Bug 23075

Summary: REGRESSION (r39164): Discarding quantifier on assertion gives incorrect result
Product: WebKit Reporter: Lasse Reichstein Holst Nielsen <lrn>
Component: JavaScriptCoreAssignee: Geoffrey Garen <ggaren>
Status: RESOLVED FIXED    
Severity: Normal CC: barraclough, ggaren
Priority: P2 Keywords: HasReduction, InRadar, Regression
Version: 528+ (Nightly build)   
Hardware: PC   
OS: All   
Attachments:
Description Flags
patch zwarich: review+

Lasse Reichstein Holst Nielsen
Reported 2009-01-02 06:00:51 PST
The follwing javascript expression /^(?=a)?b$/.test("b") evaluates to false since changeset 39164. It should give true, both according to the ECMAScript specification and, e.g., what Firefox does.
Attachments
patch (6.24 KB, patch)
2009-01-15 23:10 PST, Geoffrey Garen 		zwarich: review+
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Mark Rowe (bdash)
Comment 1 2009-01-02 12:43:44 PST
<rdar://problem/6471394>
Geoffrey Garen
Comment 2 2009-01-15 23:10:12 PST
Created attachment 26785 [details] patch
Cameron Zwarich (cpst)
Comment 3 2009-01-15 23:49:05 PST
Comment on attachment 26785 [details] patch r=me, although you should also include the Bugzilla URL in the ChangeLogs.
Geoffrey Garen
Comment 4 2009-01-16 00:02:21 PST
Committed revision 39963.
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