ios/Pods/Headers/Public/React-Core/React/RCTBridgeModule.h:132:1: Property with 'retain (or strong)' attribute must be of object type
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描述
iOS Xcode build fails with this Syntax error "ios/Pods/Headers/Public/React-Core/React/RCTBridgeModule.h:132:1: Property with 'retain (or strong)' attribute must be of object type"
Description
I am using this RCTBridgeModule to create my own custom bridge module for one of my application. Recently i migrated the app to latest react-native version 0.61.5. Now the iOS xcode build and react-native run ios command build gives me the error "ios/Pods/Headers/Public/React-Core/React/RCTBridgeModule.h:132:1: Property with 'retain (or strong)' attribute must be of object type". The build works fine when i removed the strong keyword from this line below. The strong or retain keyword is not required here as i see the variable methodQueue here is not an object.
https://github.com/facebook/react-native/blob/75a617827963fd53f5f36987677a992e137eaebf/React/Base/RCTBridgeModule.h#L146
See this link for more details on declaring dispatch_queue as a property after ARC - https://stackoverflow.com/questions/8904206/what-property-should-i-use-for-a-dispatch-queue-after-arc
React Native version:
info Fetching system and libraries information...
System:
OS: macOS 10.15.2
CPU: (8) x64 Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
Memory: 2.77 GB / 16.00 GB
Shell: 5.7.1 - /bin/zsh
Binaries:
Node: 12.14.1 - /usr/local/bin/node
Yarn: 1.21.1 - /usr/local/bin/yarn
npm: 6.13.4 - /usr/local/bin/npm
SDKs:
iOS SDK:
Platforms: iOS 13.6, DriverKit 19.0, macOS 10.15, tvOS 13.4, watchOS 6.2
Android SDK:
API Levels: 23, 25, 26, 28, 29
Build Tools: 28.0.3, 29.0.2
System Images: android-28 | Google APIs Intel x86 Atom
IDEs:
Android Studio: 3.6 AI-192.7142.36.36.6392135
Xcode: 11.6/11E708 - /usr/bin/xcodebuild
npmPackages:
react: 16.9.0 => 16.9.0
react-native: 0.61.5 => 0.61.5
npmGlobalPackages:
react-native-cli: 2.0.1
Steps To Reproduce
Provide a detailed list of steps that reproduce the issue.
- Use RCTBridgeModule to create some custom bridge module for a react-native application
- Build the iOS project after integrating the above custom module
- Xcode build fails with above syntax error
Expected Results
Xcode build should work fine without any syntax error
Snack, code example, screenshot, or link to a repository:
Please provide a Snack (https://snack.expo.io/), a link to a repository on GitHub, or provide a minimal code example that reproduces the problem.
You may provide a screenshot of the application if you think it is relevant to your bug report.
Here are some tips for providing a minimal example: https://stackoverflow.com/help/mcve
贡献指南
从这里开始
- 先读完整个 Issue,再读项目的贡献指南。
- 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
- Fork 仓库,在一个分支上完成修改。
- 提交 Pull Request,并在描述里引用这个 Issue 编号。
调研方向
从报告中链接的属性声明处开始查看 React/Base/RCTBridgeModule.h,然后使用 React Native 0.61.5、Xcode 11.6 和 iOS SDK 13.6 重现构建。将该声明与报告的 dispatch queue 行为进行比较,并验证自定义 RCTBridgeModule 能够成功构建,且不会出现属性类型语法错误。
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评估
- 技术栈
- ios, objective-c, react-native
- 领域
- mobile
- Issue 类型
- 缺陷
- 难度
- 3/5
- 预计耗时
- 1-2 天
- 活跃度
- 停滞
- 描述清晰度
- 基本清楚
- 新手友好度
- 35/100