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NullPointerException thrown during analysis #3220

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xzel23 opened this issue May 25, 2022 · 2 comments
Closed

NullPointerException thrown during analysis #3220

xzel23 opened this issue May 25, 2022 · 2 comments

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@xzel23
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xzel23 commented May 25, 2022 •
edited

After Upgrading from 2.12.1 I get this error during analysis:

C:\Users\axel\IdeaProjects\utility\utility\build\generated-sources\cabe\com\dua3\utility\math\MathUtil.java:478: error: An unhandled exception was thrown by the Error Prone static analysis plugin.
                x -> x >= 0 ? java.lang.Math.ceil(x - 0.5) : java.lang.Math.floor(x + 0.5);             case HALF_EVEN ->                 java.lang.Math::rint;
                                                                                                                                          ^
     Please report this at https://github.com/google/error-prone/issues/new and include the following:

     error-prone version: 2.14.0
     BugPattern: Immutable
     Stack Trace:
     java.lang.NullPointerException: Cannot invoke "com.google.errorprone.util.ASTHelpers$TargetType.type()" because the return value of "com.google.errorprone.util.ASTHelpers.targetType(com.google.errorprone.VisitorState)" is null   
        at com.google.errorprone.bugpatterns.threadsafety.ImmutableChecker.matchMemberReference(ImmutableChecker.java:150)
        at com.google.errorprone.scanner.ErrorProneScanner.processMatchers(ErrorProneScanner.java:449)
        at com.google.errorprone.scanner.ErrorProneScanner.visitMemberReference(ErrorProneScanner.java:715)
        at com.google.errorprone.scanner.ErrorProneScanner.visitMemberReference(ErrorProneScanner.java:150)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMemberReference.accept(JCTree.java:2546)
        at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
        at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
        at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
@tbroyer tbroyer mentioned this issue May 26, 2022
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This was referenced Jun 15, 2022
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@sshevlyagin
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I got a similar error and stack in 2.15.0

case VERTICAL_1 -> ItemFacetMapper.INSTANCE::facetEntryToVerticalGraphQLObject;
                           ^
     Please report this at https://github.com/google/error-prone/issues/new and include the following:
  
     error-prone version: 2.15.0
     BugPattern: Immutable
     Stack Trace:
     java.lang.NullPointerException: Cannot invoke "com.google.errorprone.util.ASTHelpers$TargetType.type()" because the return value of "com.google.errorprone.util.ASTHelpers.targetType(com.google.errorprone.VisitorState)" is null
  	at com.google.errorprone.bugpatterns.threadsafety.ImmutableChecker.matchMemberReference(ImmutableChecker.java:146)
  	at com.google.errorprone.scanner.ErrorProneScanner.processMatchers(ErrorProneScanner.java:449)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitMemberReference(ErrorProneScanner.java:715)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitMemberReference(ErrorProneScanner.java:150)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMemberReference.accept(JCTree.java:2546)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
  	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:96)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitCase(TreeScanner.java:401)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitCase(ErrorProneScanner.java:534)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitCase(ErrorProneScanner.java:150)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCCase.accept(JCTree.java:1357)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:111)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:119)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitSwitchExpression(TreeScanner.java:384)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCSwitchExpression.accept(JCTree.java:1390)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
  	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.visitReturn(TreeScanner.java:544)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitReturn(ErrorProneScanner.java:817)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitReturn(ErrorProneScanner.java:150)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1717)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:111)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:272)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitBlock(ErrorProneScanner.java:520)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitBlock(ErrorProneScanner.java:150)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1103)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
  	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:96)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitMethod(TreeScanner.java:224)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitMethod(ErrorProneScanner.java:740)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitMethod(ErrorProneScanner.java:150)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:953)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
  	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:96)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:111)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:119)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:203)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitClass(ErrorProneScanner.java:548)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitClass(ErrorProneScanner.java:150)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:860)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
  	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:111)
  	at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:119)
  	at jdk.compiler/com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:152)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:560)
  	at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:150)
  	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:614)
  	at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:60)
  	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)
  	```

@simon04 simon04 mentioned this issue Oct 3, 2022
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@vitalyd
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vitalyd commented Oct 11, 2022

I'm seeing the same NPE with switch expressions on java 17 and errorprone 2.15.0. It sounds like 7504736 fixes it, but the 2.15.0 release on Maven Central doesn't have it. Any idea when this fix will be released?

Thanks

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ImmutableChecker handles null types schlosna/error-prone
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@vitalyd @sshevlyagin @xzel23