Bug 171543

Summary: [ES6] Arrow function. Issue in access to this after eval('super()') within constructor
Product: WebKit Reporter: GSkachkov <gskachkov>
Component: JavaScriptCoreAssignee: GSkachkov <gskachkov>
Status: RESOLVED FIXED    
Severity: Normal CC: buildbot, commit-queue, keith_miller, mark.lam, msaboff, saam, ysuzuki
Priority: P2    
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on:    
Bug Blocks: 171274    
Attachments:
Description Flags
Patch none

GSkachkov
Reported 2017-05-02 01:36:55 PDT
Hmm, during investigation error 171274 I faced in error in binding `this` & superCall in arrow function. ``` class A extends Object { constructor () { var arrow = () => { eval('super()'); print(this.id);} arrow(); } }; new A // ReferenceError: Cannot access uninitialized variable. But should be OK. ``` Before I was sure that we always load `this` from virtual scope in arrow function within constructor, but it is not true
Attachments
Patch (4.17 KB, patch)
2017-05-02 12:34 PDT, GSkachkov 		no flags
DetailsFormatted DiffDiff
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GSkachkov
Comment 1 2017-05-02 12:34:37 PDT
Created attachment 308841 [details] Patch Uplaoded fix
Saam Barati
Comment 2 2017-05-06 09:47:14 PDT
Comment on attachment 308841 [details] Patch r=me
WebKit Commit Bot
Comment 3 2017-05-06 10:16:15 PDT
Comment on attachment 308841 [details] Patch Clearing flags on attachment: 308841 Committed r216329: <http://trac.webkit.org/changeset/216329>
WebKit Commit Bot
Comment 4 2017-05-06 10:16:17 PDT
All reviewed patches have been landed. Closing bug.
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