[Webkit-unassigned] [Bug 87826] We should use NaN or separate boolean flag for null Date value

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=87826





--- Comment #1 from Kent Tamura <tkent at chromium.org>  2012-05-30 01:07:14 PST ---
(In reply to comment #0)
> Currently we use the value 0 (in double) to indicate uninitialized or invalid Date value at several places, but this could be a valid date value as 0 epoch time (i.e. Jan 1 1970) and the binding code just returns Date(0) unless we use custom binding, while null should be returned instead.
> 
> We should probably use NaN instead 0 (which is automatically converted to Date null) to indicate uninitialized Date value, or should have some binding machinery support to return null.

Our binding code already supports NaN -> null Date mapping.

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