[Webkit-unassigned] [Bug 139129] New: document.all can be both 'function' and 'not function'

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=139129

            Bug ID: 139129
           Summary: document.all can be both 'function' and 'not function'
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: zimbabao at gmail.com

typeof document.all === 'function' return true 
and 
var type = typeof document.all;
type === 'function' will return false.

So if you combine two statements or keep them separate they return different answer.

This is happening because document.all is returned to be CallTypeHost.

>From spec https://html.spec.whatwg.org/#dom-document-all
"The user agent must act such that the typeof operator in JavaScript returns the string undefined when applied to the object returned for all."

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