185311 2018-05-04 11:24:56 -0700 Possible regression: w3c parsing test html5lib_menuitem-element.html failing 2018-05-29 16:06:47 -0700 1 1 1 Unclassified WebKit WebCore Misc. Other Unspecified Unspecified RESOLVED CONFIGURATION CHANGED InRadar P2 Normal --- 1 justin_fan webkit-unassigned webkit-bug-importer oldest_to_newest 1420773 0 339570 justin_fan 2018-05-04 11:24:56 -0700 Created attachment 339570 Standard error output from test crash imported/w3c/web-platform-tests/html/syntax/parsing/html5lib_menuitem-element.html is crashing in WebkitTestRunner due to a failed assertion in HistoryItem::addChildItem. Output attached. 1420780 1 webkit-bug-importer 2018-05-04 11:34:13 -0700 <rdar://problem/39983702> 339570 2018-05-04 11:24:56 -0700 2018-05-04 11:24:56 -0700 Standard error output from test crash html5lib_menuitem-element-stderr.txt text/plain 3926 justin_fan QVNTRVJUSU9OIEZBSUxFRDogIWNoaWxkSXRlbVdpdGhUYXJnZXQoY2hpbGQtPnRhcmdldCgpKQpo aXN0b3J5L0hpc3RvcnlJdGVtLmNwcCgzMTUpIDogdm9pZCBXZWJDb3JlOjpIaXN0b3J5SXRlbTo6 YWRkQ2hpbGRJdGVtKFJlZjxXZWJDb3JlOjpIaXN0b3J5SXRlbT4gJiYpCjEgICAweDEzY2Q0YjYw OSBXVEZDcmFzaAoyICAgMHgxMmY2MDNhYzMgV2ViQ29yZTo6SGlzdG9yeUl0ZW06OmFkZENoaWxk SXRlbShXVEY6OlJlZjxXZWJDb3JlOjpIaXN0b3J5SXRlbSwgV1RGOjpEdW1iUHRyVHJhaXRzPFdl YkNvcmU6Okhpc3RvcnlJdGVtPiA+JiYpCjMgICAweDEyZmIxZmMzMCBXZWJDb3JlOjpIaXN0b3J5 Q29udHJvbGxlcjo6Y3JlYXRlSXRlbVRyZWUoV2ViQ29yZTo6RnJhbWUmLCBib29sKQo0ICAgMHgx MmZiMWNlMDAgV2ViQ29yZTo6SGlzdG9yeUNvbnRyb2xsZXI6OnVwZGF0ZUJhY2tGb3J3YXJkTGlz dENsaXBwZWRBdFRhcmdldChib29sKQo1ICAgMHgxMmZiMWUyZWYgV2ViQ29yZTo6SGlzdG9yeUNv 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