Insert missing type cast in JSON.stringify.

R=dcarney@chromium.org
BUG=v8:2570

Review URL: https://chromiumcodereview.appspot.com/12599003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13853 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/json-stringifier.h

@@ -682,7 +682,8 @@ void BasicJsonStringifier::SerializeStringUnchecked_(const SrcChar* src,
     if (DoNotEscape(c)) {
       *(dest++) = static_cast<DestChar>(c);
     } else {
-      const char* chars = &JsonEscapeTable[c * kJsonEscapeTableEntrySize];
+      const uint8_t* chars = reinterpret_cast<const uint8_t*>(
+          &JsonEscapeTable[c * kJsonEscapeTableEntrySize]);
       while (*chars != '\0') *(dest++) = *(chars++);
     }
   }
@@ -722,9 +723,8 @@ void BasicJsonStringifier::SerializeString_(Handle<String> string) {
       if (DoNotEscape(c)) {
         Append_<is_ascii, Char>(c);
       } else {
-        Append_<is_ascii, uint8_t>(
-            reinterpret_cast<const uint8_t*>(
-                &JsonEscapeTable[c * kJsonEscapeTableEntrySize]));
+        Append_<is_ascii, uint8_t>(reinterpret_cast<const uint8_t*>(
+            &JsonEscapeTable[c * kJsonEscapeTableEntrySize]));
       }
       // If GC moved the string, we need to refresh the vector.
       if (*string != string_location) {

test/mjsunit/regress/regress-2570.js

+// 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:
+//
+//     * 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 = ["\u56e7",   // Switch JSON stringifier to two-byte mode.
+         "\u00e6"];  // Latin-1 character.
+
+assertEquals('["\u56e7","\u00e6"]', JSON.stringify(o));