src/test/ui/moves/use_of_moved_value_copy_suggestions.rs

   1 // run-rustfix
   2 #![allow(dead_code)]
   3
   4 fn duplicate_t<T>(t: T) -> (T, T) {
   5     //~^ HELP consider restricting type parameter `T`
   6     (t, t) //~ use of moved value: `t`
   7 }
   8
   9 fn duplicate_opt<T>(t: Option<T>) -> (Option<T>, Option<T>) {
  10     //~^ HELP consider restricting type parameter `T`
  11     (t, t) //~ use of moved value: `t`
  12 }
  13
  14 fn duplicate_tup1<T>(t: (T,)) -> ((T,), (T,)) {
  15     //~^ HELP consider restricting type parameter `T`
  16     (t, t) //~ use of moved value: `t`
  17 }
  18
  19 fn duplicate_tup2<A, B>(t: (A, B)) -> ((A, B), (A, B)) {
  20     //~^ HELP consider restricting type parameters
  21     (t, t) //~ use of moved value: `t`
  22 }
  23
  24 fn duplicate_custom<T>(t: S<T>) -> (S<T>, S<T>) {
  25     //~^ HELP consider restricting type parameter `T`
  26     (t, t) //~ use of moved value: `t`
  27 }
  28
  29 struct S<T>(T);
  30 trait Trait {}
  31 impl<T: Trait + Clone> Clone for S<T> {
  32     fn clone(&self) -> Self {
  33         Self(self.0.clone())
  34     }
  35 }
  36 impl<T: Trait + Copy> Copy for S<T> {}
  37
  38 trait A {}
  39 trait B {}
  40
  41 // Test where bounds are added with different bound placements
  42 fn duplicate_custom_1<T>(t: S<T>) -> (S<T>, S<T>) where {
  43     //~^ HELP consider restricting type parameter `T`
  44     (t, t) //~ use of moved value: `t`
  45 }
  46
  47 fn duplicate_custom_2<T>(t: S<T>) -> (S<T>, S<T>)
  48 where
  49     T: A,
  50     //~^ HELP consider further restricting this bound
  51 {
  52     (t, t) //~ use of moved value: `t`
  53 }
  54
  55 fn duplicate_custom_3<T>(t: S<T>) -> (S<T>, S<T>)
  56 where
  57     T: A,
  58     //~^ HELP consider further restricting this bound
  59     T: B,
  60 {
  61     (t, t) //~ use of moved value: `t`
  62 }
  63
  64 fn duplicate_custom_4<T: A>(t: S<T>) -> (S<T>, S<T>)
  65 //~^ HELP consider further restricting this bound
  66 where
  67     T: B,
  68 {
  69     (t, t) //~ use of moved value: `t`
  70 }
  71
  72 #[rustfmt::skip]
  73 fn existing_colon<T:>(t: T) {
  74     //~^ HELP consider restricting type parameter `T`
  75     [t, t]; //~ use of moved value: `t`
  76 }
  77
  78 fn existing_colon_in_where<T>(t: T)
  79 where
  80     T:,
  81     //~^ HELP consider further restricting type parameter `T`
  82 {
  83     [t, t]; //~ use of moved value: `t`
  84 }
  85
  86 fn main() {}