57320 2011-03-29 02:42:31 -0700 Web Inspector: Unsatisfying support for objects containing large arrays in Console 2016-02-04 19:51:03 -0800 1 1 1 Unclassified WebKit Web Inspector 528+ (Nightly build) All All RESOLVED INVALID InRadar P2 Normal --- 0 mnaganov webkit-unassigned apavlov bburg bweinstein chutten graouts joepeck jonowells keishi kpiascik loislo mattbaker nvasilyev pfeldman pmuellr rik timothy webkit-bug-importer yurys oldest_to_newest 375140 0 87286 mnaganov 2011-03-29 02:42:31 -0700 Created attachment 87286 Repro page Expanding an object with a huge array inside takes long time and can even crash renderer (observed in Chromium). Consider the page attached -- it creates two objects: big1 and big2, that are almost identical. They both contain a huge array inside them, and in 'big1' this array doesn't have contents, but in 'big2' does. If I evaluate 'big1' in console, and then expand the resulting object, I see its contents immediately. If I evaluate 'big2', and trying to expand it, I experience a delay, and with sufficiently large arrays (20M items), page can crash. The results of both expansions are identical: big1 v Object > big_array: Array[20971520] f1: "aaa" f2: "bbb" > __proto__: Object big2 v Object > big_array: Array[20971520] f1: "aaa" f2: "bbb" > __proto__: Object I'd expect a delay while trying to expand a 'big_array', but not when I'm expanding the container object. 530301 1 pfeldman 2012-01-05 08:13:07 -0800 *** Bug 75624 has been marked as a duplicate of this bug. *** 1056429 2 webkit-bug-importer 2014-12-17 11:23:16 -0800 <rdar://problem/19281532> 1143758 3 bburg 2015-11-20 13:06:03 -0800 Not an issue any more since we give up showing element previews when arrays are past a reasonable size. 1162283 4 timothy 2016-02-04 19:51:03 -0800 <rdar://problem/13281722> 87286 2011-03-29 02:42:31 -0700 2011-03-29 02:42:31 -0700 Repro page big-object.html text/html 408 mnaganov PGh0bWw+CiAgPGhlYWQ+CiAgICA8dGl0bGU+QmlnIG9iamVjdDwvdGl0bGU+CiAgICA8c2NyaXB0 IHR5cGU9InRleHQvamF2YXNjcmlwdCI+CiAgICAgIHZhciBzaXplID0gMjA7CiAgICAgIHZhciBi aWcxID0geyBmMTogImFhYSIsIGYyOiAiYmJiIiwgYmlnX2FycmF5OiBuZXcgQXJyYXkoc2l6ZSAq IDEwMjQgKiAxMDI0KSB9OwogICAgICB2YXIgYmlnMiA9IHsgZjE6ICJhYWEiLCBmMjogImJiYiIs IGJpZ19hcnJheTogbmV3IEFycmF5KHNpemUgKiAxMDI0ICogMTAyNCkgfTsKICAgICAgZm9yICh2 YXIgaSA9IDAsIGwgPSBiaWcyLmJpZ19hcnJheS5sZW5ndGg7IGkgPCBsOyArK2kpIGJpZzIuYmln X2FycmF5W2ldID0gaTsKICAgIDwvc2NyaXB0PgogIDwvaGVhZD4KICA8Ym9keT4KICA8L2JvZHk+ CjwvaHRtbD4K