NPE in the IDE

1

The IDEA is repeatedly crashing when I try to start a debug session with the following exception (I also reported this bug automatically from IDEA but I thought I'd mention it here as well).

4:25:28 PM Throwable            java.lang.IllegalStateException: Internal error: (5,47) java.lang.NullPointerException            @IntrinsicMethods.java:277            at org.jetbrains.jet.codegen.CompilationErrorHandler$1.reportException(CompilationErrorHandler.java:27)            at org.jetbrains.jet.codegen.GenerationState.compileCorrectFiles(GenerationState.java:120)            at org.jetbrains.jet.compiler.CompileSession.generate(CompileSession.java:161)            at org.jetbrains.jet.compiler.CompileEnvironment.compileModule(CompileEnvironment.java:156)            at org.jetbrains.jet.compiler.CompileEnvironment.compileModuleScript(CompileEnvironment.java:107)            at org.jetbrains.jet.cli.KotlinCompiler.exec(KotlinCompiler.java:144)            at org.jetbrains.jet.cli.KotlinCompiler.exec(KotlinCompiler.java:90)            at sun.reflect.GeneratedMethodAccessor184.invoke(Unknown Source)            at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)            at java.lang.reflect.Method.invoke(Method.java:597)            at org.jetbrains.jet.plugin.compiler.JetCompiler.execInProcess(JetCompiler.java:276)            at org.jetbrains.jet.plugin.compiler.JetCompiler.runInProcess(JetCompiler.java:243)            at org.jetbrains.jet.plugin.compiler.JetCompiler.doCompile(JetCompiler.java:148)            at org.jetbrains.jet.plugin.compiler.JetCompiler.compile(JetCompiler.java:104)            at com.intellij.compiler.impl.CompileDriver.a(CompileDriver.java:1931)            at com.intellij.compiler.impl.CompileDriver.a(CompileDriver.java:1254)            at com.intellij.compiler.impl.CompileDriver.a(CompileDriver.java:986)            at com.intellij.compiler.impl.CompileDriver.a(CompileDriver.java:747)            at com.intellij.compiler.impl.CompileDriver.access$1000(CompileDriver.java:104)            at com.intellij.compiler.impl.CompileDriver$8.run(CompileDriver.java:665)            at com.intellij.compiler.progress.CompilerTask.run(CompilerTask.java:155)            at com.intellij.openapi.progress.impl.ProgressManagerImpl$TaskRunnable.run(ProgressManagerImpl.java:469)            at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:178)            at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)            at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:169)            at com.intellij.openapi.progress.impl.ProgressManagerImpl$8.run(ProgressManagerImpl.java:378)            at com.intellij.openapi.application.impl.ApplicationImpl$6.run(ApplicationImpl.java:434)            at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)            at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)            at java.util.concurrent.FutureTask.run(FutureTask.java:138)            at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)            at java.lang.Thread.run(Thread.java:680)            at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:145)            Caused by: Internal error: (5,47) java.lang.NullPointerException            @IntrinsicMethods.java:277            at org.jetbrains.jet.codegen.ExpressionCodegen.genQualified(ExpressionCodegen.java:156)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:161)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:165)            at org.jetbrains.jet.codegen.ExpressionCodegen.invokeAppend(ExpressionCodegen.java:2020)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitStringTemplateExpression(ExpressionCodegen.java:704)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitStringTemplateExpression(ExpressionCodegen.java:58)            at org.jetbrains.jet.lang.psi.JetStringTemplateExpression.accept(JetStringTemplateExpression.java:37)            at org.jetbrains.jet.codegen.ExpressionCodegen.genQualified(ExpressionCodegen.java:147)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:161)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:165)            at org.jetbrains.jet.codegen.ExpressionCodegen.pushMethodArguments(ExpressionCodegen.java:1492)            at org.jetbrains.jet.codegen.ExpressionCodegen.pushMethodArguments(ExpressionCodegen.java:1545)            at org.jetbrains.jet.codegen.ExpressionCodegen.invokeMethodWithArguments(ExpressionCodegen.java:1359)            at org.jetbrains.jet.codegen.ExpressionCodegen.invokeFunction(ExpressionCodegen.java:1289)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitCallExpression(ExpressionCodegen.java:1255)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitCallExpression(ExpressionCodegen.java:58)            at org.jetbrains.jet.lang.psi.JetCallExpression.accept(JetCallExpression.java:45)            at org.jetbrains.jet.codegen.ExpressionCodegen.genQualified(ExpressionCodegen.java:147)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:161)            at org.jetbrains.jet.codegen.ExpressionCodegen.generateBlock(ExpressionCodegen.java:853)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitBlockExpression(ExpressionCodegen.java:722)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitBlockExpression(ExpressionCodegen.java:58)            at org.jetbrains.jet.lang.psi.JetBlockExpression.accept(JetBlockExpression.java:45)            at org.jetbrains.jet.codegen.ExpressionCodegen.genQualified(ExpressionCodegen.java:147)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:161)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:165)            at org.jetbrains.jet.codegen.ImplementationBodyCodegen.generateInitializers(ImplementationBodyCodegen.java:960)            at org.jetbrains.jet.codegen.ImplementationBodyCodegen.generatePrimaryConstructor(ImplementationBodyCodegen.java:693)            at org.jetbrains.jet.codegen.ImplementationBodyCodegen.generateSyntheticParts(ImplementationBodyCodegen.java:268)            at org.jetbrains.jet.codegen.ClassBodyCodegen.generate(ClassBodyCodegen.java:65)            at org.jetbrains.jet.codegen.ClassCodegen.generateImplementation(ClassCodegen.java:68)            at org.jetbrains.jet.codegen.ClassCodegen.generate(ClassCodegen.java:58)            at org.jetbrains.jet.codegen.NamespaceCodegen.generate(NamespaceCodegen.java:80)            at org.jetbrains.jet.codegen.GenerationState.generateNamespace(GenerationState.java:131)            at org.jetbrains.jet.codegen.GenerationState.compileCorrectFiles(GenerationState.java:114)            ... 32 more            Caused by: java.lang.NullPointerException            at org.jetbrains.jet.codegen.intrinsics.IntrinsicMethods.getIntrinsic(IntrinsicMethods.java:277)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitSimpleNameExpression(ExpressionCodegen.java:973)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitSimpleNameExpression(ExpressionCodegen.java:58)            at org.jetbrains.jet.lang.psi.JetSimpleNameExpression.accept(JetSimpleNameExpression.java:135)            at org.jetbrains.jet.codegen.ExpressionCodegen.genQualified(ExpressionCodegen.java:147)            ... 66 more

