Remove runtime flags for sloppy mode block scoping features

test/mjsunit/harmony/block-let-semantics-sloppy.js

-// Copyright 2011 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: --harmony-sloppy --harmony-sloppy-let --harmony-sloppy-function
-
-// Test temporal dead zone semantics of let bound variables in
-// function and block scopes.
-
-function TestFunctionLocal(s) {
-  try {
-    eval("(function(){" + s + "; })")();
-  } catch (e) {
-    assertInstanceof(e, ReferenceError);
-    return;
-  }
-  assertUnreachable();
-}
-
-function TestBlockLocal(s,e) {
-  try {
-    eval("(function(){ {" + s + ";} })")();
-  } catch (e) {
-    assertInstanceof(e, ReferenceError);
-    return;
-  }
-  assertUnreachable();
-}
-
-
-function TestAll(s) {
-  TestBlockLocal(s);
-  TestFunctionLocal(s);
-}
-
-// Use before initialization in declaration statement.
-TestAll('let x = x + 1');
-TestAll('let x = x += 1');
-TestAll('let x = x++');
-TestAll('let x = ++x');
-TestAll('const x = x + 1');
-
-// Use before initialization in prior statement.
-TestAll('x + 1; let x;');
-TestAll('x = 1; let x;');
-TestAll('x += 1; let x;');
-TestAll('++x; let x;');
-TestAll('x++; let x;');
-TestAll('let y = x; const x = 1;');
-TestAll('let y = x; class x {}');
-
-TestAll('f(); let x; function f() { return x + 1; }');
-TestAll('f(); let x; function f() { x = 1; }');
-TestAll('f(); let x; function f() { x += 1; }');
-TestAll('f(); let x; function f() { ++x; }');
-TestAll('f(); let x; function f() { x++; }');
-TestAll('f(); const x = 1; function f() { return x; }');
-TestAll('f(); class x { }; function f() { return x; }');
-
-TestAll('f()(); let x; function f() { return function() { return x + 1; } }');
-TestAll('f()(); let x; function f() { return function() { x = 1; } }');
-TestAll('f()(); let x; function f() { return function() { x += 1; } }');
-TestAll('f()(); let x; function f() { return function() { ++x; } }');
-TestAll('f()(); let x; function f() { return function() { x++; } }');
-TestAll('f()(); const x = 1; function f() { return function() { return x; } }');
-TestAll('f()(); class x { }; function f() { return function() { return x; } }');
-
-for (var kw of ['let x = 2', 'const x = 2', 'class x { }']) {
-  // Use before initialization with a dynamic lookup.
-  TestAll(`eval("x"); ${kw};`);
-  TestAll(`eval("x + 1;"); ${kw};`);
-  TestAll(`eval("x = 1;"); ${kw};`);
-  TestAll(`eval("x += 1;"); ${kw};`);
-  TestAll(`eval("++x;"); ${kw};`);
-  TestAll(`eval("x++;"); ${kw};`);
-
-  // Use before initialization with check for eval-shadowed bindings.
-  TestAll(`function f() { eval("var y = 2;"); x + 1; }; f(); ${kw};`);
-  TestAll(`function f() { eval("var y = 2;"); x = 1; }; f(); ${kw};`);
-  TestAll(`function f() { eval("var y = 2;"); x += 1; }; f(); ${kw};`);
-  TestAll(`function f() { eval("var y = 2;"); ++x; }; f(); ${kw};`);
-  TestAll(`function f() { eval("var y = 2;"); x++; }; f(); ${kw};`);
-}
-
-// Test that variables introduced by function declarations are created and
-// initialized upon entering a function / block scope.
-function f() {
-  {
-    assertEquals(2, g1());
-    assertEquals(2, eval("g1()"));
-
-    // block scoped function declaration
-    function g1() {
-      return 2;
-    }
-  }
-
-  assertEquals(3, g2());
-  assertEquals(3, eval("g2()"));
-  // function scoped function declaration
-  function g2() {
-    return 3;
-  }
-}
-f();
-
-// Test that a function declaration introduces a block scoped variable
-// and no function hoisting if there is a conflict.
-TestFunctionLocal('{ function k() { return 0; } }; k(); let k;');
-
-// Test that a function declaration sees the scope it resides in.
-function f2() {
-  let m, n, o, p;
-  {
-    m = g;
-    function g() {
-      return a;
-    }
-    let a = 1;
-  }
-  assertEquals(1, m());
-
-  try {
-    throw 2;
-  } catch(b) {
-    n = h;
-    function h() {
-      return b + c;
-    }
-    let c = 3;
-  }
-  assertEquals(5, n());
-
-  {
-    o = i;
-    function i() {
-      return d;
-    }
-    let d = 4;
-  }
-  assertEquals(4, o());
-
-  try {
-    throw 5;
-  } catch(e) {
-    p = j;
-    function j() {
-      return e + f;
-    }
-    let f = 6;
-  }
-  assertEquals(11, p());
-}
-f2();
-
-// Test that resolution of let bound variables works with scopes that call eval.
-function outer() {
-  function middle() {
-    function inner() {
-      return x;
-    }
-    eval("1 + 1");
-    return x + inner();
-  }
-
-  let x = 1;
-  return middle();
-}
-
-assertEquals(2, outer());