NullPointerException with TruthAssertExpected

[gyyu]

Description of the problem / feature request:

Encountering an unhandled exception in the Error Prone static analysis plugin for IntelliJ when building. Using the latest version of IntelliJ with JDK 11.

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

Repro from the error stack trace:

error-prone version: 2.4.0
     BugPattern: TruthAssertExpected
     Stack Trace:
     java.lang.NullPointerException
  	at com.google.errorprone.fixes.SuggestedFixes.compilesWithFix(SuggestedFixes.java:1214)
  	at com.google.errorprone.fixes.SuggestedFixes.compilesWithFix(SuggestedFixes.java:1100)
  	at com.google.errorprone.fixes.SuggestedFixes.compilesWithFix(SuggestedFixes.java:1082)
  	at com.google.errorprone.bugpatterns.TruthAssertExpected.matchMethodInvocation(TruthAssertExpected.java:175)
  	at com.google.errorprone.scanner.ErrorProneScanner.processMatchers(ErrorProneScanner.java:451)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitMethodInvocation(ErrorProneScanner.java:748)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitMethodInvocation(ErrorProneScanner.java:152)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1650)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitExpressionStatement(TreeScanner.java:433)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitExpressionStatement(ErrorProneScanner.java:635)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitExpressionStatement(ErrorProneScanner.java:152)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1460)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:248)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitBlock(ErrorProneScanner.java:522)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitBlock(ErrorProneScanner.java:152)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1032)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitMethod(TreeScanner.java:206)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitMethod(ErrorProneScanner.java:742)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitMethod(ErrorProneScanner.java:152)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:898)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:187)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitClass(ErrorProneScanner.java:550)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitClass(ErrorProneScanner.java:152)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:808)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:144)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:562)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:152)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:591)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:56)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:58)
  	at com.google.errorprone.scanner.ErrorProneScannerTransformer.apply(ErrorProneScannerTransformer.java:43)
  	at com.google.errorprone.ErrorProneAnalyzer.finished(ErrorProneAnalyzer.java:152)
  	at jdk.compiler/com.sun.tools.javac.api.MultiTaskListener.finished(MultiTaskListener.java:132)
  	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1418)
  	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1365)
  	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:960)
  	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)
  	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.handleExceptions(JavacTaskImpl.java:147)
  	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)
  	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)
  	at org.jetbrains.jps.javac.JavacMain.compile(JavacMain.java:231)
  	at org.jetbrains.jps.incremental.java.JavaBuilder.compileJava(JavaBuilder.java:501)
  	at org.jetbrains.jps.incremental.java.JavaBuilder.compile(JavaBuilder.java:353)
  	at org.jetbrains.jps.incremental.java.JavaBuilder.doBuild(JavaBuilder.java:277)
  	at org.jetbrains.jps.incremental.java.JavaBuilder.build(JavaBuilder.java:231)
  	at org.jetbrains.jps.incremental.IncProjectBuilder.runModuleLevelBuilders(IncProjectBuilder.java:1441)
  	at org.jetbrains.jps.incremental.IncProjectBuilder.runBuildersForChunk(IncProjectBuilder.java:1100)
  	at org.jetbrains.jps.incremental.IncProjectBuilder.buildTargetsChunk(IncProjectBuilder.java:1224)
  	at org.jetbrains.jps.incremental.IncProjectBuilder.buildChunkIfAffected(IncProjectBuilder.java:1066)
  	at org.jetbrains.jps.incremental.IncProjectBuilder.buildChunks(IncProjectBuilder.java:832)
  	at org.jetbrains.jps.incremental.IncProjectBuilder.runBuild(IncProjectBuilder.java:419)
  	at org.jetbrains.jps.incremental.IncProjectBuilder.build(IncProjectBuilder.java:183)
  	at org.jetbrains.jps.cmdline.BuildRunner.runBuild(BuildRunner.java:132)
  	at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:302)
  	at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:132)
  	at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler.lambda$channelRead0$0(BuildMain.java:219)
  	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  	at java.base/java.lang.Thread.run(Thread.java:834)

What version of Error Prone are you using?

2.4.0

Have you found anything relevant by searching the web?

I've found other issues that were either different versions or different errors; I've also followed solutions given such as making sure things were up to date.

[cushon]

This is a duplicate of #1873, it's fixed in 2.5.0 and newer versions. Updating to the latest version should fix this, if you're still getting this crash with 2.6.0 please re-open.