Remove runtime flags for sloppy mode block scoping features

test/mjsunit/harmony/block-sloppy-function.js

-// Copyright 2015 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-sloppy --harmony-sloppy-let
-// Flags: --harmony-sloppy-function
-
-// Test Annex B 3.3 semantics for functions declared in blocks in sloppy mode.
-// http://www.ecma-international.org/ecma-262/6.0/#sec-block-level-function-declarations-web-legacy-compatibility-semantics
-
-(function overridingLocalFunction() {
-  var x = [];
-  assertEquals('function', typeof f);
-  function f() {
-    x.push(1);
-  }
-  f();
-  {
-    f();
-    function f() {
-      x.push(2);
-    }
-    f();
-  }
-  f();
-  {
-    f();
-    function f() {
-      x.push(3);
-    }
-    f();
-  }
-  f();
-  assertArrayEquals([1, 2, 2, 2, 3, 3, 3], x);
-})();
-
-(function newFunctionBinding() {
-  var x = [];
-  assertEquals('undefined', typeof f);
-  {
-    f();
-    function f() {
-      x.push(2);
-    }
-    f();
-  }
-  f();
-  {
-    f();
-    function f() {
-      x.push(3);
-    }
-    f();
-  }
-  f();
-  assertArrayEquals([2, 2, 2, 3, 3, 3], x);
-})();
-
-(function shadowingLetDoesntBind() {
-  let f = 1;
-  assertEquals(1, f);
-  {
-    let y = 3;
-    function f() {
-      y = 2;
-    }
-    f();
-    assertEquals(2, y);
-  }
-  assertEquals(1, f);
-})();
-
-(function shadowingClassDoesntBind() {
-  class f { }
-  assertEquals('class f { }', f.toString());
-  {
-    let y = 3;
-    function f() {
-      y = 2;
-    }
-    f();
-    assertEquals(2, y);
-  }
-  assertEquals('class f { }', f.toString());
-})();
-
-(function shadowingConstDoesntBind() {
-  const f = 1;
-  assertEquals(1, f);
-  {
-    let y = 3;
-    function f() {
-      y = 2;
-    }
-    f();
-    assertEquals(2, y);
-  }
-  assertEquals(1, f);
-})();
-
-(function shadowingVarBinds() {
-  var f = 1;
-  assertEquals(1, f);
-  {
-    let y = 3;
-    function f() {
-      y = 2;
-    }
-    f();
-    assertEquals(2, y);
-  }
-  assertEquals('function', typeof f);
-})();
-
-(function conditional() {
-  if (true) {
-    function f() { return 1; }
-  } else {
-    function f() { return 2; }
-  }
-  assertEquals(1, f());
-
-  if (false) {
-    function g() { return 1; }
-  } else {
-    function g() { return 2; }
-  }
-  assertEquals(2, g());
-})();
-
-(function skipExecution() {
-  {
-    function f() { return 1; }
-  }
-  assertEquals(1, f());
-  {
-    function f() { return 2; }
-  }
-  assertEquals(2, f());
-  L: {
-    assertEquals(3, f());
-    break L;
-    function f() { return 3; }
-  }
-  assertEquals(2, f());
-})();
-
-// Test that shadowing arguments is fine
-(function shadowArguments(x) {
-  assertArrayEquals([1], arguments);
-  {
-    assertEquals('function', typeof arguments);
-    function arguments() {}
-    assertEquals('function', typeof arguments);
-  }
-  assertEquals('function', typeof arguments);
-})(1);
-
-// Shadow function parameter
-(function shadowParameter(x) {
-  assertEquals(1, x);
-  {
-    function x() {}
-  }
-  assertEquals('function', typeof x);
-})(1);
-
-// Shadow function parameter
-(function shadowDefaultParameter(x = 0) {
-  assertEquals(1, x);
-  {
-    function x() {}
-  }
-  // TODO(littledan): Once destructured parameters are no longer
-  // let-bound, enable this assertion. This is the core of the test.
-  // assertEquals('function', typeof x);
-})(1);
-
-(function shadowRestParameter(...x) {
-  assertArrayEquals([1], x);
-  {
-    function x() {}
-  }
-  // TODO(littledan): Once destructured parameters are no longer
-  // let-bound, enable this assertion. This is the core of the test.
