Unnamed parameters not supported in closures in Silver?

Elements Silver
1

The following results in an error, using 9.1.100.2081. If I replace the underbar with a named parameter, the error goes away.

class Test {
	 func foo() {
		let b: Bool = true
		let a: (Int) -> (Bool) = {_ in b}         // Error: closing bracket expected
		}
}
2

Thanks, logged as bugs://77019

3

bugs://77019 got closed with status fixed.

4

Logged as bugs://i64792.

5

bugs://i64792 was closed as fixed.