duplicates:

• SR-487 Compiler fails to consider @autoclosure when satisfying try requirements

Issue Description:

I have a test that checks that some processing function doesn't throw, and this function is called inside some "completion" like closure:

me.request {
  XCTAssertNoThrow(try process($0))
}

The problem is that compiler thinks that I'm trying to call `me.request` with throwing closure, and doesn't allow me to do so. While it's completely valid thing in regular function body, I think that's a bug.

Basic code to reproduce:

func request(_: () -> Void) {}
func process() throws {}
func check(_: @autoclosure () throws -> Void) {}

// Invalid conversion
// from throwing function of type '() throws -> ()'
// to non-throwing function type '() -> Void'
request {
  check(try process())
}

// Completely valid
func foo() {
  check(try process())
}