-  // assertEquals('function', typeof x);
-})(1);
-
-assertThrows(function notInDefaultScope(x = y) {
-  {
-    function y() {}
-  }
-  assertEquals('function', typeof y);
-  assertEquals(x, undefined);
-}, ReferenceError);
-
-// Test that hoisting from blocks does happen in global scope
-function globalHoisted() { return 0; }
-{
-  function globalHoisted() { return 1; }
-}
-assertEquals(1, globalHoisted());
-
-// Also happens when not previously defined
-assertEquals(undefined, globalUndefinedHoisted);
-{
-  function globalUndefinedHoisted() { return 1; }
-}
-assertEquals(1, globalUndefinedHoisted());
-var globalUndefinedHoistedDescriptor =
-    Object.getOwnPropertyDescriptor(this, "globalUndefinedHoisted");
-assertFalse(globalUndefinedHoistedDescriptor.configurable);
-assertTrue(globalUndefinedHoistedDescriptor.writable);
-assertTrue(globalUndefinedHoistedDescriptor.enumerable);
-assertEquals(1, globalUndefinedHoistedDescriptor.value());
-
-// When a function property is hoisted, it should be
-// made enumerable.
-// BUG(v8:4451)
-Object.defineProperty(this, "globalNonEnumerable", {
-  value: false,
-  configurable: true,
-  writable: true,
-  enumerable: false
-});
-eval("{function globalNonEnumerable() { return 1; }}");
-var globalNonEnumerableDescriptor
-    = Object.getOwnPropertyDescriptor(this, "globalNonEnumerable");
-// BUG(v8:4451): Should be made non-configurable
-assertTrue(globalNonEnumerableDescriptor.configurable);
-assertTrue(globalNonEnumerableDescriptor.writable);
-// BUG(v8:4451): Should be made enumerable
-assertFalse(globalNonEnumerableDescriptor.enumerable);
-assertEquals(1, globalNonEnumerableDescriptor.value());
-
-// When a function property is hoisted, it should be overwritten and
-// made writable and overwritten, even if the property was non-writable.
-Object.defineProperty(this, "globalNonWritable", {
-  value: false,
-  configurable: true,
-  writable: false,
-  enumerable: true
-});
-eval("{function globalNonWritable() { return 1; }}");
-var globalNonWritableDescriptor
-    = Object.getOwnPropertyDescriptor(this, "globalNonWritable");
-// BUG(v8:4451): Should be made non-configurable
-assertTrue(globalNonWritableDescriptor.configurable);
-// BUG(v8:4451): Should be made writable
-assertFalse(globalNonWritableDescriptor.writable);
-assertFalse(globalNonEnumerableDescriptor.enumerable);
-// BUG(v8:4451): Should be overwritten
-assertEquals(false, globalNonWritableDescriptor.value);
-
-// Test that hoisting from blocks does happen in an eval
-eval(`
-  function evalHoisted() { return 0; }
-  {
-    function evalHoisted() { return 1; }
-  }
-  assertEquals(1, evalHoisted());
-`);
-
-// Test that hoisting from blocks happens from eval in a function
-!function() {
-  eval(`
-    function evalInFunctionHoisted() { return 0; }
-    {
-      function evalInFunctionHoisted() { return 1; }
-    }
-    assertEquals(1, evalInFunctionHoisted());
-  `);
-}();
-
-let dontHoistGlobal;
-{ function dontHoistGlobal() {} }
-assertEquals(undefined, dontHoistGlobal);
-
-let dontHoistEval;
-// BUG(v8:) This shouldn't hoist and shouldn't throw
-var throws = false;
-try {
-  eval("{ function dontHoistEval() {} }");
-} catch (e) {
-  throws = true;
-}
-assertTrue(throws);
-
-// When the global object is frozen, silently don't hoist
-// Currently this actually throws BUG(v8:4452)
-Object.freeze(this);
-throws = false;
-try {
-  eval('{ function hoistWhenFrozen() {} }');
-} catch (e) {
-  throws = true;
-}
-assertFalse(this.hasOwnProperty("hoistWhenFrozen"));
-assertThrows(() => hoistWhenFrozen, ReferenceError);
-// Should be assertFalse BUG(v8:4452)
-assertTrue(throws);