Array builtins proceed blithely on frozen arrays

test/mjsunit/regress/regress-299979.js

Index: test/mjsunit/regress/regress-299979.js
diff --git a/test/intl/collator/wellformed-unsupported-locale.js b/test/mjsunit/regress/regress-299979.js
similarity index 89%
copy from test/intl/collator/wellformed-unsupported-locale.js
copy to test/mjsunit/regress/regress-299979.js
index 3963d47a61ff85b1cc491a904533e955110d972d..0afbcb35717f4c60f62d8cd8442ab164ec93246b 100644
--- a/test/intl/collator/wellformed-unsupported-locale.js
+++ b/test/mjsunit/regress/regress-299979.js
@@ -25,8 +25,10 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Passing a well formed but unsupported locale falls back to default.
 
-var collator = Intl.Collator(['xx']);
-
-assertEquals(collator.resolvedOptions().locale, %GetDefaultICULocale());
+(function(){
+  "use strict";
+  var list = Object.freeze([1, 2, 3]);
+  assertThrows(function() { list.unshift(4); }, TypeError);
+  assertThrows(function() { list.shift(); }, TypeError);
+})();