Failed to produce diagnostic for expression on incorrect type name

[Zim999]

Description

The code below generates a "Failed to produce diagnostic for expression" error at the var body line.

The cause is the incorrect use of lowercase foo in the array declaration, and the compiler also generates the valid "Cannot find type 'foo' in scope" error on that line.

However, it should not generate the failed diagnostic message.

The issue can be reproduced by pasting the code into a playground.

Reproduction

import SwiftUI

struct Foo {
}

struct V: View {
    var body: some View {
        let foos: [foo]
    }
}

Expected behavior

The "Failed to produce diagnostic for expression" should not be generated

Environment

swift-driver version: 1.120.5 Apple Swift version 6.1.2 (swiftlang-6.1.2.1.2 clang-1700.0.13.5)
Target: arm64-apple-macosx15.0

And

swift-driver version: 1.127.4.2 Apple Swift version 6.2 (swiftlang-6.2.0.9.909 clang-1700.3.9.907)
Target: arm64-apple-macosx15.0

Additional information

No response