Merge bleeding_edge.

src/harmony-math.js

Index: src/harmony-math.js
diff --git a/test/mjsunit/regress/readonly3.js b/src/harmony-math.js
similarity index 72%
copy from test/mjsunit/regress/readonly3.js
copy to src/harmony-math.js
index f81979d272217d768fa9c9c90a0b22ce34d1c15b..a4d3f2e8a5e9c5936630571644605402dee1199d 100644
--- a/test/mjsunit/regress/readonly3.js
+++ b/src/harmony-math.js
@@ -25,41 +25,36 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-this.x = 0;
-
-var p = {};
-Object.defineProperty(p, "x", {writable:false, value:5});
-this.__proto__ = p;
-
-function s(v) {
-  v.x = 1;
+'use strict';
+
+// ES6 draft 09-27-13, section 20.2.2.28.
+function MathSign(x) {
+  x = TO_NUMBER_INLINE(x);
+  if (x > 0) return 1;
+  if (x < 0) return -1;
+  if (x === 0) return x;
+  return NAN;
 }
 
-function s_strict(v) {
-  "use strict";
-  v.x = 1;
-}
 
-function c(p) {
-  return {__proto__: p};
+// ES6 draft 09-27-13, section 20.2.2.34.
+function MathTrunc(x) {
+  x = TO_NUMBER_INLINE(x);
+  if (x > 0) return MathFloor(x);
+  if (x < 0) return MathCeil(x);
+  if (x === 0) return x;
+  return NAN;
 }
 
-var o1 = c(this);
-var o2 = c(this);
 
-// Initialize the store IC.
-s(c(this));
-s(c(this));
-s_strict(c(this));
-s_strict(c(this));
+function ExtendMath() {
+  %CheckIsBootstrapping();
 
-delete this.x;
-
-// Verify that direct setting fails.
-o1.x = 20;
-assertEquals(5, o1.x);
+  // Set up the non-enumerable functions on the Math object.
+  InstallFunctions($Math, DONT_ENUM, $Array(
+    "sign", MathSign,
+    "trunc", MathTrunc
+  ));
+}
 
-// Verify that setting through the IC fails.
-s(o2);
-assertEquals(5, o2.x);
-assertThrows("s_strict(o2);", TypeError);
+ExtendMath();