DatabaseUUIDEncodingStrategy is not concurrency-safe in Swift 6?

[adamek314]

I'm trying out MacOS 15 Sequoia, Xcode 16 beta and Swift 6. I get a warning at the following code:

extension Categories: TableRecord { static let databaseTableName: String = "categories" static let databaseUUIDEncodingStrategy = DatabaseUUIDEncodingStrategy.uppercaseString

The warning is:

Static property 'databaseUUIDEncodingStrategy' is not concurrency-safe because non-'Sendable' type 'DatabaseUUIDEncodingStrategy' may have shared mutable state

Any suggestions?

[adamek314]

Adding this code silenced the warning:

extension DatabaseUUIDEncodingStrategy: @unchecked @retroactive Sendable {
    
}

Although I'm still not sure why the system thinks that a static let property with an enum type is not concurrently-safe. I could understand it if it was a class instance.

[groue]

Hello @adamek314. A future GRDB version will remove those warnings. Until then, adding @unchecked Sendable is a correct workaround.

[groue]

Fixed in 3043d7d, shipped in v6.28.0