A64: Synchronize with r15545.

test/webkit/duplicate-param-gc-crash.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 // 1.  Redistributions of source code must retain the above copyright
 //     notice, this list of conditions and the following disclaimer.
 // 2.  Redistributions in binary form must reproduce the above copyright
 //     notice, this list of conditions and the following disclaimer in the
 //     documentation and/or other materials provided with the distribution.
 //
 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+'Tests to ensure that activations are built correctly in the face of duplicate parameter names and do not cause crashes.'
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function gc()
+{
+    if (this.GCController)
+        GCController.collect();
+    else
+        for (var i = 0; i < 10000; ++i) // Allocate a sufficient number of objects to force a GC.
+            ({});
+}
 
+function eatRegisters(param)
+{
+    if (param > 10)
+        return;
+    eatRegisters(param + 1);
+}
 
+function test1(a, b, b, b, b, b, b) {
+    return function() {
+        return a[0];
+    }
+}
+
+var test1Closure = test1(["success"]);
+
+var extra = test1("success");
+eatRegisters(0);
+gc();
+
+shouldBe('test1Closure()', '"success"');
+
+function test2(a, a, a, a, a, a, b) {
+    return function() {
+        return b[0];
+    }
+}
+
+var test2Closure = test2("success", "success", "success", "success", "success", "success", ["success"]);
+extra =  test2("success", "success", "success", "success", "success", "success", ["success"]);
+
+eatRegisters(0);
+gc();
+
+shouldBe('test2Closure()', '"success"');