Correctly initialize regexp global cache.

R=ulan@chromium.org
BUG=148378

Review URL: https://chromiumcodereview.appspot.com/10905239

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12491 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/jsregexp.cc

@@ -706,16 +706,17 @@ Handle<JSArray> RegExpImpl::SetLastMatchInfo(Handle<JSArray> last_match_info,
 RegExpImpl::GlobalCache::GlobalCache(Handle<JSRegExp> regexp,
                                      Handle<String> subject,
                                      bool is_global,
-                                     Isolate* isolate) {
+                                     Isolate* isolate)
+  : register_array_(NULL),
+    register_array_size_(0),
+    regexp_(regexp),
+    subject_(subject) {
 #ifdef V8_INTERPRETED_REGEXP
   bool interpreted = true;
 #else
   bool interpreted = false;
 #endif  // V8_INTERPRETED_REGEXP
 
-  regexp_ = regexp;
-  subject_ = subject;
-
   if (regexp_->TypeTag() == JSRegExp::ATOM) {
     static const int kAtomRegistersPerMatch = 2;
     registers_per_match_ = kAtomRegistersPerMatch;

test/mjsunit/regress/regress-148378.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.
+
+"a".replace(/a/g, function() { return "c"; });
+
+function test() {
+  try {
+    test();
+  } catch(e) {
+    "b".replace(/(b)/g, function() { return "c"; });
+  }
+}
+
+test();