Merge bleeding_edge 17696:18016.

test/mjsunit/regress/regress-3010.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * 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.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 // OWNER OR 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.
 
-// Test re-initializing existing field which is already being tracked as
-// having double representation.
 (function() {
-  function test1(a) {
-    return { x: 1.5, x: a };
-  };
+  function testOneSize(current_size) {
+    var eval_string = 'obj = {';
+    for (var current = 0; current <= current_size; ++current) {
+      eval_string += 'k' + current + ':' + current + ','
+    }
+    eval_string += '};';
+    eval(eval_string);
+    for (var i = 0; i <= current_size; i++) {
+      assertEquals(i, obj['k'+i]);
+    }
+    var current_number = 0;
+    for (var x in obj) {
+      assertEquals(current_number, obj[x]);
+      current_number++;
+    }
+  }
 
-  assertEquals({}, test1({}).x);
-})();
+  testOneSize(127);
+  testOneSize(128);
+  testOneSize(129);
 
-// Test initializing new field which follows an existing transition to a
-// map that tracks it as having double representation.
-(function() {
-  function test1(a) {
-    return { y: a };
-  };
+  testOneSize(255);
+  testOneSize(256);
+  testOneSize(257);
 
-  function test2(a) {
-    return { y: a };
-  };
+  testOneSize(511);
+  testOneSize(512);
+  testOneSize(513);
 
-  assertEquals(1.5, test1(1.5).y);
-  assertEquals({}, test2({}).y);
-})();
+  testOneSize(1023);
+  testOneSize(1024);
+  testOneSize(1025);
+
+  testOneSize(2047);
+  testOneSize(2048);
+  testOneSize(2049);
+}())