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      1 // Copyright 2016 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Flags: --no-harmony-restrictive-declarations
      6 
      7 // ES#sec-functiondeclarations-in-ifstatement-statement-clauses
      8 // Annex B 3.4 FunctionDeclarations in IfStatement Statement Clauses
      9 // In sloppy mode, function declarations in if statements act like
     10 // they have a block around them. Prohibited in strict mode.
     11 (function() {
     12   assertEquals(undefined, f);
     13   if (false) function f() { };
     14   assertEquals(undefined, f);
     15 })();
     16 
     17 (function() {
     18   assertEquals(undefined, f);
     19   if (true) function f() { };
     20   assertEquals('function', typeof f);
     21 })();
     22 
     23 (function() {
     24   assertEquals(undefined, f);
     25   if (true) {} else function f() { };
     26   assertEquals(undefined, f);
     27 })();
     28 
     29 (function() {
     30   assertEquals(undefined, f);
     31   if (false) {} else function f() { };
     32   assertEquals('function', typeof f);
     33 })();
     34 
     35 // For legacy reasons, we also support these types of semantics as
     36 // the body of a for or with statement.
     37 (function() {
     38   for (;false;) function f() { };
     39   assertEquals(undefined, f);
     40 })();
     41 
     42 (function() {
     43   for (var x in {}) function f() { };
     44   assertEquals(undefined, f);
     45 })();
     46 
     47 (function() {
     48   var x;
     49   for (x in {}) function f() { };
     50   assertEquals(undefined, f);
     51 })();
     52 
     53 (function() {
     54   for (var i = 0; i < 1; i++) function f() { };
     55   assertEquals('function', typeof f);
     56 })();
     57 
     58 (function() {
     59   for (var x in {a: 1}) function f() { };
     60   assertEquals('function', typeof f);
     61 })();
     62 
     63 (function() {
     64   var x;
     65   for (x in {a: 1}) function f() { };
     66   assertEquals('function', typeof f);
     67 })();
     68 
     69 (function() {
     70   with ({}) function f() { };
     71   assertEquals('function', typeof f);
     72 })();
     73 
     74 (function() {
     75   do function f() {} while (0);
     76   assertEquals('function', typeof f);
     77 })();
     78 
     79 // Labeled function declarations undergo the same hoisting/FiB semantics as if
     80 // they were unalbeled.
     81 (function() {
     82   function bar() {
     83     return f;
     84     x: function f() {}
     85   }
     86   assertEquals('function', typeof bar());
     87 })();
     88 
     89 (function() {
     90   function bar() {
     91     return f;
     92     {
     93       x: function f() {}
     94     }
     95   }
     96   assertEquals(undefined, bar());
     97 })();
     98