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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Allow setting the prototype of cross-origin objects, as long as they don't change"
href="https://bugs.webkit.org/show_bug.cgi?id=169787">169787</a>
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<th>Summary</th>
<td>Allow setting the prototype of cross-origin objects, as long as they don't change
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>Safari Technology Preview
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<th>Hardware</th>
<td>Unspecified
</td>
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<th>OS</th>
<td>Unspecified
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>Bindings
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>d@domenic.me
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<th>CC</th>
<td>cdumez@apple.com
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<pre>A recent spec tweak made WindowProxy and Location consistent with Object.prototype in the ECMAScript spec, in that you are allowed to set their prototype as long as you don't *change* it. Safari Tech Preview implements the spec perfectly before this tweak; sorry to change this from under you.
The following web platform tests should cover the new behavior exhaustively:
- WindowProxy
- <a href="http://w3c-test.org/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-cross-origin-domain.sub.html">http://w3c-test.org/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-cross-origin-domain.sub.html</a>
- <a href="http://w3c-test.org/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-cross-origin.sub.html">http://w3c-test.org/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-cross-origin.sub.html</a>
- <a href="http://w3c-test.org/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-goes-cross-origin-domain.sub.html">http://w3c-test.org/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-goes-cross-origin-domain.sub.html</a>
- <a href="http://w3c-test.org/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin-domain.sub.html">http://w3c-test.org/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin-domain.sub.html</a>
- <a href="http://w3c-test.org/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin.html">http://w3c-test.org/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin.html</a>
- Location
- <a href="http://w3c-test.org/html/browsers/history/the-location-interface/location-prototype-setting-cross-origin-domain.sub.html">http://w3c-test.org/html/browsers/history/the-location-interface/location-prototype-setting-cross-origin-domain.sub.html</a>
- <a href="http://w3c-test.org/html/browsers/history/the-location-interface/location-prototype-setting-cross-origin.sub.html">http://w3c-test.org/html/browsers/history/the-location-interface/location-prototype-setting-cross-origin.sub.html</a>
- <a href="http://w3c-test.org/html/browsers/history/the-location-interface/location-prototype-setting-goes-cross-origin-domain.sub.html">http://w3c-test.org/html/browsers/history/the-location-interface/location-prototype-setting-goes-cross-origin-domain.sub.html</a>
- <a href="http://w3c-test.org/html/browsers/history/the-location-interface/location-prototype-setting-same-origin-domain.sub.html">http://w3c-test.org/html/browsers/history/the-location-interface/location-prototype-setting-same-origin-domain.sub.html</a>
- <a href="http://w3c-test.org/html/browsers/history/the-location-interface/location-prototype-setting-same-origin.html">http://w3c-test.org/html/browsers/history/the-location-interface/location-prototype-setting-same-origin.html</a></pre>
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