2

Is the main class name specified for the profile you are trying to launch?

3

I actually had this yesterday when trying to use Cedric's JCommander library, it looked like it was being triggered by using varargs and calling a Java method that takes ... varargs:

fun main(varargs args : String) {
  val options = Options()
  JCommander(options, args)
  …

JCommander’s constructor is (Object o, String… args).

I don’t know if this is the same issue tho…

4

If you have a project that could help us reproduce this, please attach it here. Thanks

5

The crash happens consistently whenever I run the following:

import kotlin.util.arrayList 

fun main(argv: Array<String>)
{
    var args = Args()
    Hello(args).parse(argv)
    println("Parsed")
}

class Args {


}


class Hello(varargs args: Any) {


  fun parse(argv: Array<String>) {

  println(“Parse”)

  }

}

Here is the exception again:

8:06:58 AM Throwable            java.lang.IllegalStateException: Internal error: (5,47) java.lang.NullPointerException            @IntrinsicMethods.java:277            at org.jetbrains.jet.codegen.CompilationErrorHandler$1.reportException(CompilationErrorHandler.java:27)            at org.jetbrains.jet.codegen.GenerationState.compileCorrectFiles(GenerationState.java:120)            at org.jetbrains.jet.compiler.CompileSession.generate(CompileSession.java:161)            at org.jetbrains.jet.compiler.CompileEnvironment.compileModule(CompileEnvironment.java:156)            at org.jetbrains.jet.compiler.CompileEnvironment.compileModuleScript(CompileEnvironment.java:107)            at org.jetbrains.jet.cli.KotlinCompiler.exec(KotlinCompiler.java:144)            at org.jetbrains.jet.cli.KotlinCompiler.exec(KotlinCompiler.java:90)            at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)            at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)            at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)            at java.lang.reflect.Method.invoke(Method.java:597)            at org.jetbrains.jet.plugin.compiler.JetCompiler.execInProcess(JetCompiler.java:276)            at org.jetbrains.jet.plugin.compiler.JetCompiler.runInProcess(JetCompiler.java:243)            at org.jetbrains.jet.plugin.compiler.JetCompiler.doCompile(JetCompiler.java:148)            at org.jetbrains.jet.plugin.compiler.JetCompiler.compile(JetCompiler.java:104)            at com.intellij.compiler.impl.CompileDriver.a(CompileDriver.java:1931)            at com.intellij.compiler.impl.CompileDriver.a(CompileDriver.java:1254)            at com.intellij.compiler.impl.CompileDriver.a(CompileDriver.java:986)            at com.intellij.compiler.impl.CompileDriver.a(CompileDriver.java:747)            at com.intellij.compiler.impl.CompileDriver.access$1000(CompileDriver.java:104)            at com.intellij.compiler.impl.CompileDriver$8.run(CompileDriver.java:665)            at com.intellij.compiler.progress.CompilerTask.run(CompilerTask.java:155)            at com.intellij.openapi.progress.impl.ProgressManagerImpl$TaskRunnable.run(ProgressManagerImpl.java:469)            at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:178)            at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)            at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:169)            at com.intellij.openapi.progress.impl.ProgressManagerImpl$8.run(ProgressManagerImpl.java:378)            at com.intellij.openapi.application.impl.ApplicationImpl$6.run(ApplicationImpl.java:434)            at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)            at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)            at java.util.concurrent.FutureTask.run(FutureTask.java:138)            at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)            at java.lang.Thread.run(Thread.java:680)            at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:145)            Caused by: Internal error: (5,47) java.lang.NullPointerException            @IntrinsicMethods.java:277            at org.jetbrains.jet.codegen.ExpressionCodegen.genQualified(ExpressionCodegen.java:156)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:161)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:165)            at org.jetbrains.jet.codegen.ExpressionCodegen.invokeAppend(ExpressionCodegen.java:2020)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitStringTemplateExpression(ExpressionCodegen.java:704)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitStringTemplateExpression(ExpressionCodegen.java:58)            at org.jetbrains.jet.lang.psi.JetStringTemplateExpression.accept(JetStringTemplateExpression.java:37)            at org.jetbrains.jet.codegen.ExpressionCodegen.genQualified(ExpressionCodegen.java:147)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:161)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:165)            at org.jetbrains.jet.codegen.ExpressionCodegen.pushMethodArguments(ExpressionCodegen.java:1492)            at org.jetbrains.jet.codegen.ExpressionCodegen.pushMethodArguments(ExpressionCodegen.java:1545)            at org.jetbrains.jet.codegen.ExpressionCodegen.invokeMethodWithArguments(ExpressionCodegen.java:1359)            at org.jetbrains.jet.codegen.ExpressionCodegen.invokeFunction(ExpressionCodegen.java:1289)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitCallExpression(ExpressionCodegen.java:1255)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitCallExpression(ExpressionCodegen.java:58)            at org.jetbrains.jet.lang.psi.JetCallExpression.accept(JetCallExpression.java:45)            at org.jetbrains.jet.codegen.ExpressionCodegen.genQualified(ExpressionCodegen.java:147)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:161)            at org.jetbrains.jet.codegen.ExpressionCodegen.generateBlock(ExpressionCodegen.java:853)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitBlockExpression(ExpressionCodegen.java:722)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitBlockExpression(ExpressionCodegen.java:58)            at org.jetbrains.jet.lang.psi.JetBlockExpression.accept(JetBlockExpression.java:45)            at org.jetbrains.jet.codegen.ExpressionCodegen.genQualified(ExpressionCodegen.java:147)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:161)            at org.jetbrains.jet.codegen.ExpressionCodegen.gen(ExpressionCodegen.java:165)            at org.jetbrains.jet.codegen.ImplementationBodyCodegen.generateInitializers(ImplementationBodyCodegen.java:960)            at org.jetbrains.jet.codegen.ImplementationBodyCodegen.generatePrimaryConstructor(ImplementationBodyCodegen.java:693)            at org.jetbrains.jet.codegen.ImplementationBodyCodegen.generateSyntheticParts(ImplementationBodyCodegen.java:268)            at org.jetbrains.jet.codegen.ClassBodyCodegen.generate(ClassBodyCodegen.java:65)            at org.jetbrains.jet.codegen.ClassCodegen.generateImplementation(ClassCodegen.java:68)            at org.jetbrains.jet.codegen.ClassCodegen.generate(ClassCodegen.java:58)            at org.jetbrains.jet.codegen.NamespaceCodegen.generate(NamespaceCodegen.java:80)            at org.jetbrains.jet.codegen.GenerationState.generateNamespace(GenerationState.java:131)            at org.jetbrains.jet.codegen.GenerationState.compileCorrectFiles(GenerationState.java:114)            ... 33 more            Caused by: java.lang.NullPointerException            at org.jetbrains.jet.codegen.intrinsics.IntrinsicMethods.getIntrinsic(IntrinsicMethods.java:277)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitSimpleNameExpression(ExpressionCodegen.java:973)            at org.jetbrains.jet.codegen.ExpressionCodegen.visitSimpleNameExpression(ExpressionCodegen.java:58)            at org.jetbrains.jet.lang.psi.JetSimpleNameExpression.accept(JetSimpleNameExpression.java:135)            at org.jetbrains.jet.codegen.ExpressionCodegen.genQualified(ExpressionCodegen.java:147)            ... 67 more

