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Benedikt Meurer authored
When passing promises from other contexts to an `await`, the --harmony-await-optimization doesn't kick in, and as such the promise will be wrapped in a "native promise" (from this context). That means the promises aren't chained immediately, but delayed via a PromiseResolveThenableJob, which chains these promises on the next turn of this contexts' microtask queue. If there's anything happening on the macro task queue in between this and the point when an exception is raised, the chaining will have happened and we actually find our way back via the promise chains. And this CL adds support for exactly that case. For other cases, it's currently impossible to reconstruct the async stack unfortunately, but we hope that this will help with the major use cases, where the developer awaits on I/O. Bug: v8:7522, v8:8673, v8:9487 Ref: nodejs/node#28680 Change-Id: Icc06c7df12644c2d8d43b6c7580ee06bb8f1024a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1701847 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#62709}
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