Ship ES2015 sloppy-mode const semantics

test/mjsunit/regress/regress-186.js

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+// 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;
@@ skipping 24 matching lines @@
   // 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);