v8/include
Nico Hartmann 79efc8f090 Revert "[wasm-gc] Introduce wasm null object"
This reverts commit 2e357c4814.

Reason for revert: Speculative revert for https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Clusterfuzz%20Linux%20MSAN%20no%20origins/33231/overview

Original change's description:
> [wasm-gc] Introduce wasm null object
>
> We introduce a wasm null object, separate from JS null. Its purpose is
> to support trapping null accesses for wasm objects.
> This will be achieved by allocating a large payload for it (larger than
> any wasm struct) and memory-protecting it (see linked CL). The two null
> objects get mapped to each other at the wasm-JS boundary.
> Since externref objects live on the JS side of the boundary,
> null-related instructions in wasm now need an additional type argument
> to handle the correct null object.
>
> Bug: v8:7748
> Change-Id: I06da00fcd279cc5376e69ab7858e3782f5b5081e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4200639
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#85648}

Bug: v8:7748
Change-Id: Ie53febf49b946217e0057959c757d811a97ca1eb
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4219105
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#85649}
2023-02-03 16:57:44 +00:00
..
cppgc
libplatform
APIDesign.md
DEPS
DIR_METADATA
js_protocol-1.2.json
js_protocol-1.3.json
js_protocol.pdl
OWNERS
v8-array-buffer.h
v8-callbacks.h
v8-container.h
v8-context.h
v8-cppgc.h
v8-data.h
v8-date.h
v8-debug.h
v8-embedder-heap.h
v8-embedder-state-scope.h
v8-exception.h
v8-extension.h
v8-external.h
v8-fast-api-calls.h
v8-forward.h
v8-function-callback.h
v8-function.h
v8-initialization.h
v8-inspector-protocol.h
v8-inspector.h
v8-internal.h
v8-isolate.h
v8-json.h
v8-local-handle.h
v8-locker.h
v8-maybe.h
v8-memory-span.h
v8-message.h
v8-metrics.h
v8-microtask-queue.h
v8-microtask.h
v8-object.h
v8-persistent-handle.h
v8-platform.h
v8-primitive-object.h
v8-primitive.h
v8-profiler.h
v8-promise.h
v8-proxy.h
v8-regexp.h
v8-script.h
v8-snapshot.h
v8-statistics.h
v8-template.h
v8-traced-handle.h
v8-typed-array.h
v8-unwinder-state.h
v8-unwinder.h
v8-util.h
v8-value-serializer-version.h
v8-value-serializer.h
v8-value.h Revert "[wasm-gc] Introduce wasm null object" 2023-02-03 16:57:44 +00:00
v8-version-string.h
v8-version.h
v8-wasm-trap-handler-posix.h
v8-wasm-trap-handler-win.h
v8-wasm.h
v8-weak-callback-info.h
v8.h
v8config.h