[Interpreter] Handles legacy constants in strict mode.

test/mjsunit/regress/regress-599068-func-bindings.js

Index: test/mjsunit/regress/regress-599068-func-bindings.js
diff --git a/test/mjsunit/regress/regress-599068-func-bindings.js b/test/mjsunit/regress/regress-599068-func-bindings.js
new file mode 100644
index 0000000000000000000000000000000000000000..887c00099a7b053f4a3968043f72da74ae5e7aee
--- /dev/null
+++ b/test/mjsunit/regress/regress-599068-func-bindings.js
@@ -0,0 +1,45 @@
+// 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.
+
+// Flags: --allow-natives-syntax
+
+// Tests function bindings are correctly handled in ignition.
+(function f() {
+  function assignSloppy() {
+    f = 0;
+  }
+  assertDoesNotThrow(assignSloppy);
+
+  function assignStrict() {
+    'use strict';
+    f = 0;
+  }
+  assertThrows(assignStrict, TypeError);
+
+  function assignStrictLookup() {
+    eval("'use strict'; f = 1;");
+  }
+  assertThrows(assignStrictLookup, TypeError);
+})();
+
+// Tests for compound assignments which are handled differently
+// in crankshaft.
+(function f() {
+  function assignSloppy() {
+    f += "x";
+  }
+  assertDoesNotThrow(assignSloppy);
+  assertDoesNotThrow(assignSloppy);
+  %OptimizeFunctionOnNextCall(assignSloppy);
+  assertDoesNotThrow(assignSloppy);
+
+  function assignStrict() {
+    'use strict';
+    f += "x";
+  }
+  assertThrows(assignStrict, TypeError);
+  assertThrows(assignStrict, TypeError);
+  %OptimizeFunctionOnNextCall(assignStrict);
+  assertThrows(assignStrict, TypeError);
+})();