Make a strict function's "name" property non-writable.

test/mjsunit/regress/regress-270142.js

Index: test/mjsunit/regress/regress-270142.js
diff --git a/test/mjsunit/compiler/increment-typefeedback.js b/test/mjsunit/regress/regress-270142.js
similarity index 80%
copy from test/mjsunit/compiler/increment-typefeedback.js
copy to test/mjsunit/regress/regress-270142.js
index 798959296c43014f252d65ae5dd11e00563bfd04..6e0865c4f846407228549ef8cce7aff5db6da89d 100644
--- a/test/mjsunit/compiler/increment-typefeedback.js
+++ b/test/mjsunit/regress/regress-270142.js
@@ -25,15 +25,24 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --allow-natives-syntax
+// Check that "name"'s property descriptor for non-strict and strict
+// functions correspond.
 
 function f(x) {
-  x++;
   return x;
 }
 
-f(0.5);
-f(0.5);
-%OptimizeFunctionOnNextCall(f);
-f(0.5);
-assertOptimized(f);
+function g(x) {
+  "use strict";
+  return x;
+}
+
+function checkNameDescriptor(f) {
+  var descriptor = Object.getOwnPropertyDescriptor(f, "name");
+  assertFalse(descriptor.configurable);
+  assertFalse(descriptor.enumerable);
+  assertFalse(descriptor.writable);
+}
+
+checkNameDescriptor(f);
+checkNameDescriptor(g);