Fix edge case for case independent regexp character classes.

http://code.google.com/p/v8/issues/detail?id=2032
Review URL: https://chromiumcodereview.appspot.com/9860029

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11147 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/jsregexp.cc

@@ -4226,7 +4226,7 @@ void CharacterRange::AddCaseEquivalents(ZoneList<CharacterRange>* ranges,
     // as a "singleton block").
     unibrow::uchar range[unibrow::Ecma262UnCanonicalize::kMaxWidth];
     int pos = bottom;
-    while (pos < top) {
+    while (pos <= top) {
       int length = isolate->jsregexp_canonrange()->get(pos, '\0', range);
       uc16 block_end;
       if (length == 0) {

test/mjsunit/regress/regress-2032.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.
+
+// See: http://code.google.com/p/v8/issues/detail?id=2032
+
+// Case independent regexp that ends on the first character in a block.
+assertTrue(/[@-A]/i.test("a"));
+assertTrue(/[@-A]/i.test("A"));
+assertTrue(/[@-A]/i.test("@"));
+
+assertFalse(/[@-A]/.test("a"));
+assertTrue(/[@-A]/.test("A"));
+assertTrue(/[@-A]/.test("@"));
+
+assertFalse(/[¿-À]/i.test('¾');
+assertTrue(/[¿-À]/i.test('¿');
+assertTrue(/[¿-À]/i.test('À');
+assertTrue(/[¿-À]/i.test('à');
+assertFalse(/[¿-À]/i.test('á');
+assertFalse(/[¿-À]/i.test('Á');
+
+assertFalse(/[¿-À]/.test('¾');
+assertTrue(/[¿-À]/.test('¿');
+assertTrue(/[¿-À]/.test('À');
+assertFalse(/[¿-À]/.test('à');
+assertFalse(/[¿-À]/.test('á');
+assertFalse(/[¿-À]/.test('á');
+assertFalse(/[¿-À]/i.test('Á');
+
+assertFalse(/[×-Ö]/i.test('Õ');
+assertTrue(/[×-Ö]/i.test('Ö');
+assertTrue(/[×-Ö]/i.test('ö');
+assertTrue(/[×-Ö]/i.test('×');
+assertFalse(/[×-Ö]/i.test('Ø');
+
+assertFalse(/[×-Ö]/.test('Õ');
+assertTrue(/[×-Ö]/.test('Ö');
+assertFalse(/[×-Ö]/.test('ö');
+assertTrue(/[×-Ö]/.test('×');
+assertFalse(/[×-Ö]/.test('Ø');