Iceman

@swift-5.10.1 @swift-6.0.3

import Foundation func main() { var calendar = Calendar(identifier: .japanese) calendar.timeZone = TimeZone(secondsFromGMT: 9 * 3600)! let now = Date() let expected: Int = calendar.component(.hour, from: now) f(calendar) // Copy the calendar here and use it in backgrount thread. for _ in 0...100_000 { let v = calendar.component(.hour, from: now) if v != expected { print("bug! expected=\(expected), actual=\(v)") } } print("end") } func f(_ calendar: Calendar) { let comps = DateComponents( timeZone: TimeZone(secondsFromGMT: 0)!, year: 2022, month: 9, day: 1 ) DispatchQueue.global().async { for _ in 0...100_000 { _ = calendar.date(from: comps) } } } main()

exit status: 139 with

Stack dump: 0. Program arguments: /usr/bin/swift-frontend -frontend -interpret - -disable-objc-interop -new-driver-path /usr/bin/swift-driver -empty-abi-descriptor -resource-dir /usr/lib/swift -module-name main -plugin-path /usr/lib/swift/host/plugins -plugin-path /usr/local/lib/swift/host/plugins 1. Swift version 5.10.1 (swift-5.10.1-RELEASE)

stderr.log

6.37 KB