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src: do not crash when accessing empty WeakRefs #29289

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src: do not crash when accessing empty WeakRefs #29289

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4 changes: 3 additions & 1 deletion src/node_util.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -191,14 +191,16 @@ class WeakReference : public BaseObject {

static void IncRef(const FunctionCallbackInfo<Value>& args) {
WeakReference* weak_ref = Unwrap<WeakReference>(args.Holder());
if (weak_ref->reference_count_ == 0) weak_ref->target_.ClearWeak();
weak_ref->reference_count_++;
if (weak_ref->target_.IsEmpty()) return;
if (weak_ref->reference_count_ == 1) weak_ref->target_.ClearWeak();
}

static void DecRef(const FunctionCallbackInfo<Value>& args) {
WeakReference* weak_ref = Unwrap<WeakReference>(args.Holder());
CHECK_GE(weak_ref->reference_count_, 1);
weak_ref->reference_count_--;
if (weak_ref->target_.IsEmpty()) return;
if (weak_ref->reference_count_ == 0) weak_ref->target_.SetWeak();
}

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