Remove support for legacy const, part 1

test/mjsunit/regress/regress-186.js

 // Copyright 2009 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.
 
-// Flags: --legacy-const
-
 // Make sure that eval can introduce a local variable called __proto__.
 // See http://code.google.com/p/v8/issues/detail?id=186
 
 var setterCalled = false;
 
 var o = {};
 o.__defineSetter__("x", function() { setterCalled = true; });
 
 function runTest(test) {
   setterCalled = false;
   test();
 }
 
 function testLocal() {
   // Add property called __proto__ to the extension object.
   eval("var __proto__ = o");
   // Check that the extension object's prototype did not change.
   eval("var x = 27");
   assertFalse(setterCalled, "prototype of extension object changed");
   assertEquals(o, eval("__proto__"));
 }
 
-function testConstLocal() {
-  // Add const property called __proto__ to the extension object.
-  eval("const __proto__ = o");
-  // Check that the extension object's prototype did not change.
-  eval("var x = 27");
-  assertFalse(setterCalled, "prototype of extension object changed");
-  assertEquals(o, eval("__proto__"));
-}
-
 function testGlobal() {
   // Assign to the global __proto__ property.
   eval("__proto__ = o");
   // Check that the prototype of the global object changed.
   eval("x = 27");
   assertTrue(setterCalled, "prototype of global object did not change");
   setterCalled = false;
   assertEquals(o, eval("__proto__"));
 }
 
 runTest(testLocal);
-runTest(testConstLocal);
 runTest(testGlobal);