rust/tests/ui/auto-traits
Esteban Küber d68f2a6b71 Mention when type parameter could be Clone
```
error[E0382]: use of moved value: `t`
  --> $DIR/use_of_moved_value_copy_suggestions.rs:7:9
   |
LL | fn duplicate_t<T>(t: T) -> (T, T) {
   |                   - move occurs because `t` has type `T`, which does not implement the `Copy` trait
...
LL |     (t, t)
   |      -  ^ value used here after move
   |      |
   |      value moved here
   |
help: if `T` implemented `Clone`, you could clone the value
  --> $DIR/use_of_moved_value_copy_suggestions.rs:4:16
   |
LL | fn duplicate_t<T>(t: T) -> (T, T) {
   |                ^ consider constraining this type parameter with `Clone`
...
LL |     (t, t)
   |      - you could clone this value
help: consider restricting type parameter `T`
   |
LL | fn duplicate_t<T: Copy>(t: T) -> (T, T) {
   |                 ++++++
```

The `help` is new. On ADTs, we also extend the output with span labels:

```
error[E0507]: cannot move out of static item `FOO`
  --> $DIR/issue-17718-static-move.rs:6:14
   |
LL |     let _a = FOO;
   |              ^^^ move occurs because `FOO` has type `Foo`, which does not implement the `Copy` trait
   |
note: if `Foo` implemented `Clone`, you could clone the value
  --> $DIR/issue-17718-static-move.rs:1:1
   |
LL | struct Foo;
   | ^^^^^^^^^^ consider implementing `Clone` for this type
...
LL |     let _a = FOO;
   |              --- you could clone this value
help: consider borrowing here
   |
LL |     let _a = &FOO;
   |              +
```
2024-04-24 22:21:15 +00:00
..
auto-is-contextual.rs [AUTO-GENERATED] Migrate ui tests from // to //@ directives 2024-02-16 20:02:50 +00:00
auto-trait-projection-recursion.rs [AUTO-GENERATED] Migrate ui tests from // to //@ directives 2024-02-16 20:02:50 +00:00
auto-trait-validation.fixed [AUTO-GENERATED] Migrate ui tests from // to //@ directives 2024-02-16 20:02:50 +00:00
auto-trait-validation.rs [AUTO-GENERATED] Migrate ui tests from // to //@ directives 2024-02-16 20:02:50 +00:00
auto-trait-validation.stderr Update tests 2024-02-07 10:42:01 +08:00
auto-traits.rs [AUTO-GENERATED] Migrate ui tests from // to //@ directives 2024-02-16 20:02:50 +00:00
auto-traits.stderr Update tests 2024-02-07 10:42:01 +08:00
bad-generics-on-dyn.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
bad-generics-on-dyn.stderr Show number in error message even for one error 2023-11-24 19:15:52 +01:00
has-arguments.rs Extend builtin/auto trait args with error when they have >1 argument 2023-11-06 21:29:08 +00:00
has-arguments.stderr Show number in error message even for one error 2023-11-24 19:15:52 +01:00
issue-23080-2.current.stderr Ignore tests w/ current/next revisions from compare-mode=next-solver 2024-03-10 21:18:41 -04:00
issue-23080-2.next.stderr Ignore tests w/ current/next revisions from compare-mode=next-solver 2024-03-10 21:18:41 -04:00
issue-23080-2.rs Ignore tests w/ current/next revisions from compare-mode=next-solver 2024-03-10 21:18:41 -04:00
issue-23080.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue-23080.stderr Show number in error message even for one error 2023-11-24 19:15:52 +01:00
issue-83857-ub.rs Remove suspicious auto trait lint 2024-02-19 17:41:48 -03:00
issue-83857-ub.stderr Remove suspicious auto trait lint 2024-02-19 17:41:48 -03:00
issue-84075.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue-84075.stderr Show number in error message even for one error 2023-11-24 19:15:52 +01:00
issue-117789.rs Remove suspicious auto trait lint 2024-02-19 17:41:48 -03:00
issue-117789.stderr Remove suspicious auto trait lint 2024-02-19 17:41:48 -03:00
pre-cfg.rs [AUTO-GENERATED] Migrate ui tests from // to //@ directives 2024-02-16 20:02:50 +00:00
pre-cfg.stderr Bless tests 2024-01-13 12:46:58 -05:00
str-contains-slice-conceptually.rs Treat str as containing [u8] for auto trait purposes 2023-02-25 20:01:33 +00:00
str-contains-slice-conceptually.stderr Provide more context on derived obligation error primary label 2024-01-30 21:28:18 +00:00
typeck-auto-trait-no-supertraits-2.rs Continue to borrowck even if there were previous errors 2024-02-08 08:10:43 +00:00
typeck-auto-trait-no-supertraits-2.stderr Mention when type parameter could be Clone 2024-04-24 22:21:15 +00:00
typeck-auto-trait-no-supertraits.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
typeck-auto-trait-no-supertraits.stderr Show number in error message even for one error 2023-11-24 19:15:52 +01:00
typeck-default-trait-impl-constituent-types-2.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
typeck-default-trait-impl-constituent-types-2.stderr Provide more context on derived obligation error primary label 2024-01-30 21:28:18 +00:00
typeck-default-trait-impl-constituent-types.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
typeck-default-trait-impl-constituent-types.stderr Show number in error message even for one error 2023-11-24 19:15:52 +01:00
typeck-default-trait-impl-negation.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
typeck-default-trait-impl-negation.stderr Move /src/test to /tests 2023-01-11 09:32:08 +00:00
typeck-default-trait-impl-precedence.rs Use root obligation on E0277 for some cases 2024-03-03 18:53:35 +00:00
typeck-default-trait-impl-precedence.stderr Use root obligation on E0277 for some cases 2024-03-03 18:53:35 +00:00