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deps/v8/test/mjsunit/es6/sloppy-restrictive-block-function.js

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+// Copyright 2016 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.
+
+// ES#sec-functiondeclarations-in-ifstatement-statement-clauses
+// Annex B 3.4 FunctionDeclarations in IfStatement Statement Clauses
+// In sloppy mode, function declarations in if statements act like
+// they have a block around them. Prohibited in strict mode.
+(function() {
+  if (false) function f() { };
+  assertEquals(undefined, f);
+})();
+
+(function() {
+  assertEquals(undefined, f);
+  if (true) function f() { };
+  assertEquals('function', typeof f);
+})();
+
+(function() {
+  assertEquals(undefined, f);
+  if (true) {} else function f() { };
+  assertEquals(undefined, f);
+})();
+
+(function() {
+  assertEquals(undefined, f);
+  if (false) {} else function f() { };
+  assertEquals('function', typeof f);
+})();
+
+// Labeled function declarations undergo the same hoisting/FiB semantics as if
+// they were unalbeled.
+(function() {
+  function bar() {
+    return f;
+    x: function f() {}
+  }
+  assertEquals('function', typeof bar());
+})();
+
+(function() {
+  function bar() {
+    return f;
+    {
+      x: function f() {}
+    }
+  }
+  assertEquals(undefined, bar());
+})();