173329 2017-06-13 14:25:38 -0700 Should media query callbacks be fired asynchronously? 2017-06-13 16:27:43 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 1 zalan webkit-unassigned ap bfulgham dino rniwa simon.fraser webkit-bug-importer zalan oldest_to_newest 1318818 0 312809 zalan 2017-06-13 14:25:38 -0700 Created attachment 312809 Test case Currently Document::evaluateMediaQueryList() fires then synchronously through FrameView::layout. Since the callback could run any JS code, we might not be able to recover from it when climbing back on the callstack with nested frames. See attached testcase (run-webkit-test --debug -1) 1318819 1 webkit-bug-importer 2017-06-13 14:26:15 -0700 <rdar://problem/32748777> 312809 2017-06-13 14:25:38 -0700 2017-06-13 14:25:38 -0700 Test case show-modal-dialog-during-execCommand.html text/html 317 zalan PGJvZHk+CjxpZnJhbWUgaWQ9Zm9vYmFyPjwvaWZyYW1lPgo8c2NyaXB0PgogICAgbGV0IG1lZGlh TGlzdCA9IGRvY3VtZW50LmdldEVsZW1lbnRCeUlkKCJmb29iYXIiKS5jb250ZW50V2luZG93Lm1h dGNoTWVkaWEoIihtYXgtd2lkdGg6IDEwMHB4KSIpOwogICAgbWVkaWFMaXN0LmFkZExpc3RlbmVy KCgpID0+IHsKICAgICAgICBsZXQgbGluayA9IGRvY3VtZW50LmNyZWF0ZUVsZW1lbnQoImEiKTsK ICAgICAgICBsaW5rLmhyZWYgPSAiaHR0cDovL2dvb2dsZS5jb20iOwogICAgICAgIGxpbmsuY2xp Y2soKTsKICAgIH0pOwo8L3NjcmlwdD4KPC9ib2R5Pgo=