259713 2023-08-01 16:12:46 -0700 JSON.parse error in cloudflare check page 2023-09-11 16:33:06 -0700 1 1 1 Unclassified WebKit JavaScriptCore Other PC Linux RESOLVED FIXED InRadar P2 Major --- 1 two webkit-unassigned ap mcatanzaro webkit-bug-importer oldest_to_newest 1969150 0 two 2023-08-01 16:12:46 -0700 on websites that use cloudflare for "protection", the "checking security" page doesn't complete ``` [Error] SyntaxError: JSON Parse error: Invalid escape character ' parse (v1:1:157907) gR (v1:1:157907) aQnCf (v1:1:149338) gV (v1:1:149374) gQ (v1:1:137483) h4 (v1:1:124536) fD (v1:1:121510) BBcuN (v1:1:141832) (anonymous function) (v1:1:142405) (anonymous function) (v1:1:142161) ``` this only happens in Epiphany stable, not nightly on matrix people said it doesn't happen when the js debugger is on 1969154 1 mcatanzaro 2023-08-01 16:32:27 -0700 Please, always provide WebKitGTK version when reporting a bug. You mentioned on Matrix this was with WebKitGTK 2.40.4, which is 260527.381@webkitglib/2.40 (86182cd30e2b8c7ab3414e0c883a333033868a12). 1969155 2 mcatanzaro 2023-08-01 16:42:37 -0700 We think this is a bug with the DFG JIT tier because a user reports on Matrix that the problem goes away when using JSC_useDFGJIT=0. There are two DFG fixes in WebKitGTK 2.40.5, from bug #256865 and bug #257285. It makes sense to test that before asking JSC developers to investigate further. Also, the problem reportedly does not occur in Tech Preview (at least, it certainly doesn't occur for me), so if it's not fixed in 2.40.5 it might be bisectable. 1970186 3 webkit-bug-importer 2023-08-08 16:13:16 -0700 <rdar://problem/113592447> 1970547 4 mcatanzaro 2023-08-10 12:08:59 -0700 Any chance this was indeed fixed by WebKitGTK 2.40.5? Can you provide an example website where the problem can be reproduced? I want to see if it is bisectable. 1972710 5 two 2023-08-22 13:58:31 -0700 it was on many sites including gitlab.com/users/sign_in, but i can't reproduce this any more