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  1. Groovy
  2. GROOVY-10046

NPE in static compiler

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 3.0.8
    • Fix Version/s: 4.0.0-beta-1
    • Component/s: Static compilation
    • Labels:
      None

      Description

      I produced this example as a repro for a bug in generic inference (I think perhaps having to do with the reuse of the generic bound T in Collectors.toMap), but I found that it triggers an NPE in the static compiler. @TypeChecked does not have a problem.

      import static java.util.stream.Collectors.toMap
      
      import java.util.stream.Stream
      
      import groovy.transform.CompileStatic
      
      @CompileStatic
      class GroovyAbc {
          static class Record {
              String name
              Integer quantity
          }
      
          void demo() {
              Stream.of(new Record(name: 'foo', quantity: 3))
                  .collect(
                      toMap(
                          Record::getName,
                          Record::getQuantity
                      )
                  )
          }
      }
      
      [ERROR] groovy.lang.GroovyRuntimeException: NullPointerException while processing GroovyAbc.groovy. /home/christopher/git/path/bugs/GroovyAbc.groovy
      [ERROR]         at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:294)
      [ERROR]         at org.codehaus.groovy.control.CompilationUnit$3.call(CompilationUnit.java:797)
      [ERROR]         at org.codehaus.groovy.control.CompilationUnit$IPrimaryClassNodeOperation.doPhaseOperation(CompilationUnit.java:942)
      [ERROR]         at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:671)
      [ERROR]         at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:635)
      [ERROR]         at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:610)
      [ERROR]         at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      [ERROR]         at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      [ERROR]         at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      [ERROR]         at java.base/java.lang.reflect.Method.invoke(Method.java:566)
      [ERROR]         at org.codehaus.gmavenplus.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:214)
      [ERROR]         at org.codehaus.gmavenplus.mojo.AbstractCompileMojo.doCompile(AbstractCompileMojo.java:288)
      [ERROR]         at org.codehaus.gmavenplus.mojo.CompileTestsMojo.execute(CompileTestsMojo.java:76)
      [ERROR]         at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
      [ERROR]         at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
      [ERROR]         at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
      [ERROR]         at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
      [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:305)
      [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:956)
      [ERROR]         at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
      [ERROR]         at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)
      [ERROR]         at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      [ERROR]         at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      [ERROR]         at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      [ERROR]         at java.base/java.lang.reflect.Method.invoke(Method.java:566)
      [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)
      [ERROR] Caused by: java.lang.NullPointerException
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticTypesMethodReferenceExpressionWriter.createParametersWithExactType(StaticTypesMethodReferenceExpressionWriter.java:283)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticTypesMethodReferenceExpressionWriter.writeMethodReferenceExpression(StaticTypesMethodReferenceExpressionWriter.java:107)
      [ERROR]         at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethodReferenceExpression(AsmClassGenerator.java:786)
      [ERROR]         at org.codehaus.groovy.ast.expr.MethodReferenceExpression.visit(MethodReferenceExpression.java:34)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.visitArgument(StaticInvocationWriter.java:514)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.loadArguments(StaticInvocationWriter.java:461)
      [ERROR]         at org.codehaus.groovy.classgen.asm.InvocationWriter.writeDirectMethodCall(InvocationWriter.java:208)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.writeDirectMethodCall(StaticInvocationWriter.java:387)
      [ERROR]         at org.codehaus.groovy.classgen.asm.InvocationWriter.makeDirectCall(InvocationWriter.java:299)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.makeDirectCall(StaticInvocationWriter.java:133)
      [ERROR]         at org.codehaus.groovy.classgen.asm.InvocationWriter.makeCall(InvocationWriter.java:381)
      [ERROR]         at org.codehaus.groovy.classgen.asm.InvocationWriter.makeCall(InvocationWriter.java:121)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.makeCall(StaticInvocationWriter.java:649)
      [ERROR]         at org.codehaus.groovy.classgen.asm.InvocationWriter.writeInvokeMethod(InvocationWriter.java:456)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.writeInvokeMethod(StaticInvocationWriter.java:140)
      [ERROR]         at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethodCallExpression(AsmClassGenerator.java:844)
      [ERROR]         at org.codehaus.groovy.ast.expr.MethodCallExpression.visit(MethodCallExpression.java:76)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.visitArgument(StaticInvocationWriter.java:514)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.loadArguments(StaticInvocationWriter.java:461)
      [ERROR]         at org.codehaus.groovy.classgen.asm.InvocationWriter.writeDirectMethodCall(InvocationWriter.java:208)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.writeDirectMethodCall(StaticInvocationWriter.java:387)
      [ERROR]         at org.codehaus.groovy.classgen.asm.InvocationWriter.makeDirectCall(InvocationWriter.java:299)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.makeDirectCall(StaticInvocationWriter.java:133)
      [ERROR]         at org.codehaus.groovy.classgen.asm.InvocationWriter.makeCall(InvocationWriter.java:381)
      [ERROR]         at org.codehaus.groovy.classgen.asm.InvocationWriter.makeCall(InvocationWriter.java:121)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.makeCall(StaticInvocationWriter.java:649)
      [ERROR]         at org.codehaus.groovy.classgen.asm.InvocationWriter.writeInvokeMethod(InvocationWriter.java:456)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.writeInvokeMethod(StaticInvocationWriter.java:140)
      [ERROR]         at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethodCallExpression(AsmClassGenerator.java:844)
      [ERROR]         at org.codehaus.groovy.ast.expr.MethodCallExpression.visit(MethodCallExpression.java:76)
      [ERROR]         at org.codehaus.groovy.classgen.asm.StatementWriter.writeExpressionStatement(StatementWriter.java:635)
      [ERROR]         at org.codehaus.groovy.classgen.AsmClassGenerator.visitExpressionStatement(AsmClassGenerator.java:686)
      [ERROR]         at org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:40)
      [ERROR]         at org.codehaus.groovy.classgen.asm.StatementWriter.writeBlockStatement(StatementWriter.java:94)
      [ERROR]         at org.codehaus.groovy.classgen.asm.sc.StaticTypesStatementWriter.writeBlockStatement(StaticTypesStatementWriter.java:78)
      [ERROR]         at org.codehaus.groovy.classgen.AsmClassGenerator.visitBlockStatement(AsmClassGenerator.java:617)
      [ERROR]         at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:69)
      [ERROR]         at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:138)
      [ERROR]         at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:111)
      [ERROR]         at org.codehaus.groovy.classgen.AsmClassGenerator.visitStdMethod(AsmClassGenerator.java:461)
      [ERROR]         at org.codehaus.groovy.classgen.AsmClassGenerator.visitConstructorOrMethod(AsmClassGenerator.java:408)
      [ERROR]         at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:106)
      [ERROR]         at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethod(AsmClassGenerator.java:556)
      [ERROR]         at org.codehaus.groovy.ast.ClassNode.visitMethods(ClassNode.java:1099)
      [ERROR]         at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1092)
      [ERROR]         at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:52)
      [ERROR]         at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:271)
      [ERROR]         ... 34 more
      

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            • Assignee:
              emilles Eric Milles
              Reporter:
              chrylis Christopher Smith
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              • Created:
                Updated:
                Resolved: