[SR-16113] Misplacing a Spacer() before ToolbarItemGroup results into compiler error: Failed to produce diagnostic for expression;

[wally4u]

Previous ID	SR-16113
Radar	None
Original Reporter	@wally4u
Type	Bug

Environment

Xcode Version 13.3 (13E113)

Target iOS 15.4

MBP 16" 2022

Additional Detail from JIRA

Votes	0
Component/s	Compiler
Labels	Bug
Assignee	None
Priority	Medium

md5: e96a77cac753636c32501dddacb4e816

Issue Description:

The following SwiftUI Code will generate the following error:

Failed to produce diagnostic for expression; please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project

While the code is incorrect, Spacer() should be placed within the ToolbarItemGroup, a non descriptive error is generated.

Code snippet

import SwiftUI

struct ContentView: View {
    @State var myFruit: String = ""    

var body: some View {
        NavigationView {
            Form {
                Section {
                    Text(myFruit)
                    TextField("Fruit", text: $myFruit)
                }
            }
            .toolbar {
                Spacer()   // should be inside ToolbarGroup
                ToolbarItemGroup(placement: .keyboard) {
//                    Spacer() // Correct location
                    Button("Spacer") {
                    }                }
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

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