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  1. JDK
  2. JDK-8134490

Dead var statement evacuation incorrectly descends into nested functions

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    Details

    • Subcomponent:
    • Resolved In Build:
      b84
    • CPU:
      x86
    • OS:
      windows_8

      Backports

        Description

        FULL PRODUCT VERSION :
        java version "1.8.0_60"
        Java(TM) SE Runtime Environment (build 1.8.0_60-b27)
        Java HotSpot(TM) Client VM (build 25.60-b23, mixed mode)

        ADDITIONAL OS VERSION INFORMATION :
        Microsoft Windows [Version 6.3.9600]

        A DESCRIPTION OF THE PROBLEM :
        While executing a JavaScript code with nashorn executable (jjs.exe), an exception is thrown.

        Probably it caused by a dead code elimination while pre-processing the JavaScript file.

        This bug might be related to previously reported bug (reported by me few days ago, JI-9023716).

        STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
        save the attaches source code as program.js and run in windows command:
        jjs.exe program.js

        EXPECTED VERSUS ACTUAL BEHAVIOR :
        EXPECTED -
        in
        out
        ACTUAL -
        in
        Exception in thread "main" java.lang.ClassCastException: Cannot cast jdk.nashorn.internal.runtime.Undefined to jdk.nashorn.internal.runtime.ScriptFunction
                at java.lang.invoke.MethodHandleImpl.newClassCastException(Unknown Source)
                at java.lang.invoke.MethodHandleImpl.castReference(Unknown Source)
                at jdk.nashorn.internal.scripts.Script$code.:program(code.js:11)
                at jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:640)
                at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:228)
                at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:393)
                at jdk.nashorn.tools.Shell.apply(Shell.java:397)
                at jdk.nashorn.tools.Shell.runScripts(Shell.java:326)
                at jdk.nashorn.tools.Shell.run(Shell.java:172)
                at jdk.nashorn.tools.Shell.main(Shell.java:136)
                at jdk.nashorn.tools.Shell.main(Shell.java:112)

        ERROR MESSAGES/STACK TRACES THAT OCCUR :
        Exception in thread "main" java.lang.ClassCastException: Cannot cast jdk.nashorn.internal.runtime.Undefined to jdk.nashorn.internal.runtime.ScriptFunction
                at java.lang.invoke.MethodHandleImpl.newClassCastException(Unknown Source)
                at java.lang.invoke.MethodHandleImpl.castReference(Unknown Source)
                at jdk.nashorn.internal.scripts.Script$code.:program(code.js:11)
                at jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:640)
                at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:228)
                at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:393)
                at jdk.nashorn.tools.Shell.apply(Shell.java:397)
                at jdk.nashorn.tools.Shell.runScripts(Shell.java:326)
                at jdk.nashorn.tools.Shell.run(Shell.java:172)
                at jdk.nashorn.tools.Shell.main(Shell.java:136)
                at jdk.nashorn.tools.Shell.main(Shell.java:112)

        REPRODUCIBILITY :
        This bug can be reproduced always.

        ---------- BEGIN SOURCE ----------
        print("in");
        var v1;

        function f1()
        {
        v1 = 1;
        return true;
        (function () { var v1; })();
        }

        f1();
        print("out");
        ---------- END SOURCE ----------

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                Assignee:
                attila Attila Szegedi
                Reporter:
                webbuggrp Webbug Group
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                  Dates

                  Created:
                  Updated:
                  Resolved: