// RUN: %target-swift-frontend %s -emit-ir -verify // Verify we don't crash on this. // rdar://15595118 infix operator ~> protocol Target {} func ~> (x: inout Target, f: @escaping (_: inout Target, _: Arg0) -> Result) -> (Arg0) -> Result { return { f(&x, $0) } // expected-error {{escaping closures can only capture inout parameters explicitly by value}} } func ~> (x: inout Int, f: @escaping (_: inout Int, _: Target) -> Target) -> (Target) -> Target { return { f(&x, $0) } // expected-error {{escaping closures can only capture inout parameters explicitly by value}} }