Mercurial > jdk8-mips64-public > nashorn / changeset

     1.1 --- a/src/jdk/nashorn/api/scripting/ScriptObjectMirror.java	Wed Aug 21 13:39:40 2013 +0200
     1.2 +++ b/src/jdk/nashorn/api/scripting/ScriptObjectMirror.java	Wed Aug 21 17:28:53 2013 +0530
     1.3 @@ -374,6 +374,19 @@
     1.4      }
     1.5  
     1.6      /**
     1.7 +     * Set the __proto__ of this object.
     1.8 +     * @param proto new proto for this object
     1.9 +     */
    1.10 +    public void setProto(final Object proto) {
    1.11 +        inGlobal(new Callable<Void>() {
    1.12 +            @Override public Void call() {
    1.13 +                sobj.setProtoCheck(unwrap(proto, global));
    1.14 +                return null;
    1.15 +            }
    1.16 +        });
    1.17 +    }
    1.18 +
    1.19 +    /**
    1.20       * ECMA 8.12.1 [[GetOwnProperty]] (P)
    1.21       *
    1.22       * @param key property key

     2.1 --- a/src/jdk/nashorn/internal/objects/NativeObject.java	Wed Aug 21 13:39:40 2013 +0200
     2.2 +++ b/src/jdk/nashorn/internal/objects/NativeObject.java	Wed Aug 21 17:28:53 2013 +0530
     2.3 @@ -125,6 +125,28 @@
     2.4      }
     2.5  
     2.6      /**
     2.7 +     * Nashorn extension: Object.setPrototypeOf ( O, proto )
     2.8 +     * Also found in ES6 draft specification.
     2.9 +     *
    2.10 +     * @param  self self reference
    2.11 +     * @param  obj object to set prototype for
    2.12 +     * @param  proto prototype object to be used
    2.13 +     * @return object whose prototype is set
    2.14 +     */
    2.15 +    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
    2.16 +    public static Object setPrototypeOf(final Object self, final Object obj, final Object proto) {
    2.17 +        if (obj instanceof ScriptObject) {
    2.18 +            ((ScriptObject)obj).setProtoCheck(proto);
    2.19 +            return obj;
    2.20 +        } else if (obj instanceof ScriptObjectMirror) {
    2.21 +            ((ScriptObjectMirror)obj).setProto(proto);
    2.22 +            return obj;
    2.23 +        }
    2.24 +
    2.25 +        throw notAnObject(obj);
    2.26 +    }
    2.27 +
    2.28 +    /**
    2.29       * ECMA 15.2.3.3 Object.getOwnPropertyDescriptor ( O, P )
    2.30       *
    2.31       * @param self  self reference
    2.32 @@ -184,7 +206,7 @@
    2.33          // FIXME: should we create a proper object with correct number of
    2.34          // properties?
    2.35          final ScriptObject newObj = Global.newEmptyInstance();
    2.36 -        newObj.setProtoCheck(proto);
    2.37 +        newObj.setProto((ScriptObject)proto);
    2.38          if (props != UNDEFINED) {
    2.39              NativeObject.defineProperties(self, newObj, props);
    2.40          }

     3.1 --- a/src/jdk/nashorn/internal/runtime/PropertyListener.java	Wed Aug 21 13:39:40 2013 +0200
     3.2 +++ b/src/jdk/nashorn/internal/runtime/PropertyListener.java	Wed Aug 21 17:28:53 2013 +0530
     3.3 @@ -54,4 +54,13 @@
     3.4       *
     3.5       */
     3.6      public void propertyModified(ScriptObject object, Property oldProp, Property newProp);
     3.7 +
     3.8 +    /**
     3.9 +     * Given object's __proto__ has changed.
    3.10 +     *
    3.11 +     * @param object object whose __proto__ has changed.
    3.12 +     * @param oldProto old __proto__
    3.13 +     * @param newProto new __proto__
    3.14 +     */
    3.15 +    public void protoChanged(ScriptObject object, ScriptObject oldProto, ScriptObject newProto);
    3.16  }

