I've encountered an issue where storing a throws(PermissionError) closure as a property inside a SwiftUI View causes a runtime crash on iOS 17, while it works correctly on iOS 18.
Here’s an example of the affected code:
enum PermissionError: Error {
case denied
}
struct PermissionCheckedView<AllowedContent: View, DeniedContent: View>: View {
var protectedView: () throws(PermissionError) -> AllowedContent
var deniedView: (PermissionError) -> DeniedContent
init(
@ViewBuilder protectedView: @escaping () throws(PermissionError) -> AllowedContent,
@ViewBuilder deniedView: @escaping (PermissionError) -> DeniedContent
) {
self.protectedView = protectedView
self.deniedView = deniedView
}
public var body: some View {
switch Result(catching: protectedView) {
case .success(let content): content
case .failure(let error): deniedView(error)
}
}
}
@main
struct TestApp: App {
var body: some Scene {
WindowGroup {
PermissionCheckedView {
} deniedView: { _ in
}
}
}
}
Specifically this is the stack trace (sorry for the picture I didn't know how to get the txt):
If I use var protectedView: () throws -> AllowedContent without typed throws it works.
rico95
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
4 days ago
User for
7 years
Post
Replies
Boosts
Views
Activity
I need to read results of a test in Xcode post-action of Test.
So the script that runs after tests contains
SUMMARY=$(xcrun xcresulttool get test-results summary --path $RESULT_FILE 2>> "$LOGS")
If I run my script from terminal, everything is ok but if I launch tests and the post-action is executed, I got
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Error: Failed to create a new result bundle reader, underlying error: failed to read metadata with underlying error (type: FileSystemError: 3 - [:] - The operation couldn’t be completed. (MinimalTSCBasic.FileSystemError error 3.)
Usage: xcresulttool <subcommand>
See 'xcresulttool --help' for more information.
It might be that the environment set by Xcode is missing something but I cannot figure out what, any idea?