Fix crasher when checking for "of", but next token has no literal buffer

test/mjsunit/regress/regress-crbug-248025.js

Index: test/mjsunit/regress/regress-crbug-248025.js
diff --git a/test/mjsunit/regress/regress-crbug-135008.js b/test/mjsunit/regress/regress-crbug-248025.js
similarity index 81%
copy from test/mjsunit/regress/regress-crbug-135008.js
copy to test/mjsunit/regress/regress-crbug-248025.js
index 2be396e8055a916b1f7c7370ff32ff0d40eea762..c5988595663c9622853e98585ed4a4e9bed089b1 100644
--- a/test/mjsunit/regress/regress-crbug-135008.js
+++ b/test/mjsunit/regress/regress-crbug-248025.js
@@ -1,4 +1,4 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
+// Copyright 2013 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:
@@ -25,21 +25,16 @@
 // (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: --harmony-iteration
+
 // Filler long enough to trigger lazy parsing.
 var filler = "//" + new Array(1024).join('x');
 
-var scope = { x:23 };
-
-with(scope) {
-  eval(
-    "scope.f = (function outer() {" +
-    "  function inner() {" +
-    "    return x;" +
-    "  }" +
-    "  return inner;" +
-    "})();" +
-    filler
-  );
-};
-
-assertSame(23, scope.f());
+// Test that the pre-parser does not crash when the expected contextual
+// keyword as part if a 'for' statement is not and identifier.
+try {
+  eval(filler + "\nfunction f() { for (x : y) { } }");
+  throw "not reached";
+} catch (e) {
+  if (!(e instanceof SyntaxError)) throw e;
+}