Do not implicitly convert non-object receivers for strict mode functions.

test/mjsunit/regress/regress-2273.js

+// Copyright 2013 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.
+
+var CheckStringReceiver = function() {
+  "use strict";
+  // Receivers of strict functions are not coerced.
+  assertEquals("string", typeof this);
+};
+
+var CheckNumberReceiver = function() {
+  "use strict";
+  // Receivers of strict functions are not coerced.
+  assertEquals("number", typeof this);
+};
+
+var CheckUndefinedReceiver = function() {
+  "use strict";
+  // Receivers of strict functions are not coerced.
+  assertEquals("undefined", String(this));
+};
+
+var CheckNullReceiver = function() {
+  "use strict";
+  // Receivers of strict functions are not coerced.
+  assertEquals("null", String(this));
+};
+
+var CheckCoersion = function() {
+  // Receivers of non-strict functions are coerced to objects.
+  assertEquals("object", typeof this);
+};
+
+
+function strict_mode() {
+  "use strict";
+  CheckStringReceiver.call("foo");
+  CheckNumberReceiver.call(42);
+  CheckUndefinedReceiver.call(undefined);
+  CheckNullReceiver.call(null);
+  [1].forEach(CheckStringReceiver, "foo");
+  [2].every(CheckStringReceiver, "foo");
+  [3].filter(CheckStringReceiver, "foo");
+  [4].some(CheckNumberReceiver, 42);
+  [5].map(CheckNumberReceiver, 42);
+
+  CheckCoersion.call("foo");
+  CheckCoersion.call(42);
+  CheckCoersion.call(undefined);
+  CheckCoersion.call(null);
+  [1].forEach(CheckCoersion, "foo");
+  [2].every(CheckCoersion, "foo");
+  [3].filter(CheckCoersion, "foo");
+  [4].some(CheckCoersion, 42);
+  [5].map(CheckCoersion, 42);
+};
+strict_mode();
+
+function classic_mode() {
+  CheckStringReceiver.call("foo");
+  CheckNumberReceiver.call(42);
+  CheckUndefinedReceiver.call(undefined);
+  CheckNullReceiver.call(null);
+  [1].forEach(CheckStringReceiver, "foo");
+  [2].every(CheckStringReceiver, "foo");
+  [3].filter(CheckStringReceiver, "foo");
+  [4].some(CheckNumberReceiver, 42);
+  [5].map(CheckNumberReceiver, 42);
+
+  CheckCoersion.call("foo");
+  CheckCoersion.call(42);
+  CheckCoersion.call(undefined);
+  CheckCoersion.call(null);
+  [1].forEach(CheckCoersion, "foo");
+  [2].every(CheckCoersion, "foo");
+  [3].filter(CheckCoersion, "foo");
+  [4].some(CheckCoersion, 42);
+  [5].map(CheckCoersion, 42);
+};
+classic_mode();