Bug 144261

Summary: Array#shift doesn't always move elements
Product: WebKit Reporter: Till Schneidereit <till>
Component: JavaScriptCoreAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: fpizlo, ggaren
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   

Description Till Schneidereit 2015-04-27 08:06:28 PDT 
When calling shift on a huge, mostly empty Array, other elements sometimes keep their index, even though the shift operation seemingly succeeds.

See the test case in https://bugzilla.mozilla.org/show_bug.cgi?id=1158767.