Mark VillacampaI found a crasher when compiling with Swift 6 and running with Swift 5 runtime.
Filed an issue in the Swift repo in case other people experience the same problem or any Swift folks can take a look :)
Also FB13828346
Runtime crash when compiling with Swift 6 and running on Swift 5.X runtime · Issue #74333 · apple/swift
Description Using the version of Swift 6 bundled with Xcode 16 beta 1, the following two snippets of code compile and run fine in iOS 18 (sim/device) and macOS 15, but crash when run in iOS 17 (sim...