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  1. JDK
  2. JDK-8225771

Three nested lambdas break compiler

    Details

    • Subcomponent:
    • CPU:
      x86_64
    • OS:
      windows_10

      Description

      ADDITIONAL SYSTEM INFORMATION :
      Windows 10, JDK 1.8_212

      A DESCRIPTION OF THE PROBLEM :
      With nested lambda compiler crash with a NullPointerException!

      I did several attempts with different version(1.8.111, 1.8.152, 1.8.162, 1.8.211) and on different environment(Windows, Mac).

      I tried with CMD using mvn clean compile or via intelliJ using maven plugin.


      My stackoverflow question: https://stackoverflow.com/questions/56566180/java-8-nested-lambdas-break-compiler/56566397#56566397

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Create a 3 nested lambda and compile

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      Project compiled
      ACTUAL -
      An exception has occurred in the compiler (1.8.0_211). Please file a bug against the Java compiler via the Java bug reporting page (http://bugrepor
      t.java.com) after checking the Bug Database (http://bugs.java.com) for duplicates. Include your program and the following diagnostic in your report
      . Thank you.
      java.lang.NullPointerException
              at com.sun.tools.javac.jvm.Code.emitop0(Code.java:559)
              at com.sun.tools.javac.jvm.Items$SelfItem.load(Items.java:367)
              at com.sun.tools.javac.jvm.Gen.genArgs(Gen.java:966)
              at com.sun.tools.javac.jvm.Gen.visitApply(Gen.java:1842)
              at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
              at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:947)
              at com.sun.tools.javac.jvm.Gen.visitAssign(Gen.java:1982)
              at com.sun.tools.javac.tree.JCTree$JCAssign.accept(JCTree.java:1686)
              at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:947)
              at com.sun.tools.javac.jvm.Gen.visitExec(Gen.java:1781)
              at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1296)
              at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:737)
              at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:772)
              at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:758)
              at com.sun.tools.javac.jvm.Gen.genStats(Gen.java:809)
              at com.sun.tools.javac.jvm.Gen.visitBlock(Gen.java:1157)
              at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
              at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:737)
              at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:772)
              at com.sun.tools.javac.jvm.Gen.genMethod(Gen.java:1031)
              at com.sun.tools.javac.jvm.Gen.visitMethodDef(Gen.java:994)
              at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
              at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:737)
              at com.sun.tools.javac.jvm.Gen.genClass(Gen.java:2454)
              at com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:745)
              at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1572)
              at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1536)
              at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
              at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
              at com.sun.tools.javac.main.Main.compile(Main.java:523)
              at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
              at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
              at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:125)
              at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:171)
              at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:886)
              at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:129)
              at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
              at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
              at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154)
              at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146)
              at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
              at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
              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:309)
              at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:194)
              at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:107)
              at org.apache.maven.cli.MavenCli.execute(MavenCli.java:955)
              at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:290)
              at org.apache.maven.cli.MavenCli.main(MavenCli.java:194)
              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)

      ---------- BEGIN SOURCE ----------
      import java.util.function.Function;
      import java.util.function.Supplier;

      public class Test {

          public static Function<String, Supplier<String>> A = aVal -> new Supplier<String>() {

              @Override
              public String get() {
                  return B.apply(aVal).get();
              }

              private Function<String, Supplier<String>> B = bVal -> new Supplier<String>() {
                  @Override
                  public String get() {
                      return C.apply(bVal).get();
                  }

                  private Function<String, Supplier<String>> C = cVal -> new Supplier<String>() {
                      @Override
                      public String get() {
                          return cVal;
                      }
                  };
              };
          };
      }
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      Move the most nested lambda above, so removing one nested level.

      FREQUENCY : always


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            • Assignee:
              fmatte Fairoz Matte
              Reporter:
              webbuggrp Webbug Group
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              • Created:
                Updated:
                Resolved: