Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/36258
This fixes a few instances where YogaLayoutableShadowNode (or general shadownode casting) could offer better memory safety.
1. The reference form of traitCast() now terminates on invalid cast, instead of debug assert, since it is better to crash in production than to corrupt memory (which will crash somewhere later, in a much more confusing way).
2. We use traitCast() in more places where we previously would static_cast. This means needing to formally add a mutable version.
3. We bounds-check yoga children access in a single place by using `std::vector` `at()` instead of `[]`.
4. Removed `Trait::UnreservedTrait1` API, since multiple libraries using it can collide and we lose the memory safety benefits of `traitCast`.
This change is in response to a bug where `YogaLayoutableShadowNode` may perform an invalid `static_cast` of `RawTextShadowNode` if a text or number is rendered directly inside of a `<View>` (instead of a `<Text>` element).
This does not yet fix the underlying logic of YogaLayoutableShadowNode to act gracefully when a RawTextShadowNode makes its way into children. We just terminate, instead of corrupting memory.
Changelog:
[General][Breaking] - Better Fabric ShadowNode Memory Safety (Removes `Trait::UnreservedTrait` API)
Reviewed By: javache
Differential Revision: D43271779
fbshipit-source-id: 727c1230f72664bf4d261871c66ca61ddf0d5ffa
Summary:
changelog: [internal]
Add more clang tidy rules to prevent common class of bugs.
Reviewed By: javache
Differential Revision: D39245194
fbshipit-source-id: 5521c5c4653d7005b96ebba494e810ba5075afbc
Summary:
Adding runtime type information adds greatly to the binary size, so react-native-windows builds without it. But some parts of the fabric code currently uses dynamic_cast, which means to use fabric we have to build with RTTI turned on. This PR removes the usages of dynamic_cast that are hit in release builds, which should allow react-native-windows to turn off RTTI in release builds.
Required for: https://github.com/microsoft/react-native-windows/issues/7981
One thing to note, the comment in ShadowNodeTraits indicates that core was reserving the first 16 bits. I'm adding two more. Is that ok? Should core be reserving more for future use?
## Changelog
<!-- Help reviewers and the release process by writing your own changelog entry. For an example, see:
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[Internal] [Fixed] - Remove uses of dynamic_cast in release builds
Pull Request resolved: https://github.com/facebook/react-native/pull/31694
Test Plan:
Verified that I can build react-native-windows with Fabric in release, without RTTI.
Boot / clicked around in RNW RNTester
Reviewed By: sammy-SC
Differential Revision: D29040383
Pulled By: JoshuaGross
fbshipit-source-id: e49286e59c4ba54faf0b4de5e244dfa1f7c3f193
Summary:
This diff flattens the hierarchy of Text C++ files.
This is required to integrate Text into RN OSS
changelog: [internal] internal
Reviewed By: JoshuaGross
Differential Revision: D23173556
fbshipit-source-id: ce90000cae147460aa4ddad55b7c90369fa734a2
Nick Gerleman
Samuel Susla
Samuel Susla
Andres Suarez
CodemodService FBSourceClangFormatLinterBot
Andrew Coates
David Vacca