src/test/ui/unsized/unsized-struct.stderr

   1 error[E0277]: the size for values of type `T` cannot be known at compilation time
   2   --> $DIR/unsized-struct.rs:6:36
   3    |
   4 LL | struct Foo<T> { data: T }
   5    |            - required by this bound in `Foo`
   6 LL | fn foo1<T>() { not_sized::<Foo<T>>() } // Hunky dory.
   7 LL | fn foo2<T: ?Sized>() { not_sized::<Foo<T>>() }
   8    |         -                          ^^^^^^ doesn't have a size known at compile-time
   9    |         |
  10    |         this type parameter needs to be `Sized`
  11    |
  12 help: you could relax the implicit `Sized` bound on `T` if it were used through indirection like `&T` or `Box<T>`
  13   --> $DIR/unsized-struct.rs:4:12
  14    |
  15 LL | struct Foo<T> { data: T }
  16    |            ^          - ...if indirection were used here: `Box<T>`
  17    |            |
  18    |            this could be changed to `T: ?Sized`...
  19
  20 error[E0277]: the size for values of type `T` cannot be known at compilation time
  21   --> $DIR/unsized-struct.rs:13:24
  22    |
  23 LL | fn is_sized<T:Sized>() { }
  24    |             - required by this bound in `is_sized`
  25 ...
  26 LL | fn bar2<T: ?Sized>() { is_sized::<Bar<T>>() }
  27    |         -              ^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
  28    |         |
  29    |         this type parameter needs to be `Sized`
  30    |
  31    = note: required because it appears within the type `Bar<T>`
  32
  33 error: aborting due to 2 previous errors
  34
  35 For more information about this error, try `rustc --explain E0277`.