Mark some bigint tests failing in dart2js.

tests/corelib/int_parse_radix_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import "package:expect/expect.dart";
 import "dart:math" show pow;
 
 void main() {
   bool checkedMode = false;
   assert(checkedMode = true);
-  const String oneByteWhiteSpace = "\x09\x0a\x0b\x0c\x0d \x85\xa0";
+  const String oneByteWhiteSpace = "\x09\x0a\x0b\x0c\x0d\x20"
+    "\x85"    /// 01: ok
+    "\xa0";
   const String whiteSpace = "$oneByteWhiteSpace\u1680\u180e"
       "\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a"
       "\u2028\u2029\u202f\u205f\u3000\ufeff";
 
   var digits = "0123456789abcdefghijklmnopqrstuvwxyz";
   var zeros = "0" * 64;
+
+  for (int i = 0; i < whiteSpace.length; i++) {
+    var ws = whiteSpace[i];
+    print(ws.codeUnitAt(0).toRadixString(16));
+    Expect.equals(0, int.parse("${ws}0${ws}", radix: 2));
+  }
+
   void testParse(int result, String radixString, int radix) {
     var m = "$radixString/$radix->$result";
     Expect.equals(result,
                   int.parse(radixString.toLowerCase(), radix: radix), m);
     Expect.equals(result,
                   int.parse(radixString.toUpperCase(), radix: radix), m);
     Expect.equals(result, int.parse(" $radixString", radix: radix), m);
     Expect.equals(result, int.parse("$radixString ", radix: radix), m);
     Expect.equals(result, int.parse(" $radixString ", radix: radix), m);
     Expect.equals(result, int.parse("+$radixString", radix: radix), m);
@@ skipping 18 matching lines @@
     Expect.equals(-result, int.parse("-$zeros$radixString", radix: radix), m);
   }
 
   for (int i = 0; i <= 36 * 36; i++) {
     for (int r = 2; r <= 36; r++) {
       String radixString = i.toRadixString(r);
       testParse(i, radixString, r);
     }
   }
 
-  for (int i = 2; i <= 36; i++) {
-    // Test with bignums.
-    var digit = digits[i - 1];
-    testParse(pow(i, 64) - 1, digit * 64, i);
-    testParse(0, zeros, i);
-  }
+  for (int i = 2; i <= 36; i++) {              /// 02: ok
+    // Test with bignums.                      /// 02: continued
+    var digit = digits[i - 1];                 /// 02: continued
+    testParse(pow(i, 64) - 1, digit * 64, i);  /// 02: continued
+    testParse(0, zeros, i);                    /// 02: continued
+  }                                            /// 02: continued
 
   // Allow both upper- and lower-case letters.
   Expect.equals(0xABCD, int.parse("ABCD", radix: 16));
   Expect.equals(0xABCD, int.parse("abcd", radix: 16));
   Expect.equals(15628859, int.parse("09azAZ", radix: 36));
   // Big number.
-  Expect.equals(0x12345678123456781234567812345678,
-                int.parse("0x12345678123456781234567812345678"));
+  Expect.equals(0x12345678123456781234567812345678,  /// 02: continued
+                int.parse("0x1234567812345678"       /// 02: continued
+                          "1234567812345678"));      /// 02: continued
   // Allow whitespace before and after the number.
   Expect.equals(1, int.parse(" 1", radix: 2));
   Expect.equals(1, int.parse("1 ", radix: 2));
   Expect.equals(1, int.parse(" 1 ", radix: 2));
   Expect.equals(1, int.parse("\n1", radix: 2));
   Expect.equals(1, int.parse("1\n", radix: 2));
   Expect.equals(1, int.parse("\n1\n", radix: 2));
   Expect.equals(1, int.parse("+1", radix: 2));
 
   void testFails(String source, int radix) {
@@ skipping 43 matching lines @@
   testBadArguments("0", 0);
   testBadArguments("0", 1);
   testBadArguments("0", 37);
 
   // If handleError isn't an unary function, and it's called, it also throws
   // (either TypeError in checked mode, or some failure in unchecked mode).
   Expect.throws(() => int.parse("9", radix: 8, onError: "not a function"));
   Expect.throws(() => int.parse("9", radix: 8, onError: () => 42));
   Expect.throws(() => int.parse("9", radix: 8, onError: (v1, v2) => 42));
 }