6

I'm not sure of the ticket off hand, but from memory, the problem lies in part in your signature: 

class Hello(varargs args: Any)

When you pass the argv: Array<String> to this constructor, you're passing a single argument which is an array, not an exploded list of arguments ( javac silently does this transformation for us ).  I believe there is new syntax coming in to explode the args, so that Hello(*argv) would explode the array to individual arguments.

Not sure I actually like the *arg syntax tho, kinda feels like “pointer to arg”.

7

Unless I'm missing something, I am not trying to pass an Array<String> to a varargs. Here is the code again:

``

    Hello(args).parse(argv)

args is a single object, so it matches varargs Any, and argv is an Array<String>, which matches the signature of parse().

–
Cédric

8

One mistake is: it's "vararg", not "varargs". And it's our fault that the IDE does not complain about it.

Issue: http://youtrack.jetbrains.com/issue/KT-1860

9

Can't reproduce the exception on the latest sources. It might be fixed already.

10

I'm still seeing the exception, even after correcting "varargs" to "vararg" (currently using 117.216).

I’m attaching my project.



kotlin4.jar (209 KB)

11

117.216 is the IDEA build. What version of Kotlin are you using (you can see it either in the Plugins dialog or in the compiler messages)?

12

Kotlin Compiler version 0.1.2090

13

It reproduces in 0.1.2090, and is fixed in the current sources. Consider updating to the current nightly build (see the instructions here: http://confluence.jetbrains.net/display/Kotlin/Getting+Started)

14

I believe I already am:

/uploads/kotlinlang/original/2X/2/20562f4e630b2a26797e4a0cd20a0912c0e9ea8c.png
/uploads/kotlinlang/original/2X/2/20562f4e630b2a26797e4a0cd20a0912c0e9ea8c.png691×105 14.6 KB

Shouldn’t this automatically get me the nightly builds of the compiler?

15

If you initially instealled the plugin from the central repo, you'll need to uninstall it and then install from the nightly repo in order to get nightly updates.