struct Wrapper(T); fn foo(foo: Wrapper) //~^ ERROR the size for values of type `T` cannot be known at compilation time where T : ? Sized { // } fn bar(foo: Wrapper) //~^ ERROR the size for values of type `T` cannot be known at compilation time where T: ?Sized { // } fn qux(foo: Wrapper) //~^ ERROR the size for values of type `T` cannot be known at compilation time where T: ?Sized { // } fn main() {}