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[v26.x] deps: V8: cherry-pick c21a93ec80d5 #66729

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[v26.x] deps: V8: cherry-pick c21a93ec80d5 #66729

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2 changes: 1 addition & 1 deletion common.gypi
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@

# Reset this number to 0 on major V8 upgrades.
# Increment by one for each non-official patch applied to deps/v8.
'v8_embedder_string': '-node.39',
'v8_embedder_string': '-node.40',

##### V8 defaults for Node.js #####

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4 changes: 4 additions & 0 deletions deps/v8/src/objects/code.cc
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Expand Up @@ -226,6 +226,10 @@ void Code::SetMarkedForDeoptimization(Isolate* isolate,
} else {
jdt.SetCodeNoWriteBarrier(handle, *BUILTIN_CODE(isolate, CompileLazy));
}
// TODO(olivf, 525686865): Fix the race in dispatch handle marking by
// going back to a CAS loop.
static_assert(JSDispatchTable::kWriteBarrierSetsEntryMarkBit);
jdt.Mark(handle);
}
// Ensure we don't try to patch the entry multiple times.
set_js_dispatch_handle(kNullJSDispatchHandle);
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