[Webkit-unassigned] [Bug 140917] Windows return -1 when calling vsnprintf with arguments that exceed target buffer size

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=140917

--- Comment #18 from Brent Fulgham <bfulgham at webkit.org> ---
(In reply to comment #9)
> This bug could have the following impacts:
> 
> 1. Our NSAPI plugin tests.
> 2. Tests involving EditingDelegate dump() operations.
> 3. Stuff passing through JSC's globalFuncEscape method.
> 4. JSC date functions (dateProtoFuncToISOString)
> 5. XML Document parser
> 6. Windows clipboard utilities.
> 7. TextStream/TextCodec clients
> 
> It will be interesting to see if any of the Windows JSC Date tests start
> working once this fix is in place.

I reran the JSC date function tests, but unfortunately did not see any progressions after applying this patch. Furthermore, the main test units have not shown any new progressions since this change.

So, this is a very useful fix but I don't think our test infrastructure was triggering any bad behavior due to this problem.

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