RESOLVED FIXED 204067
RegExpBuiltinExec should create "groups" property unconditionally 
https://bugs.webkit.org/show_bug.cgi?id=204067
Summary RegExpBuiltinExec should create "groups" property unconditionally
Alexey Shvayka
Reported 2019-11-11 06:03:44 PST
Test case: /\d/.exec("1").hasOwnProperty("groups") Expected: true Actual: false Also, "groups" object should have `null` [[Prototype]]. Discussion: https://github.com/tc39/proposal-regexp-named-groups/issues/34 ECMA262: https://tc39.es/ecma262/#sec-regexpbuiltinexec (step 24) Test262: https://test262.report/browse/built-ins/RegExp/named-groups/groups-object-undefined.js https://test262.report/browse/built-ins/RegExp/named-groups/groups-object.js
Attachments
Patch (15.45 KB, patch)
2019-11-11 06:45 PST, Alexey Shvayka 		no flags
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Alexey Shvayka
Comment 1 2019-11-11 06:45:43 PST
Created attachment 383266 [details] Patch
Alexey Shvayka
Comment 2 2019-11-11 07:11:28 PST
I am adding this bug as a blocker of RegExp Match Indices proposal (https://bugs.webkit.org/show_bug.cgi?id=202475), because "indices" property should be created after "groups" (order is observable), and the way we currently add properties in RegExpMatchesArray.cpp/createStructureImpl will make that unnecessarily tricky.
Ross Kirsling
Comment 3 2019-11-12 13:26:24 PST
Comment on attachment 383266 [details] Patch Nice!
WebKit Commit Bot
Comment 4 2019-11-12 14:09:44 PST
Comment on attachment 383266 [details] Patch Clearing flags on attachment: 383266 Committed r252374: <https://trac.webkit.org/changeset/252374>
WebKit Commit Bot
Comment 5 2019-11-12 14:09:45 PST
All reviewed patches have been landed. Closing bug.
Radar WebKit Bug Importer
Comment 6 2019-11-12 14:10:16 PST
<rdar://problem/57130089>
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