Fix Object.preventExtensions, .seal, .freeze on typed arrays

test/mjsunit/regress/regress-95920.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
@@ skipping 10 matching lines @@
 // 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.
 
 // Tests that objects with external arrays cannot be sealed or have their
 // properties redefined.
 
-(function() {
-  assertThrows(function() {
-    [0].every(function(){ Object.seal((new Int8Array(42))); });
+Object.preventExtensions(new Int8Array(42));
+Object.seal(new Int8Array(42));
+
+// No elements, so should succeed.
+Object.freeze(new Int8Array(0));
+
+var o = new Int8Array(42);
+assertThrows(function() {
+  Object.freeze(o);
+  assertUnreable();
+  }, TypeError);
+
+// Freeze should still have managed to preventExtensions o.
+assertFalse(Object.isExtensible(o));
+
+assertThrows(function() {
+    Object.defineProperty(new Int8Array(42), "1",
+                          { writable: false, value: "1" });
     assertUnreable();
-    }, TypeError)
-})();
-
-(function() {
-  assertThrows(function() {
-    [0].every(function(){ Object.freeze((new Int8Array(42))); });
-    assertUnreable();
-    }, TypeError)
-})();
-
-(function() {
-  assertThrows(function() {
-    [0].every(function(){ Object.preventExtensions((new Int8Array(42))); });
-    assertUnreable();
-    }, TypeError)
-})();
-
-(function() {
-  assertThrows(function() {
-      Object.defineProperty(new Int8Array(42), "1",
-                            { writable: false, value: "1" });
-      assertUnreable();
-    })
-})();
+  });