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Fix dynamic_cast (RTTI) by adding key function to ShadowNodeWrapper again #45290

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Fix dynamic_cast (RTTI) by adding key function to ShadowNodeWrapper again #45290

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9da4333
Fix dynamic_cast (RTTI) by adding key function to ShadowNodeWrapper a…
tomekzaw Jul 4, 2024
e537916
Update packages/react-native/ReactCommon/react/renderer/core/ShadowNo…
tomekzaw Jul 4, 2024
74a3566
Fix more typos
tomekzaw Jul 4, 2024
6f65687
Update comment
tomekzaw Jul 4, 2024
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6 changes: 6 additions & 0 deletions packages/react-native/ReactCommon/react/renderer/core/ShadowNode.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -410,4 +410,10 @@ SharedDebugStringConvertibleList ShadowNode::getDebugProps() const {
}
#endif

// Explicitly define destructors here, as they have to exist in order to act as a
// "key function" for the ShadowNodeWrapper class -- this allows for RTTI to work
// properly across dynamic library boundaries (i.e. dynamic_cast that is used by
// getNativeState method)
ShadowNodeWrapper::~ShadowNodeWrapper() = default;

} // namespace facebook::react
5 changes: 5 additions & 0 deletions packages/react-native/ReactCommon/react/renderer/core/ShadowNode.h
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Expand Up @@ -282,6 +282,11 @@ struct ShadowNodeWrapper : public jsi::NativeState {
explicit ShadowNodeWrapper(ShadowNode::Shared shadowNode)
: shadowNode(std::move(shadowNode)) {}

// The below method needs to be implemented out-of-line in order for the class
// to have at least one "key function" (see
// https://itanium-cxx-abi.github.io/cxx-abi/abi.html#vague-vtable)
~ShadowNodeWrapper() override;

ShadowNode::Shared shadowNode;
};

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6 changes: 3 additions & 3 deletions packages/react-native/ReactCommon/react/renderer/uimanager/UIManager.cpp
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Expand Up @@ -36,10 +36,10 @@ std::unique_ptr<facebook::react::LeakChecker> constructLeakCheckerIfNeeded(

namespace facebook::react {

// Explicitly define destructors here, as they to exist in order to act as a
// "key function" for the ShadowNodeWrapper class -- this allow for RTTI to work
// Explicitly define destructors here, as they have to exist in order to act as a
// "key function" for the ShadowNodeWrapper class -- this allows for RTTI to work
// properly across dynamic library boundaries (i.e. dynamic_cast that is used by
// isHostObject method)
// getNativeState method)
ShadowNodeListWrapper::~ShadowNodeListWrapper() = default;

UIManager::UIManager(
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