v8/test/mjsunit/regress/regress-1493017.js
ager@chromium.org bab4b3b2e0 Simplify the map collection regression test. This test is the minimal
example that would trigger the bug.
Review URL: http://codereview.chromium.org/43004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1467 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2009-03-10 07:23:22 +00:00

53 lines
2.1 KiB
JavaScript

// 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 collection of abandoned maps. Tests that deleted map
// transitions do not show up as properties in for in.
// Flags: --expose-gc --collect-maps
function C() {}
// Create an instance of C. Add a property to the instance and then
// remove all references to instances of C.
var o = new C();
o.x = 42;
o = null;
// Force a global GC. This will collect the maps starting from C and
// delete map transitions.
gc();
// Create a new instance of C.
o = new C();
// Test that the deleted map transitions do not show up in for in.
for (var p in o) {
assertTrue(false);
}