FB13243190
Nested views wrapped in Link cause excessive CPU and memory usage
What type of feedback are you reporting? Incorrect/Unexpected Behavior
Please describe the issue and what steps we can take to reproduce it: When multiple nested views are wrapped inside Link, it causes excessive CPU and memory usage.
The attached sample code reproduces this issue.
- Open the project
- Run the
widgetsExtensionscheme from the project as-is (pre-configured to use the Release build config) - Observe spike in CPU and memory usage (this causes a excessive memory usage crash in production builds)
- Stop the run cycle
- Comment out all
Linkdeclarations, leaving theLink.Labelas-is, so the content continues to render - Run the
widgetsExtensionscheme, and observe no spike in CPU or memory usage
While the outermost Link should always take precedence (this behaviour is correctly observed), SwiftUI should then smartly skip evaluating inner Link declarations on only evaluate their labels, at-least for Widgets and complications.
Built using Xcode Version 15.0 (15A240d) (also observed with XC 15.1 Beta 1) on macOS 14.0 (23A344)