorProne.performCompile(JavacCompilerWithErrorProne.java:91)
at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1134)
at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:187)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
at org.codehaus.classworlds.Launcher.main(Launcher.java:47)

Bugs: what's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

My pom.xml:

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.1</version>
        <configuration>
          <compilerId>javac-with-errorprone</compilerId>
          <forceJavacCompilerUse>true</forceJavacCompilerUse>
          <source>1.8</source>
          <target>1.8</target>
          <annotationProcessorPaths>
            <path>
              <groupId>io.grpc</groupId>
              <artifactId>grpc-java-api-checker</artifactId>
              <version>1.1.0</version>
            </path>
            <path>
              <groupId>org.projectlombok</groupId>
              <artifactId>lombok</artifactId>
              <version>1.18.8</version>
            </path>
          </annotationProcessorPaths>
          <compilerArgs>
            <arg>-Xep:GrpcInternal:ERROR</arg>
            <arg>-Xep:GrpcExperimentalApi:ERROR</arg>
          </compilerArgs>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.codehaus.plexus</groupId>
            <artifactId>plexus-compiler-javac-errorprone</artifactId>
            <version>2.8.5</version>
          </dependency>
          <dependency>
            <groupId>com.google.errorprone</groupId>
            <artifactId>error_prone_core</artifactId>
            <version>2.3.3</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>

What version of Error Prone are you using?

2.3.3

Have you found anything relevant by searching the web?

Issue #1250 which has been closed with a workaround, but ideally I don't want to disable any useful checks!

[cushon]

This is a duplicate of #1250 (which was closed earlier, but has been re-opened)

[cushon]

This is a duplicate of #1250 (which was closed earlier, but has been re-opened)