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fix: object lifetime bugs in sharedTexture, service-worker ipcRenderer and utilityProcess.fork() - #53278
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The native side of utilityProcess.fork() read options.stdio into a std::vector and then indexed the first three entries unconditionally, with no default for unrecognised values. An array that validates in JS but yields fewer elements (or different strings) when gin re-reads it would index past the end of the vector and leave IOType uninitialised. Clamp to the vector's size, fall back to the default configuration for missing slots, and treat unknown values as inherit. Co-authored-by: Sam Attard <sattard@anthropic.com>
…reachable The native wrapper behind sharedTexture.subtle.importSharedTexture() was freed from a weak callback on the returned object, but the release / getVideoFrame / startTransferSharedTexture / getFrameCreationSyncToken / setReleaseSyncToken functions all hold the same raw pointer through a shared v8::External. Retaining one of those functions after dropping the object let the wrapper be deleted underneath it. Key the weak callback on the External instead, which every method keeps alive, and make release() a no-op once the reference has already been dropped. Co-authored-by: Sam Attard <sattard@anthropic.com>
IPCServiceWorker is a cppgc-managed object that adds itself to the current worker thread's content::WorkerThread observer list in its constructor but never removed itself. If the object was swept by a worker-isolate GC before the thread shut down, WorkerThreadRegistry would later dispatch WillStopCurrentWorkerThread() through a dangling pointer. Add a prefinalizer, mirroring IPCRenderFrame, that removes the observer while the per-thread registry is still alive. Co-authored-by: Sam Attard <sattard@anthropic.com>
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Aug 28, 2026
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Backport of #53259
See that PR for details.
Notes: Fixed crashes in sharedTexture, service-worker ipcRenderer and utilityProcess.fork() caused by object lifetime bugs.