| // RUN: %target-swift-frontend -enable-implicit-dynamic -target x86_64-apple-macosx10.9 -Onone -emit-ir %s | %FileCheck --check-prefix=MAYBE-AVAILABLE %s |
| // RUN: %target-swift-frontend -enable-implicit-dynamic -target %target-cpu-apple-macosx10.15 -Onone -emit-ir %s | %FileCheck --check-prefix=ALWAYS-AVAILABLE %s |
| // REQUIRES: OS=macosx |
| |
| protocol P {} |
| extension Int: P {} |
| |
| @available(macOS 10.15, *) |
| func foo() -> some P { |
| return 1738 |
| } |
| |
| @_silgen_name("external") |
| func generic<T: P>(x: T, y: T) |
| |
| @available(macOS 10.15, *) |
| public func main() { |
| generic(x: foo(), y: foo()) |
| } |
| |
| // MAYBE-AVAILABLE: declare{{.*}} extern_weak {{.*}} @swift_getOpaqueTypeConformance |
| // ALWAYS-AVAILABLE-NOT: declare{{.*}} extern_weak {{.*}} @swift_getOpaqueTypeConformance |
