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Rollup merge of #69348 - LeSeulArtichaut:patch-1, r=Centril 

Wrong error message for move_ref_pattern

The current error message states that move occurs *because of `Copy`*:
```Rust
"move occurs because `{}` has type `{}` which does implement the `Copy` trait."
```
I found this randomly when surfing through the sources. This means, I don't have any context and might be completely wrong.

r? @Centril
This commit is contained in:
Dylan DPC 2020-02-22 18:43:04 +05:30 committed by GitHub
parent 1cb9fb5e16 38a22b8130
commit 8ab4060057
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6 changed files with 34 additions and 34 deletions
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2
src/librustc_mir_build/hair/pattern/check_match.rs
View File

@ -659,7 +659,7 @@ fn check_borrow_conflicts_in_at_patterns(cx: &MatchVisitor<'_, '_>, pat: &Pat<'_
});
if !conflicts_ref.is_empty() {
let occurs_because = format!(
"move occurs because `{}` has type `{}` which does implement the `Copy` trait",
"move occurs because `{}` has type `{}` which does not implement the `Copy` trait",
name,
tables.node_type(pat.hir_id),
);

4
src/test/ui/pattern/bindings-after-at/bind-by-move-neither-can-live-while-the-other-survives-1.stderr
View File

@ -15,7 +15,7 @@ LL | Some(_z @ ref _y) => {}
| | |
| | value borrowed here after move
| value moved into `_z` here
| move occurs because `_z` has type `X` which does implement the `Copy` trait
| move occurs because `_z` has type `X` which does not implement the `Copy` trait
error: cannot move out of value because it is borrowed
--> $DIR/bind-by-move-neither-can-live-while-the-other-survives-1.rs:29:14
@ -34,7 +34,7 @@ LL | Some(_z @ ref mut _y) => {}
| | |
| | value borrowed here after move
| value moved into `_z` here
| move occurs because `_z` has type `X` which does implement the `Copy` trait
| move occurs because `_z` has type `X` which does not implement the `Copy` trait
error[E0382]: borrow of moved value
--> $DIR/bind-by-move-neither-can-live-while-the-other-survives-1.rs:21:19

2
src/test/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref-inverse-promotion.stderr
View File

@ -6,7 +6,7 @@ LL | let a @ ref b = U;
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `main::U` which does implement the `Copy` trait
| move occurs because `a` has type `main::U` which does not implement the `Copy` trait
error: aborting due to previous error

50
src/test/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref-inverse.stderr
View File