     4.1 --- a/src/jdk/nashorn/internal/runtime/PropertyListenerManager.java	Wed Aug 21 13:39:40 2013 +0200
     4.2 +++ b/src/jdk/nashorn/internal/runtime/PropertyListenerManager.java	Wed Aug 21 17:28:53 2013 +0530
     4.3 @@ -140,6 +140,21 @@
     4.4          }
     4.5      }
     4.6  
     4.7 +    /**
     4.8 +     * This method can be called to notify __proto__ modification to this object's listeners.
     4.9 +     *
    4.10 +     * @param object The ScriptObject whose __proto__ was changed.
    4.11 +     * @param oldProto old __proto__
    4.12 +     * @param newProto new __proto__
    4.13 +     */
    4.14 +    protected synchronized final void notifyProtoChanged(final ScriptObject object, final ScriptObject oldProto, final ScriptObject newProto) {
    4.15 +        if (listeners != null) {
    4.16 +            for (PropertyListener listener : listeners.keySet()) {
    4.17 +                listener.protoChanged(object, oldProto, newProto);
    4.18 +            }
    4.19 +        }
    4.20 +    }
    4.21 +
    4.22      // PropertyListener methods
    4.23  
    4.24      @Override
    4.25 @@ -156,4 +171,9 @@
    4.26      public final void propertyModified(final ScriptObject object, final Property oldProp, final Property newProp) {
    4.27          notifyPropertyModified(object, oldProp, newProp);
    4.28      }
    4.29 +
    4.30 +    @Override
    4.31 +    public final void protoChanged(final ScriptObject object, final ScriptObject oldProto, final ScriptObject newProto) {
    4.32 +        notifyProtoChanged(object, oldProto, newProto);
    4.33 +    }
    4.34  }

     5.1 --- a/src/jdk/nashorn/internal/runtime/PropertyMap.java	Wed Aug 21 13:39:40 2013 +0200
     5.2 +++ b/src/jdk/nashorn/internal/runtime/PropertyMap.java	Wed Aug 21 17:28:53 2013 +0530
     5.3 @@ -230,7 +230,7 @@
     5.4      }
     5.5  
     5.6      /**
     5.7 -     * Indicate that a prototype property hash changed.
     5.8 +     * Indicate that a prototype property has changed.
     5.9       *
    5.10       * @param property {@link Property} to invalidate.
    5.11       */
    5.12 @@ -251,6 +251,18 @@
    5.13      }
    5.14  
    5.15      /**
    5.16 +     * Indicate that proto itself has changed in hierachy somewhere.
    5.17 +     */
    5.18 +    private void invalidateAllProtoGetSwitchPoints() {
    5.19 +        assert !isShared() : "proto invalidation on a shared PropertyMap";
    5.20 +
    5.21 +        if (protoGetSwitches != null) {
    5.22 +            final Collection<SwitchPoint> sws = protoGetSwitches.values();
    5.23 +            SwitchPoint.invalidateAll(sws.toArray(new SwitchPoint[sws.size()]));
    5.24 +        }
    5.25 +    }
    5.26 +
    5.27 +    /**
    5.28       * Add a property to the map, re-binding its getters and setters,
    5.29       * if available, to a given receiver. This is typically the global scope. See
    5.30       * {@link ScriptObject#addBoundProperties(ScriptObject)}
    5.31 @@ -878,6 +890,15 @@
    5.32          invalidateProtoGetSwitchPoint(oldProp);
    5.33      }
    5.34  
    5.35 +    @Override
    5.36 +    public void protoChanged(final ScriptObject object, final ScriptObject oldProto, final ScriptObject newProto) {
    5.37 +        // We may walk and invalidate SwitchPoints for properties inherited
    5.38 +        // from 'object' or it's old proto chain. But, it may not be worth it.
    5.39 +        // For example, a new proto may have a user defined getter/setter for
    5.40 +        // a data property down the chain. So, invalidating all is better.
    5.41 +        invalidateAllProtoGetSwitchPoints();
    5.42 +    }
    5.43 +
    5.44      /*
    5.45       * Debugging and statistics.
    5.46       */

     6.1 --- a/src/jdk/nashorn/internal/runtime/ScriptEnvironment.java	Wed Aug 21 13:39:40 2013 +0200
     6.2 +++ b/src/jdk/nashorn/internal/runtime/ScriptEnvironment.java	Wed Aug 21 17:28:53 2013 +0530
     6.3 @@ -128,9 +128,6 @@
     6.4      /** Do not support typed arrays. */
     6.5      public final boolean _no_typed_arrays;
     6.6  
     6.7 -    /** Package to which generated class files are added */
     6.8 -    public final String  _package;
     6.9 -
    6.10      /** Only parse the source code, do not compile */
    6.11      public final boolean _parse_only;
    6.12  
    6.13 @@ -216,7 +213,6 @@
    6.14          _no_java              = options.getBoolean("no.java");
    6.15          _no_syntax_extensions = options.getBoolean("no.syntax.extensions");
    6.16          _no_typed_arrays      = options.getBoolean("no.typed.arrays");
    6.17 -        _package              = options.getString("package");
    6.18          _parse_only           = options.getBoolean("parse.only");
    6.19          _print_ast            = options.getBoolean("print.ast");
    6.20          _print_lower_ast      = options.getBoolean("print.lower.ast");

