Add checks to runtime functions.

test/mjsunit/date.js

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+// Flags: --allow-natives-syntax
+
 // Test date construction from other dates.
 var date0 = new Date(1111);
 var date1 = new Date(date0);
 assertEquals(1111, date0.getTime());
 assertEquals(date0.getTime(), date1.getTime());
 var date2 = new Date(date0.toString());
 assertEquals(1000, date2.getTime());
 
 // Test that dates may contain commas.
 var date0 = Date.parse("Dec 25 1995 1:30");
@@ skipping 274 matching lines @@
   var hh = (i < 10) ? "0" + i : "" + i;
   for (var j = 0; j < 60; j += 15) {
     var mm = (j < 10) ? "0" + j : "" + j;
     var ms = (i * 60 + j) * 60000;
     var string = "1972-03-28T23:50:03.500-" + hh + ":" + mm;
     assertEquals(70674603500 + ms, Date.parse(string), string);
     string = "1972-03-28T23:50:03.500+" + hh + ":" + mm;
     assertEquals(70674603500 - ms, Date.parse(string), string);
   }
 }
+
+assertThrows('Date.prototype.setTime.call("", 1);', TypeError);
+assertThrows('Date.prototype.setYear.call("", 1);', TypeError);
+assertThrows('Date.prototype.setHours.call("", 1, 2, 3, 4);', TypeError);
+assertThrows('Date.prototype.getDate.call("");', TypeError);
+assertThrows('Date.prototype.getUTCDate.call("");', TypeError);
+
+var date = new Date();
+date.getTime();
+date.getTime();
+%OptimizeFunctionOnNextCall(Date.prototype.getTime);
+assertThrows(function() { Date.prototype.getTime.call(""); }, TypeError);
+assertTrue(%GetOptimizationStatus(Date.prototype.getTime) != 1);
+
+date.getYear();
+date.getYear();
+%OptimizeFunctionOnNextCall(Date.prototype.getYear);
+assertThrows(function() { Date.prototype.getYear.call(""); }, TypeError);
+opt_status = %GetOptimizationStatus(Date.prototype.getYear);
+assertTrue(%GetOptimizationStatus(Date.prototype.getTime) != 1);