deps: patch V8 to 7.9.317.23

Refs: https://github.com/v8/v8/compare/7.9.317.20...7.9.317.23

PR-URL: https://github.com/nodejs/node/pull/30560
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

3 files changed, 28 insertions, 2 deletions

diff --git a/deps/v8/src/objects/backing-store.cc b/deps/v8/src/objects/backing-store.cc
index 7f6d2251a7..cc6741765e 100644
--- a/deps/v8/src/objects/backing-store.cc
+++ b/deps/v8/src/objects/backing-store.cc
@@ -605,8 +605,14 @@ std::shared_ptr<BackingStore> GlobalBackingStoreRegistry::Lookup(
     return std::shared_ptr<BackingStore>();
   }
   auto backing_store = result->second.lock();
-  DCHECK_EQ(buffer_start, backing_store->buffer_start());
-  DCHECK_EQ(length, backing_store->byte_length());
+  CHECK_EQ(buffer_start, backing_store->buffer_start());
+  if (backing_store->is_wasm_memory()) {
+    // Grow calls to shared WebAssembly threads can be triggered from different
+    // workers, length equality cannot be guaranteed here.
+    CHECK_LE(length, backing_store->byte_length());
+  } else {
+    CHECK_EQ(length, backing_store->byte_length());
+  }
   return backing_store;
 }
 
diff --git a/deps/v8/src/objects/fixed-array.h b/deps/v8/src/objects/fixed-array.h
index 1963eef728..b9d644b492 100644
--- a/deps/v8/src/objects/fixed-array.h
+++ b/deps/v8/src/objects/fixed-array.h
@@ -338,6 +338,12 @@ class WeakArrayList : public HeapObject {
       Isolate* isolate, Handle<WeakArrayList> array,
       const MaybeObjectHandle& value);
 
+  // A version that adds to elements. This ensures that the elements are
+  // inserted atomically w.r.t GC.
+  V8_EXPORT_PRIVATE static Handle<WeakArrayList> AddToEnd(
+      Isolate* isolate, Handle<WeakArrayList> array,
+      const MaybeObjectHandle& value1, const MaybeObjectHandle& value2);
+
   inline MaybeObject Get(int index) const;
   inline MaybeObject Get(Isolate* isolate, int index) const;
 
diff --git a/deps/v8/src/objects/objects.cc b/deps/v8/src/objects/objects.cc
index ec4a8594f6..227cff8da4 100644
--- a/deps/v8/src/objects/objects.cc
+++ b/deps/v8/src/objects/objects.cc
@@ -3951,6 +3951,20 @@ Handle<WeakArrayList> WeakArrayList::AddToEnd(Isolate* isolate,
   return array;
 }
 
+Handle<WeakArrayList> WeakArrayList::AddToEnd(Isolate* isolate,
+                                              Handle<WeakArrayList> array,
+                                              const MaybeObjectHandle& value1,
+                                              const MaybeObjectHandle& value2) {
+  int length = array->length();
+  array = EnsureSpace(isolate, array, length + 2);
+  // Reload length; GC might have removed elements from the array.
+  length = array->length();
+  array->Set(length, *value1);
+  array->Set(length + 1, *value2);
+  array->set_length(length + 2);
+  return array;
+}
+
 bool WeakArrayList::IsFull() { return length() == capacity(); }
 
 // static