[Webkit-unassigned] [Bug 242517] WebCore::Document::createDOMWindow() Conditional jump or move depends on uninitialised value(s)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=242517

Darin Adler <darin at apple.com> changed:

           What    |Removed                     |Added
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                 CC|                            |darin at apple.com

--- Comment #1 from Darin Adler <darin at apple.com> ---
This is because the deleted value for a GlobalWindowIdentifier sets the windowIdentifier but not the processIdentifier. Then we do a comparison and we don’t care that if the processIdentifier is uninitialized, because we know the windowIdentifier won’t be equal. We could quiet valgrind by changing HashTraits<WebCore::GlobalWindowIdentifier>::constructDeletedValue to initialize processIdentifier too, not just windowIdentifier, which would have a small but likely negligible performance cost, and no other effect on behavior.

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