Wpe 2.38 dump info and crash for invalid handle backport#1632

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aoikonomopoulos wants to merge 5 commits intoWebPlatformForEmbedded:wpe-2.38from

aoikonomopoulos:wpe-2.38-dumpInfoAndCrashForInvalidHandle-backport

Commits on Mar 5, 2026

Make the MarkedBlock Footer a Header instead. https://bugs.webkit.org/show_bug.cgi?id=243932 <rdar://problem/98709256>

Mark Lam
authored and
aoikonomopoulos
committed
OBJECT_OFFSETOF can be constexp
aoikonomopoulos
committed
Add some investigation code for dumping additional info when MarkedBlock::Handle is invalid https://bugs.webkit.org/show_bug.cgi?id=280370 rdar://136782494

danlliu
authored and
aoikonomopoulos
committed
Various improvements to the aboutToMarkSlow instrumentation https://bugs.webkit.org/show_bug.cgi?id=283176 rdar://139971430

dhecht
authored and
aoikonomopoulos
committed
Enable dumpInfoAndCrashForInvalidHandleV2 on non-Cocoa
aoikonomopoulos
committed