NEW230038
Incorrect matching of regular expressions 
https://bugs.webkit.org/show_bug.cgi?id=230038
Summary Incorrect matching of regular expressions
Yeting Li
Reported 2021-09-08 01:13:12 PDT
Created attachment 437607 [details] demo code For some regexes with backreferences and optional groupings, for example, the regex /(a)?(b)\1/ should not match the string "b", but JavaScriptCore determines the regex /(a)?(b)\1/ matching the string "b". It should be pointed out that the semantics of the regex /(a)?(b)\1/ and the regex /(a?)(b)\1/ are different. Specifically, the regex /(a)?(b)\1/ does not match the string "b", and the regex /(a?)(b)\1/ matches the string "b".
Attachments
demo code (55 bytes, text/javascript)
2021-09-08 01:13 PDT, Yeting Li 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2021-09-15 01:14:24 PDT
<rdar://problem/83135746>
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