     7.1 --- a/src/jdk/nashorn/internal/runtime/ScriptObject.java	Wed Aug 21 13:39:40 2013 +0200
     7.2 +++ b/src/jdk/nashorn/internal/runtime/ScriptObject.java	Wed Aug 21 17:28:53 2013 +0530
     7.3 @@ -1129,6 +1129,9 @@
     7.4          proto = newProto;
     7.5  
     7.6          if (isPrototype()) {
     7.7 +            // tell listeners that my __proto__ has been changed
     7.8 +            notifyProtoChanged(this, oldProto, newProto);
     7.9 +
    7.10              if (oldProto != null) {
    7.11                  oldProto.removePropertyListener(this);
    7.12              }
    7.13 @@ -1144,7 +1147,19 @@
    7.14       * @param newProto Prototype to set.
    7.15       */
    7.16      public final void setProtoCheck(final Object newProto) {
    7.17 +        if (!isExtensible()) {
    7.18 +            throw typeError("__proto__.set.non.extensible", ScriptRuntime.safeToString(this));
    7.19 +        }
    7.20 +
    7.21          if (newProto == null || newProto instanceof ScriptObject) {
    7.22 +            // check for circularity
    7.23 +            ScriptObject proto = (ScriptObject)newProto;
    7.24 +            while (proto != null) {
    7.25 +                if (proto == this) {
    7.26 +                    throw typeError("circular.__proto__.set", ScriptRuntime.safeToString(this));
    7.27 +                }
    7.28 +                proto = proto.getProto();
    7.29 +            }
    7.30              setProto((ScriptObject)newProto);
    7.31          } else {
    7.32              final ScriptObject global = Context.getGlobalTrusted();

     8.1 --- a/src/jdk/nashorn/internal/runtime/resources/Messages.properties	Wed Aug 21 13:39:40 2013 +0200
     8.2 +++ b/src/jdk/nashorn/internal/runtime/resources/Messages.properties	Wed Aug 21 17:28:53 2013 +0530
     8.3 @@ -94,6 +94,8 @@
     8.4  type.error.cant.redefine.property=Cannot redefine property "{0}" of {1}
     8.5  type.error.property.not.writable="{0}" is not a writable property of {1}
     8.6  type.error.object.non.extensible=Cannot add new property "{0}" to non-extensible {1}
     8.7 +type.error.__proto__.set.non.extensible=Cannot set __proto__ of non-extensible {0}
     8.8 +type.error.circular.__proto__.set=Cannot create__proto__ cycle for {0}
     8.9  
    8.10  # miscellaneous
    8.11  type.error.regex.cant.supply.flags=Cannot supply flags when constructing one RegExp from another

     9.1 --- a/src/jdk/nashorn/internal/runtime/resources/Options.properties	Wed Aug 21 13:39:40 2013 +0200
     9.2 +++ b/src/jdk/nashorn/internal/runtime/resources/Options.properties	Wed Aug 21 17:28:53 2013 +0530
     9.3 @@ -216,15 +216,6 @@
     9.4      default=false                                  \
     9.5  }
     9.6  
     9.7 -nashorn.option.package = {                                     \
     9.8 -    name="--package",                                          \
     9.9 -    is_undocumented=true,                                      \
    9.10 -    desc="Package to which generated .class files are added.", \
    9.11 -    params="<package>",                                        \
    9.12 -    type=String,                                               \
    9.13 -    default=""                                                 \
    9.14 -}
    9.15 -
    9.16  nashorn.option.parse.only = {       \
    9.17      name="--parse-only",            \
    9.18      is_undocumented=true,           \

    10.1 --- a/src/jdk/nashorn/internal/runtime/resources/mozilla_compat.js	Wed Aug 21 13:39:40 2013 +0200
    10.2 +++ b/src/jdk/nashorn/internal/runtime/resources/mozilla_compat.js	Wed Aug 21 17:28:53 2013 +0530
    10.3 @@ -144,7 +144,7 @@
    10.4          return Object.getPrototypeOf(this);
    10.5      },
    10.6      set: function(x) {
    10.7 -        throw new TypeError("__proto__ set not supported");
    10.8 +        Object.setPrototypeOf(this, x);
    10.9      }
   10.10  });
   10.11  

