[Webkit-unassigned] [Bug 185801] dump-class-layout reports wrong padding in many cases

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=185801

--- Comment #4 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
(In reply to Simon Fraser (smfr) from comment #1)
> There are various things wrong here (testing on JSC::PostfixNode)
> 1. lldb reports the size of zero-sized classes as 1, throwing off padding.
> 2. The script adds padding to nested classes even when the compiler compacts
> subsequent fields
> 3. The 'seenOffset' bailing is wrong.

4. We fail to dump the vtable in some cases, reporting it as padding.

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