False Sendable warnings on valid code
The compiler emits false concurrency warnings about Sendable and isolation on code that is actually valid.
Tier II · Emerging Problems that are still building up.
3 public reports · first reported 8 December 2022 · last reported 9 June 2025
What's going wrong
The compiler reports concurrency warnings about Sendable and actor isolation on code that is valid, such as metatypes, optional notification values, and nonisolated unsafe properties.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 3 reports are about, and how many came each month.
- Related problems.
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