[es6] do not add caller/arguments to ES6 function definitions

test/webkit/fast/js/caller-property.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(
-'This tests for caller property in functions. Only functions that are called from inside of other functions and have a parent should have this property set. Tests return true when caller is found and false when the caller is null.'
-)
-function child()
-{
-    return (child.caller !== null);
-}
-
-function parent()
-{
-    return child();
-}
-
-var childHasCallerWhenExecutingGlobalCode = (child.caller !== null);
-var childHasCallerWhenCalledWithoutParent = child();
-var childHasCallerWhenCalledFromWithinParent = parent();
-
-shouldBe('childHasCallerWhenExecutingGlobalCode', 'false');
-shouldBe('childHasCallerWhenCalledWithoutParent', 'false');
-shouldBe('childHasCallerWhenCalledFromWithinParent', 'true')
-
-// The caller property should throw in strict mode, and a non-strict function cannot use caller to reach a strict caller (see ES5.1 15.3.5.4).
-function nonStrictCallee() { return nonStrictCallee.caller; }
-function strictCallee() { "use strict"; return strictCallee.caller; }
-function nonStrictCaller(x) { return x(); }
-function strictCaller(x) { "use strict"; return x(); }
-shouldBe("nonStrictCaller(nonStrictCallee)", "nonStrictCaller");
-shouldThrow("nonStrictCaller(strictCallee)", '"TypeError: Type error"');
-shouldThrow("strictCaller(nonStrictCallee)", '"TypeError: Function.caller used to retrieve strict caller"');
-shouldThrow("strictCaller(strictCallee)", '"TypeError: Type error"');
-
-// .caller within a bound function reaches the caller, ignoring the binding.
-var boundNonStrictCallee = nonStrictCallee.bind();
-var boundStrictCallee = strictCallee.bind();
-shouldBe("nonStrictCaller(boundNonStrictCallee)", "nonStrictCaller");
-shouldThrow("nonStrictCaller(boundStrictCallee)", '"TypeError: Type error"');
-shouldThrow("strictCaller(boundNonStrictCallee)", '"TypeError: Function.caller used to retrieve strict caller"');
-shouldThrow("strictCaller(boundStrictCallee)", '"TypeError: Type error"');
-
-// Check that .caller works (or throws) as expected, over an accessor call.
-function getFooGetter(x) { return Object.getOwnPropertyDescriptor(x, 'foo').get; }
-function getFooSetter(x) { return Object.getOwnPropertyDescriptor(x, 'foo').set; }
-var nonStrictAccessor = {
-    get foo() { return getFooGetter(nonStrictAccessor).caller; },
-    set foo(x) { if (getFooSetter(nonStrictAccessor).caller !==x) throw false; }
-};
-var strictAccessor = {
-    get foo() { "use strict"; return getFooGetter(strictAccessor).caller; },
-    set foo(x) { "use strict"; if (getFooSetter(strictAccessor).caller !==x) throw false; }
-};
-function nonStrictGetter(x) { return x.foo; }
-function nonStrictSetter(x) { x.foo = nonStrictSetter; return true; }
-function strictGetter(x) { "use strict"; return x.foo; }
-function strictSetter(x) { "use strict"; x.foo = nonStrictSetter; return true; }
-shouldBe("nonStrictGetter(nonStrictAccessor)", "nonStrictGetter");
-shouldBeTrue("nonStrictSetter(nonStrictAccessor)");
-shouldThrow("nonStrictGetter(strictAccessor)", '"TypeError: Type error"');
-shouldThrow("nonStrictSetter(strictAccessor)", '"TypeError: Type error"');
-shouldThrow("strictGetter(nonStrictAccessor)", '"TypeError: Function.caller used to retrieve strict caller"');
-shouldThrow("strictSetter(nonStrictAccessor)", '"TypeError: Function.caller used to retrieve strict caller"');
-shouldThrow("strictGetter(strictAccessor)", '"TypeError: Type error"');
-shouldThrow("strictSetter(strictAccessor)", '"TypeError: Type error"');