Fixed error introduced in r12761.

BUG=2373

Review URL: https://chromiumcodereview.appspot.com/11198068

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12765 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/json-parser.h

@@ -400,12 +400,14 @@ Handle<Object> JsonParser<seq_ascii>::ParseJsonNumber() {
     if ('0' <= c0_ && c0_ <= '9') return ReportUnexpectedCharacter();
   } else {
     int i = 0;
+    int digits = 0;
     if (c0_ < '1' || c0_ > '9') return ReportUnexpectedCharacter();
     do {
       i = i * 10 + c0_ - '0';
+      digits++;
       Advance();
-    } while (c0_ >= '0' && c0_ <= '9' && i <= (kMaxInt - 9) / 10);
-    if (c0_ != '.' && c0_ != 'e' && c0_ != 'E') {
+    } while (c0_ >= '0' && c0_ <= '9');
+    if (c0_ != '.' && c0_ != 'e' && c0_ != 'E' && digits < 10) {
       SkipWhitespace();
       return Handle<Smi>(Smi::FromInt((negative ? -i : i)), isolate());
     }

test/mjsunit/regress/regress-2373.js

+// Copyright 2012 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:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+var o = JSON.parse('{"a":2600753951}');
+assertEquals(2600753951, o.a);