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Unified Diff: test/mjsunit/regress/regress-386.js

Issue 141031: Fix issue 386, a bug in JSObject::ReplaceSlowProperty with constant transitio... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 11 years, 6 months ago
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Index: test/mjsunit/regress/regress-386.js
===================================================================
--- test/mjsunit/regress/regress-386.js (revision 0)
+++ test/mjsunit/regress/regress-386.js (revision 0)
@@ -0,0 +1,47 @@
+// Copyright 2009 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.
+
+
+// Test for http://code.google.com/p/v8/issues/detail?id=386
+// This test creates enough properties in A so that adding i as
+// a constant function, in the first call to the constructor, leaves
+// the object's map in the fast case and adds a constant function map
+// transition.
+// Adding i in the second call to the constructor creates a real property,
+// and simultaneously converts the object from fast case to slow case
+// and changes i from a map transition to a real property. There was
+// a flaw in the code that handled this combination of events.
+
+function A() {
+ for (var i = 0; i < 13; i++) {
+ this['a' + i] = i;
+ }
+ this.i = function(){};
+};
+
+new A();
+new A();
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