    11.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    11.2 +++ b/test/script/basic/JDK-8023368.js	Wed Aug 21 17:28:53 2013 +0530
    11.3 @@ -0,0 +1,73 @@
    11.4 +/*
    11.5 + * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
    11.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    11.7 + *
    11.8 + * This code is free software; you can redistribute it and/or modify it
    11.9 + * under the terms of the GNU General Public License version 2 only, as
   11.10 + * published by the Free Software Foundation.
   11.11 + *
   11.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
   11.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   11.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   11.15 + * version 2 for more details (a copy is included in the LICENSE file that
   11.16 + * accompanied this code).
   11.17 + *
   11.18 + * You should have received a copy of the GNU General Public License version
   11.19 + * 2 along with this work; if not, write to the Free Software Foundation,
   11.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   11.21 + *
   11.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   11.23 + * or visit www.oracle.com if you need additional information or have any
   11.24 + * questions.
   11.25 + */
   11.26 +
   11.27 +/**
   11.28 + * JDK-8023368: Instance __proto__ property should exist and be writable.
   11.29 + *
   11.30 + * @test
   11.31 + * @run
   11.32 + */
   11.33 +
   11.34 +load("nashorn:mozilla_compat.js");
   11.35 +
   11.36 +// function to force same callsites
   11.37 +function check(obj) {
   11.38 +    print(obj.func());
   11.39 +    print(obj.x);
   11.40 +    print(obj.toString());
   11.41 +}
   11.42 +
   11.43 +function Func() {
   11.44 +}
   11.45 +
   11.46 +Func.prototype.func = function() {
   11.47 +    return "Func.prototype.func";
   11.48 +}
   11.49 +
   11.50 +Func.prototype.x = "hello";
   11.51 +
   11.52 +var obj = new Func();
   11.53 +var obj2 = Object.create(obj);
   11.54 +
   11.55 +// check direct and indirect __proto__ change
   11.56 +check(obj);
   11.57 +check(obj2);
   11.58 +obj.__proto__ = {
   11.59 +   func: function() {
   11.60 +        return "obj.__proto__.func @ " + __LINE__;
   11.61 +   },
   11.62 +   x: 344
   11.63 +};
   11.64 +
   11.65 +check(obj);
   11.66 +check(obj2);
   11.67 +
   11.68 +// check indirect (1 and 2 levels) __proto__ function change
   11.69 +obj.__proto__.__proto__ = {
   11.70 +    toString: function() {
   11.71 +        return "new object.toString";
   11.72 +    }
   11.73 +};
   11.74 +
   11.75 +check(obj);
   11.76 +check(obj2);

    12.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    12.2 +++ b/test/script/basic/JDK-8023368.js.EXPECTED	Wed Aug 21 17:28:53 2013 +0530
    12.3 @@ -0,0 +1,18 @@
    12.4 +Func.prototype.func
    12.5 +hello
    12.6 +[object Object]
    12.7 +Func.prototype.func
    12.8 +hello
    12.9 +[object Object]
   12.10 +obj.__proto__.func @ 57
   12.11 +344
   12.12 +[object Object]
   12.13 +obj.__proto__.func @ 57
   12.14 +344
   12.15 +[object Object]
   12.16 +obj.__proto__.func @ 57
   12.17 +344
   12.18 +new object.toString
   12.19 +obj.__proto__.func @ 57
   12.20 +344
   12.21 +new object.toString

