Bug 23075

Summary:

REGRESSION (r39164): Discarding quantifier on assertion gives incorrect result

Product:

WebKit

Reporter:

Lasse Reichstein Holst Nielsen <lrn>

Component:

JavaScriptCore

Assignee:

Geoffrey Garen <ggaren>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

barraclough, ggaren

Priority:

Keywords:

HasReduction, InRadar, Regression

Version:

528+ (Nightly build)

Hardware:

OS:

All

Attachments:

Description	Flags
patch	zwarich: review+

Description Lasse Reichstein Holst Nielsen 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.

Comment 1 Mark Rowe (bdash) 2009-01-02 12:43:44 PST

<rdar://problem/6471394>

Comment 2 Geoffrey Garen 2009-01-15 23:10:12 PST

Created attachment 26785 [details]
patch

Comment 3 Cameron Zwarich (cpst) 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.

Comment 4 Geoffrey Garen 2009-01-16 00:02:21 PST

Committed revision 39963.