@ -6,7 +6,7 @@ LL | let a @ ref b = U;
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `main::U` which does implement the `Copy` trait
| move occurs because `a` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:31:9
@ -17,7 +17,7 @@ LL | let a @ (mut b @ ref mut c, d @ ref e) = (U, U);
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `(main::U, main::U)` which does implement the `Copy` trait
| move occurs because `a` has type `(main::U, main::U)` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:31:14
@ -27,7 +27,7 @@ LL | let a @ (mut b @ ref mut c, d @ ref e) = (U, U);
| | |
| | value borrowed here after move
| value moved into `b` here
| move occurs because `b` has type `main::U` which does implement the `Copy` trait
| move occurs because `b` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:31:33
@ -37,7 +37,7 @@ LL | let a @ (mut b @ ref mut c, d @ ref e) = (U, U);
| | |
| | value borrowed here after move
| value moved into `d` here
| move occurs because `d` has type `main::U` which does implement the `Copy` trait
| move occurs because `d` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:38:9
@ -48,7 +48,7 @@ LL | let a @ [ref mut b, ref c] = [U, U];
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `[main::U; 2]` which does implement the `Copy` trait
| move occurs because `a` has type `[main::U; 2]` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:41:9
@ -58,7 +58,7 @@ LL | let a @ ref b = u();
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `main::U` which does implement the `Copy` trait
| move occurs because `a` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:44:9
@ -69,7 +69,7 @@ LL | let a @ (mut b @ ref mut c, d @ ref e) = (u(), u());
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `(main::U, main::U)` which does implement the `Copy` trait
| move occurs because `a` has type `(main::U, main::U)` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:44:14
@ -79,7 +79,7 @@ LL | let a @ (mut b @ ref mut c, d @ ref e) = (u(), u());
| | |
| | value borrowed here after move
| value moved into `b` here
| move occurs because `b` has type `main::U` which does implement the `Copy` trait
| move occurs because `b` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:44:33
@ -89,7 +89,7 @@ LL | let a @ (mut b @ ref mut c, d @ ref e) = (u(), u());
| | |
| | value borrowed here after move
| value moved into `d` here
| move occurs because `d` has type `main::U` which does implement the `Copy` trait
| move occurs because `d` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:51:9
@ -100,7 +100,7 @@ LL | let a @ [ref mut b, ref c] = [u(), u()];
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `[main::U; 2]` which does implement the `Copy` trait
| move occurs because `a` has type `[main::U; 2]` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:56:9
@ -110,7 +110,7 @@ LL | a @ Some(ref b) => {}
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `std::option::Option<main::U>` which does implement the `Copy` trait
| move occurs because `a` has type `std::option::Option<main::U>` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:61:9
@ -121,7 +121,7 @@ LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `std::option::Option<(main::U, main::U)>` which does implement the `Copy` trait
| move occurs because `a` has type `std::option::Option<(main::U, main::U)>` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:61:19
@ -131,7 +131,7 @@ LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| | |
| | value borrowed here after move
| value moved into `b` here
| move occurs because `b` has type `main::U` which does implement the `Copy` trait
| move occurs because `b` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:61:38
@ -141,7 +141,7 @@ LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| | |
| | value borrowed here after move
| value moved into `d` here
| move occurs because `d` has type `main::U` which does implement the `Copy` trait
| move occurs because `d` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:71:9
@ -152,7 +152,7 @@ LL | mut a @ Some([ref b, ref mut c]) => {}
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `std::option::Option<[main::U; 2]>` which does implement the `Copy` trait
| move occurs because `a` has type `std::option::Option<[main::U; 2]>` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:77:9
@ -162,7 +162,7 @@ LL | a @ Some(ref b) => {}
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `std::option::Option<main::U>` which does implement the `Copy` trait
| move occurs because `a` has type `std::option::Option<main::U>` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:83:9
@ -173,7 +173,7 @@ LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `std::option::Option<(main::U, main::U)>` which does implement the `Copy` trait
| move occurs because `a` has type `std::option::Option<(main::U, main::U)>` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:83:19
@ -183,7 +183,7 @@ LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| | |
| | value borrowed here after move
| value moved into `b` here
| move occurs because `b` has type `main::U` which does implement the `Copy` trait
| move occurs because `b` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:83:38
@ -193,7 +193,7 @@ LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| | |
| | value borrowed here after move
| value moved into `d` here
| move occurs because `d` has type `main::U` which does implement the `Copy` trait
| move occurs because `d` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:93:9
@ -204,7 +204,7 @@ LL | mut a @ Some([ref b, ref mut c]) => {}
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `std::option::Option<[main::U; 2]>` which does implement the `Copy` trait
| move occurs because `a` has type `std::option::Option<[main::U; 2]>` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:11
@ -214,7 +214,7 @@ LL | fn f1(a @ ref b: U) {}
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `main::U` which does implement the `Copy` trait
| move occurs because `a` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:18:11
@ -225,7 +225,7 @@ LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `(main::U, main::U)` which does implement the `Copy` trait
| move occurs because `a` has type `(main::U, main::U)` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:18:20
@ -235,7 +235,7 @@ LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| | |
| | value borrowed here after move
| value moved into `b` here
| move occurs because `b` has type `main::U` which does implement the `Copy` trait
| move occurs because `b` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:18:31
@ -245,7 +245,7 @@ LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| | |
| | value borrowed here after move
| value moved into `d` here
| move occurs because `d` has type `main::U` which does implement the `Copy` trait
| move occurs because `d` has type `main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:25:11
@ -256,7 +256,7 @@ LL | fn f3(a @ [ref mut b, ref c]: [U; 2]) {}
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `[main::U; 2]` which does implement the `Copy` trait
| move occurs because `a` has type `[main::U; 2]` which does not implement the `Copy` trait
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:31:22

8
src/test/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-twice.stderr
View File

@ -96,7 +96,7 @@ LL | let a @ (ref mut b, ref mut c) = (U, U);
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `(main::U, main::U)` which does implement the `Copy` trait
| move occurs because `a` has type `(main::U, main::U)` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-ref-mut-twice.rs:70:9
@ -108,7 +108,7 @@ LL | let a @ (b, [c, d]) = &mut val; // Same as ^--
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `&mut (main::U, [main::U; 2])` which does implement the `Copy` trait
| move occurs because `a` has type `&mut (main::U, [main::U; 2])` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-ref-mut-twice.rs:74:9
@ -118,7 +118,7 @@ LL | let a @ &mut ref mut b = &mut U;
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `&mut main::U` which does implement the `Copy` trait
| move occurs because `a` has type `&mut main::U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-ref-mut-twice.rs:77:9
@ -129,7 +129,7 @@ LL | let a @ &mut (ref mut b, ref mut c) = &mut (U, U);
| | | value borrowed here after move
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `&mut (main::U, main::U)` which does implement the `Copy` trait
| move occurs because `a` has type `&mut (main::U, main::U)` which does not implement the `Copy` trait
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:82:9

2
src/test/ui/pattern/bindings-after-at/default-binding-modes-both-sides-independent.stderr
View File

@ -33,7 +33,7 @@ LL | Ok(ref a @ b) | Err(b @ ref a) => {
| | |
| | value borrowed here after move
| value moved into `b` here
| move occurs because `b` has type `main::NotCopy` which does implement the `Copy` trait
| move occurs because `b` has type `main::NotCopy` which does not implement the `Copy` trait
error: cannot move out of value because it is borrowed
--> $DIR/default-binding-modes-both-sides-independent.rs:44:9