tests/ui/unsized/unsized3.rs

   1 // Test sized-ness checking in substitution within fn bodies..
   2
   3 use std::marker;
   4
   5 // Unbounded.
   6 fn f1<X: ?Sized>(x: &X) {
   7     f2::<X>(x);
   8     //~^ ERROR the size for values of type
   9 }
  10 fn f2<X>(x: &X) {
  11 }
  12
  13 // Bounded.
  14 trait T {
  15     fn foo(&self) { }
  16 }
  17 fn f3<X: ?Sized + T>(x: &X) {
  18     f4::<X>(x);
  19     //~^ ERROR the size for values of type
  20 }
  21 fn f4<X: T>(x: &X) {
  22 }
  23
  24 fn f5<Y>(x: &Y) {}
  25 fn f6<X: ?Sized>(x: &X) {}
  26
  27 // Test with unsized struct.
  28 struct S<X: ?Sized> {
  29     x: X,
  30 }
  31
  32 fn f8<X: ?Sized>(x1: &S<X>, x2: &S<X>) {
  33     f5(x1);
  34     //~^ ERROR the size for values of type
  35     f6(x2); // ok
  36 }
  37
  38 // Test some tuples.
  39 fn f9<X: ?Sized>(x1: Box<S<X>>) {
  40     f5(&(*x1, 34));
  41     //~^ ERROR the size for values of type
  42 }
  43
  44 fn f10<X: ?Sized>(x1: Box<S<X>>) {
  45     f5(&(32, *x1));
  46     //~^ ERROR the size for values of type
  47     //~| ERROR the size for values of type
  48 }
  49
  50 pub fn main() {}