| // RUN: %target-swift-frontend -emit-sil -verify %s -swift-version 4 | %FileCheck %s | |
| let arr = ["A", "B", "C"] | |
| let lazy: LazyMapCollection = arr.lazy.map { $0 } | |
| // CHECK: function_ref @$ss20LazySequenceProtocolPsE6filterys0a6FilterB0Vy8ElementsQzGSb7ElementQzcF | |
| _ = lazy.filter { $0 > "A" }.count |