|Summary:||postMessage should serialise dom objects to null by default|
|Product:||WebKit||Reporter:||Kim Grönholm <kim.1.gronholm>|
|Component:||New Bugs||Assignee:||Oliver Hunt <oliver>|
|Severity:||Normal||CC:||hausmann, kim.1.gronholm, laszlo.gombos, oliver|
|Version:||528+ (Nightly build)|
|Bug Depends on:|
Description Kim Grönholm 2010-06-08 13:28:16 PDT
Internal structured cloning algorithm should result in null when attempting to serialise Dom objects that are not real JS objects. This is not the case currently as can be seen in the test: LayoutTests/fast/dom/Window/window-postmessage-clone.html Also the expected output of the layout test is wrong.
Comment 1 Kim Grönholm 2010-06-08 13:35:32 PDT
*** Bug 40232 has been marked as a duplicate of this bug. ***
Comment 2 Kim Grönholm 2010-06-16 11:31:10 PDT
Created attachment 58911 [details] Removes the test case with wrong expected output Temporarily disabling the postMessage(window, "*") test as the expected result and the behavior are both wrong. This doesn't fix the actual issue but prevents the test case from failing due to any unrelated changes. The test case should be enabled again with correct expected output after the bug has been fixed.
Comment 3 Alexey Proskuryakov 2010-06-17 15:17:18 PDT
From IRC discussion: - currently, the subtest raises "TypeError: Cannot post cyclic structures"; - with an unrelated patch, a different exception is raised, because the order of traversal changes; - the correct behavior is to return null.
Comment 4 Alexey Proskuryakov 2010-06-17 15:21:50 PDT
Comment on attachment 58911 [details] Removes the test case with wrong expected output It's best to keep this subtest to make sure that we don't break window serialization even more (e.g. that we don't start to crash). I think that the best way to proceed is to change this subtest's results in the same unrelated change that will affect it.