    13.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    13.2 +++ b/test/script/basic/JDK-8023368_2.js	Wed Aug 21 17:28:53 2013 +0530
    13.3 @@ -0,0 +1,73 @@
    13.4 +/*
    13.5 + * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
    13.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    13.7 + *
    13.8 + * This code is free software; you can redistribute it and/or modify it
    13.9 + * under the terms of the GNU General Public License version 2 only, as
   13.10 + * published by the Free Software Foundation.
   13.11 + *
   13.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
   13.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   13.15 + * version 2 for more details (a copy is included in the LICENSE file that
   13.16 + * accompanied this code).
   13.17 + *
   13.18 + * You should have received a copy of the GNU General Public License version
   13.19 + * 2 along with this work; if not, write to the Free Software Foundation,
   13.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   13.21 + *
   13.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   13.23 + * or visit www.oracle.com if you need additional information or have any
   13.24 + * questions.
   13.25 + */
   13.26 +
   13.27 +/**
   13.28 + * JDK-8023368: Instance __proto__ property should exist and be writable.
   13.29 + *
   13.30 + * @test
   13.31 + * @run
   13.32 + */
   13.33 +
   13.34 +// check Object.setPrototypeOf extension rather than using __proto__
   13.35 +
   13.36 +// function to force same callsites
   13.37 +function check(obj) {
   13.38 +    print(obj.func());
   13.39 +    print(obj.x);
   13.40 +    print(obj.toString());
   13.41 +}
   13.42 +
   13.43 +function Func() {
   13.44 +}
   13.45 +
   13.46 +Func.prototype.func = function() {
   13.47 +    return "Func.prototype.func";
   13.48 +}
   13.49 +
   13.50 +Func.prototype.x = "hello";
   13.51 +
   13.52 +var obj = new Func();
   13.53 +var obj2 = Object.create(obj);
   13.54 +
   13.55 +// check direct and indirect __proto__ change
   13.56 +check(obj);
   13.57 +check(obj2);
   13.58 +Object.setPrototypeOf(obj, {
   13.59 +   func: function() {
   13.60 +        return "obj.__proto__.func @ " + __LINE__;
   13.61 +   },
   13.62 +   x: 344
   13.63 +});
   13.64 +
   13.65 +check(obj);
   13.66 +check(obj2);
   13.67 +
   13.68 +// check indirect (1 and 2 levels) __proto__ function change
   13.69 +Object.setPrototypeOf(Object.getPrototypeOf(obj), {
   13.70 +    toString: function() {
   13.71 +        return "new object.toString";
   13.72 +    }
   13.73 +});
   13.74 +
   13.75 +check(obj);
   13.76 +check(obj2);

    14.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    14.2 +++ b/test/script/basic/JDK-8023368_2.js.EXPECTED	Wed Aug 21 17:28:53 2013 +0530
    14.3 @@ -0,0 +1,18 @@
    14.4 +Func.prototype.func
    14.5 +hello
    14.6 +[object Object]
    14.7 +Func.prototype.func
    14.8 +hello
    14.9 +[object Object]
   14.10 +obj.__proto__.func @ 57
   14.11 +344
   14.12 +[object Object]
   14.13 +obj.__proto__.func @ 57
   14.14 +344
   14.15 +[object Object]
   14.16 +obj.__proto__.func @ 57
   14.17 +344
   14.18 +new object.toString
   14.19 +obj.__proto__.func @ 57
   14.20 +344
   14.21 +new object.toString

    15.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    15.2 +++ b/test/script/basic/circular_proto.js	Wed Aug 21 17:28:53 2013 +0530
    15.3 @@ -0,0 +1,46 @@
    15.4 +/*
    15.5 + * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
    15.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    15.7 + *
    15.8 + * This code is free software; you can redistribute it and/or modify it
    15.9 + * under the terms of the GNU General Public License version 2 only, as
   15.10 + * published by the Free Software Foundation.
   15.11 + *
   15.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
   15.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   15.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   15.15 + * version 2 for more details (a copy is included in the LICENSE file that
   15.16 + * accompanied this code).
   15.17 + *
   15.18 + * You should have received a copy of the GNU General Public License version
   15.19 + * 2 along with this work; if not, write to the Free Software Foundation,
   15.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   15.21 + *
   15.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   15.23 + * or visit www.oracle.com if you need additional information or have any
   15.24 + * questions.
   15.25 + */
   15.26 +
   15.27 +/**
   15.28 + * JDK-8023368: Instance __proto__ property should exist and be writable.
   15.29 + *
   15.30 + * @test
   15.31 + * @run
   15.32 + */
   15.33 +
   15.34 +// check that we cannot create __proto__ cycle
   15.35 +load("nashorn:mozilla_compat.js");
   15.36 +
   15.37 +var obj = {};
   15.38 +var obj2 = Object.create(obj);
   15.39 +
   15.40 +// attempt to create __proto__ cycle
   15.41 +try {
   15.42 +    obj.__proto__ = obj2;
   15.43 +    fail("Should have thrown TypeError");
   15.44 +} catch (e) {
   15.45 +    if (! (e instanceof TypeError)) {
   15.46 +        fail("Expected TypeError, got " + e);
   15.47 +    }
   15.48 +    print(e);
   15.49 +}

    16.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    16.2 +++ b/test/script/basic/circular_proto.js.EXPECTED	Wed Aug 21 17:28:53 2013 +0530
    16.3 @@ -0,0 +1,1 @@
    16.4 +TypeError: Cannot create__proto__ cycle for [object Object]

