Initialize Date parse cache with SMI instead of double to workaround sharing mutable...

This is the only field in the snapshot that was tracked as double.

R=verwaest@chromium.org
TEST=mjsunit/regress/regress-280531.js
BUG=280531
LOG=Y

Review URL: https://chromiumcodereview.appspot.com/112003005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18298 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

diff --git a/src/date.js b/src/date.js
index 2363841..f3d4af2 100644 (file)
--- a/src/date.js
+++ b/src/date.js
@@ -132,7 +132,7 @@ function TimeClip(time) {
 // strings over and over again.
 var Date_cache = {
   // Cached time value.
-  time: NAN,
+  time: 0,
   // String input for which the cached time is valid.
   string: null
 };

diff --git a/test/mjsunit/regress/regress-280531.js b/test/mjsunit/regress/regress-280531.js
new file mode 100644 (file)
index 0000000..6799574
--- /dev/null
+++ b/test/mjsunit/regress/regress-280531.js
@@ -0,0 +1,32 @@
+// 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 contextA = Realm.create();
+var date1 = Realm.eval(contextA, "new Date('Thu, 29 Aug 2013 00:00:00 UTC')");
+new Date('Thu, 29 Aug 2013 00:00:01 UTC');
+var date2 = Realm.eval(contextA, "new Date('Thu, 29 Aug 2013 00:00:00 UTC')");
+assertEquals(date1, date2);