    17.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    17.2 +++ b/test/script/basic/mirror_proto_assign.js	Wed Aug 21 17:28:53 2013 +0530
    17.3 @@ -0,0 +1,52 @@
    17.4 +/*
    17.5 + * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
    17.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    17.7 + *
    17.8 + * This code is free software; you can redistribute it and/or modify it
    17.9 + * under the terms of the GNU General Public License version 2 only, as
   17.10 + * published by the Free Software Foundation.
   17.11 + *
   17.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
   17.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   17.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   17.15 + * version 2 for more details (a copy is included in the LICENSE file that
   17.16 + * accompanied this code).
   17.17 + *
   17.18 + * You should have received a copy of the GNU General Public License version
   17.19 + * 2 along with this work; if not, write to the Free Software Foundation,
   17.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   17.21 + *
   17.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   17.23 + * or visit www.oracle.com if you need additional information or have any
   17.24 + * questions.
   17.25 + */
   17.26 +
   17.27 +/**
   17.28 + * JDK-8023368: Instance __proto__ property should exist and be writable.
   17.29 + *
   17.30 + * @test
   17.31 + * @run
   17.32 + */
   17.33 +
   17.34 +// check that Object.setPrototypeOf works for mirror objects as well.
   17.35 +
   17.36 +var global = loadWithNewGlobal({
   17.37 +    name: "test",
   17.38 +    script: "var obj = {}; this"
   17.39 +});
   17.40 +
   17.41 +var proto = global.eval("({ foo: 323 })");
   17.42 +
   17.43 +Object.setPrototypeOf(global.obj, proto);
   17.44 +
   17.45 +function func(obj) {
   17.46 +    // check proto inherited value
   17.47 +    print("obj.foo = " + obj.foo);
   17.48 +}
   17.49 +
   17.50 +func(global.obj);
   17.51 +
   17.52 +var newProto = global.eval("({ foo: 'hello' })");
   17.53 +Object.setPrototypeOf(global.obj, newProto);
   17.54 +
   17.55 +func(global.obj);

    18.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    18.2 +++ b/test/script/basic/mirror_proto_assign.js.EXPECTED	Wed Aug 21 17:28:53 2013 +0530
    18.3 @@ -0,0 +1,2 @@
    18.4 +obj.foo = 323
    18.5 +obj.foo = hello

    19.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    19.2 +++ b/test/script/basic/nonextensible_proto_assign.js	Wed Aug 21 17:28:53 2013 +0530
    19.3 @@ -0,0 +1,44 @@
    19.4 +/*
    19.5 + * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
    19.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    19.7 + *
    19.8 + * This code is free software; you can redistribute it and/or modify it
    19.9 + * under the terms of the GNU General Public License version 2 only, as
   19.10 + * published by the Free Software Foundation.
   19.11 + *
   19.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
   19.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   19.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   19.15 + * version 2 for more details (a copy is included in the LICENSE file that
   19.16 + * accompanied this code).
   19.17 + *
   19.18 + * You should have received a copy of the GNU General Public License version
   19.19 + * 2 along with this work; if not, write to the Free Software Foundation,
   19.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   19.21 + *
   19.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   19.23 + * or visit www.oracle.com if you need additional information or have any
   19.24 + * questions.
   19.25 + */
   19.26 +
   19.27 +/**
   19.28 + * JDK-8023368: Instance __proto__ property should exist and be writable.
   19.29 + *
   19.30 + * @test
   19.31 + * @run
   19.32 + */
   19.33 +
   19.34 +load("nashorn:mozilla_compat.js")
   19.35 +
   19.36 +// check that we cannot assign to __proto__ of a non-extensible object
   19.37 +try {
   19.38 +    var obj = {}
   19.39 +    Object.preventExtensions(obj);
   19.40 +    obj.__proto__ = { };
   19.41 +    fail("Should have thrown TypeError");
   19.42 +} catch (e) {
   19.43 +    if (! (e instanceof TypeError)) {
   19.44 +        fail("Expected TypeError, got " + e);
   19.45 +    }
   19.46 +    print(e);
   19.47 +}

    20.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    20.2 +++ b/test/script/basic/nonextensible_proto_assign.js.EXPECTED	Wed Aug 21 17:28:53 2013 +0530
    20.3 @@ -0,0 +1,1 @@
    20.4 +TypeError: Cannot set __proto__ of non-extensible [object Object]