diff options
Diffstat (limited to 'tests/ui/pattern')
18 files changed, 461 insertions, 340 deletions
diff --git a/tests/ui/pattern/bindings-after-at/borrowck-pat-at-and-box-pass.rs b/tests/ui/pattern/bindings-after-at/borrowck-pat-at-and-box-pass.rs index fbdefd9d3..43b53b7cf 100644 --- a/tests/ui/pattern/bindings-after-at/borrowck-pat-at-and-box-pass.rs +++ b/tests/ui/pattern/bindings-after-at/borrowck-pat-at-and-box-pass.rs @@ -2,6 +2,9 @@ // Test `@` patterns combined with `box` patterns. +#![allow(dropping_references)] +#![allow(dropping_copy_types)] + #![feature(box_patterns)] #[derive(Copy, Clone)] diff --git a/tests/ui/pattern/bindings-after-at/borrowck-pat-at-and-box.stderr b/tests/ui/pattern/bindings-after-at/borrowck-pat-at-and-box.stderr index 9305facc4..3ce48b1a7 100644 --- a/tests/ui/pattern/bindings-after-at/borrowck-pat-at-and-box.stderr +++ b/tests/ui/pattern/bindings-after-at/borrowck-pat-at-and-box.stderr @@ -54,14 +54,6 @@ LL | ref mut a @ box ref b => { | | | value is mutably borrowed by `a` here -error: cannot borrow value as immutable because it is also borrowed as mutable - --> $DIR/borrowck-pat-at-and-box.rs:54:11 - | -LL | fn f5(ref mut a @ box ref b: Box<NC>) { - | ^^^^^^^^^ ----- value is borrowed by `b` here - | | - | value is mutably borrowed by `a` here - error[E0382]: borrow of moved value --> $DIR/borrowck-pat-at-and-box.rs:31:9 | @@ -120,6 +112,14 @@ LL | ref mut a @ box ref b => { LL | drop(b); | - immutable borrow later used here +error: cannot borrow value as immutable because it is also borrowed as mutable + --> $DIR/borrowck-pat-at-and-box.rs:54:11 + | +LL | fn f5(ref mut a @ box ref b: Box<NC>) { + | ^^^^^^^^^ ----- value is borrowed by `b` here + | | + | value is mutably borrowed by `a` here + error[E0502]: cannot borrow value as mutable because it is also borrowed as immutable --> $DIR/borrowck-pat-at-and-box.rs:54:11 | diff --git a/tests/ui/pattern/bindings-after-at/borrowck-pat-by-copy-bindings-in-at.rs b/tests/ui/pattern/bindings-after-at/borrowck-pat-by-copy-bindings-in-at.rs index 0108861cf..1df51c0ed 100644 --- a/tests/ui/pattern/bindings-after-at/borrowck-pat-by-copy-bindings-in-at.rs +++ b/tests/ui/pattern/bindings-after-at/borrowck-pat-by-copy-bindings-in-at.rs @@ -2,6 +2,8 @@ // Test `Copy` bindings in the rhs of `@` patterns. +#![allow(dropping_copy_types)] + #[derive(Copy, Clone)] struct C; diff --git a/tests/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref-inverse.stderr b/tests/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref-inverse.stderr index 13989ebad..1ed019f0a 100644 --- a/tests/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref-inverse.stderr +++ b/tests/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref-inverse.stderr @@ -286,78 +286,6 @@ help: borrow this binding in the pattern to avoid moving the value LL | ref mut a @ Some([ref b, ref mut c]) => {} | +++ -error: borrow of moved value - --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:11:11 - | -LL | fn f1(a @ ref b: U) {} - | ^ ----- value borrowed here after move - | | - | value moved into `a` here - | move occurs because `a` has type `U` which does not implement the `Copy` trait - | -help: borrow this binding in the pattern to avoid moving the value - | -LL | fn f1(ref a @ ref b: U) {} - | +++ - -error: borrow of moved value - --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:11 - | -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 `(U, U)` which does not implement the `Copy` trait - | -help: borrow this binding in the pattern to avoid moving the value - | -LL | fn f2(ref mut a @ (b @ ref c, mut d @ ref e): (U, U)) {} - | +++ - -error: borrow of moved value - --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:20 - | -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 `U` which does not implement the `Copy` trait - | -help: borrow this binding in the pattern to avoid moving the value - | -LL | fn f2(mut a @ (ref b @ ref c, mut d @ ref e): (U, U)) {} - | +++ - -error: borrow of moved value - --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:31 - | -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 `U` which does not implement the `Copy` trait - | -help: borrow this binding in the pattern to avoid moving the value - | -LL | fn f2(mut a @ (b @ ref c, ref mut d @ ref e): (U, U)) {} - | +++ - -error: borrow of moved value - --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:19:11 - | -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 `[U; 2]` which does not implement the `Copy` trait - | -help: borrow this binding in the pattern to avoid moving the value - | -LL | fn f3(ref a @ [ref mut b, ref c]: [U; 2]) {} - | +++ - error[E0382]: use of partially moved value --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:24:9 | @@ -447,6 +375,63 @@ LL | mut a @ Some([ref b, ref mut c]) => {} | | | value moved here +error: borrow of moved value + --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:11:11 + | +LL | fn f1(a @ ref b: U) {} + | ^ ----- value borrowed here after move + | | + | value moved into `a` here + | move occurs because `a` has type `U` which does not implement the `Copy` trait + | +help: borrow this binding in the pattern to avoid moving the value + | +LL | fn f1(ref a @ ref b: U) {} + | +++ + +error: borrow of moved value + --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:11 + | +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 `(U, U)` which does not implement the `Copy` trait + | +help: borrow this binding in the pattern to avoid moving the value + | +LL | fn f2(ref mut a @ (b @ ref c, mut d @ ref e): (U, U)) {} + | +++ + +error: borrow of moved value + --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:20 + | +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 `U` which does not implement the `Copy` trait + | +help: borrow this binding in the pattern to avoid moving the value + | +LL | fn f2(mut a @ (ref b @ ref c, mut d @ ref e): (U, U)) {} + | +++ + +error: borrow of moved value + --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:31 + | +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 `U` which does not implement the `Copy` trait + | +help: borrow this binding in the pattern to avoid moving the value + | +LL | fn f2(mut a @ (b @ ref c, ref mut d @ ref e): (U, U)) {} + | +++ + error[E0382]: use of partially moved value --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:11 | @@ -457,6 +442,21 @@ LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {} | = note: partial move occurs because value has type `U`, which does not implement the `Copy` trait +error: borrow of moved value + --> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:19:11 + | +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 `[U; 2]` which does not implement the `Copy` trait + | +help: borrow this binding in the pattern to avoid moving the value + | +LL | fn f3(ref a @ [ref mut b, ref c]: [U; 2]) {} + | +++ + error: aborting due to 33 previous errors For more information about this error, try `rustc --explain E0382`. diff --git a/tests/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref.stderr b/tests/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref.stderr index 00593b2a9..c8c4d9b8f 100644 --- a/tests/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref.stderr +++ b/tests/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref.stderr @@ -166,48 +166,6 @@ LL | ref mut a @ Some([b, mut c]) => {} | | value is moved into `b` here | value is mutably borrowed by `a` here -error: cannot move out of value because it is borrowed - --> $DIR/borrowck-pat-by-move-and-ref.rs:11:11 - | -LL | fn f1(ref a @ b: U) {} - | ^^^^^ - value is moved into `b` here - | | - | value is borrowed by `a` here - -error: cannot move out of value because it is borrowed - --> $DIR/borrowck-pat-by-move-and-ref.rs:14:11 - | -LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {} - | ^^^^^ ----- - value is moved into `e` here - | | | - | | value is moved into `c` here - | value is borrowed by `a` here - -error: cannot move out of value because it is borrowed - --> $DIR/borrowck-pat-by-move-and-ref.rs:14:20 - | -LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {} - | ^^^^^ ----- value is moved into `c` here - | | - | value is borrowed by `b` here - -error: cannot move out of value because it is borrowed - --> $DIR/borrowck-pat-by-move-and-ref.rs:14:35 - | -LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {} - | ^^^^^ - value is moved into `e` here - | | - | value is borrowed by `d` here - -error: cannot move out of value because it is borrowed - --> $DIR/borrowck-pat-by-move-and-ref.rs:20:11 - | -LL | fn f3(ref mut a @ [b, mut c]: [U; 2]) {} - | ^^^^^^^^^ - ----- value is moved into `c` here - | | | - | | value is moved into `b` here - | value is mutably borrowed by `a` here - error[E0382]: borrow of partially moved value --> $DIR/borrowck-pat-by-move-and-ref.rs:30:9 | @@ -306,6 +264,14 @@ help: borrow this binding in the pattern to avoid moving the value LL | ref a @ Some((ref b @ mut c, ref d @ ref e)) => {} | +++ +error: cannot move out of value because it is borrowed + --> $DIR/borrowck-pat-by-move-and-ref.rs:11:11 + | +LL | fn f1(ref a @ b: U) {} + | ^^^^^ - value is moved into `b` here + | | + | value is borrowed by `a` here + error[E0382]: borrow of moved value --> $DIR/borrowck-pat-by-move-and-ref.rs:11:11 | @@ -315,6 +281,31 @@ LL | fn f1(ref a @ b: U) {} | value borrowed here after move | move occurs because value has type `U`, which does not implement the `Copy` trait +error: cannot move out of value because it is borrowed + --> $DIR/borrowck-pat-by-move-and-ref.rs:14:11 + | +LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {} + | ^^^^^ ----- - value is moved into `e` here + | | | + | | value is moved into `c` here + | value is borrowed by `a` here + +error: cannot move out of value because it is borrowed + --> $DIR/borrowck-pat-by-move-and-ref.rs:14:20 + | +LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {} + | ^^^^^ ----- value is moved into `c` here + | | + | value is borrowed by `b` here + +error: cannot move out of value because it is borrowed + --> $DIR/borrowck-pat-by-move-and-ref.rs:14:35 + | +LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {} + | ^^^^^ - value is moved into `e` here + | | + | value is borrowed by `d` here + error[E0382]: borrow of moved value --> $DIR/borrowck-pat-by-move-and-ref.rs:14:20 | @@ -335,6 +326,15 @@ LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {} | = note: move occurs because value has type `U`, which does not implement the `Copy` trait +error: cannot move out of value because it is borrowed + --> $DIR/borrowck-pat-by-move-and-ref.rs:20:11 + | +LL | fn f3(ref mut a @ [b, mut c]: [U; 2]) {} + | ^^^^^^^^^ - ----- value is moved into `c` here + | | | + | | value is moved into `b` here + | value is mutably borrowed by `a` here + error[E0382]: borrow of partially moved value --> $DIR/borrowck-pat-by-move-and-ref.rs:20:11 | diff --git a/tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-and-ref.stderr b/tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-and-ref.stderr index d6409d1b6..c0a6558a1 100644 --- a/tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-and-ref.stderr +++ b/tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-and-ref.stderr @@ -221,47 +221,6 @@ LL | let ref mut a @ (ref b, ref c) = (U, U); | | value is borrowed by `b` here | value is mutably borrowed by `a` here -error: cannot borrow value as mutable because it is also borrowed as immutable - --> $DIR/borrowck-pat-ref-mut-and-ref.rs:22:11 - | -LL | fn f1(ref a @ ref mut b: U) {} - | ^^^^^ --------- value is mutably borrowed by `b` here - | | - | value is borrowed by `a` here - -error: cannot borrow value as immutable because it is also borrowed as mutable - --> $DIR/borrowck-pat-ref-mut-and-ref.rs:24:11 - | -LL | fn f2(ref mut a @ ref b: U) {} - | ^^^^^^^^^ ----- value is borrowed by `b` here - | | - | value is mutably borrowed by `a` here - -error: cannot borrow value as mutable because it is also borrowed as immutable - --> $DIR/borrowck-pat-ref-mut-and-ref.rs:26:11 - | -LL | fn f3(ref a @ [ref b, ref mut mid @ .., ref c]: [U; 4]) {} - | ^^^^^ ----------- value is mutably borrowed by `mid` here - | | - | value is borrowed by `a` here - -error: cannot borrow value as mutable because it is also borrowed as immutable - --> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:22 - | -LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {} - | ^^^^^ --------- - value is moved into `c` here - | | | - | | value is mutably borrowed by `b` here - | value is borrowed by `a` here - -error: cannot move out of value because it is borrowed - --> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:30 - | -LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {} - | ^^^^^^^^^ - value is moved into `c` here - | | - | value is mutably borrowed by `b` here - error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable --> $DIR/borrowck-pat-ref-mut-and-ref.rs:8:31 | @@ -398,6 +357,47 @@ LL | LL | *b = U; | ------ mutable borrow later used here +error: cannot borrow value as mutable because it is also borrowed as immutable + --> $DIR/borrowck-pat-ref-mut-and-ref.rs:22:11 + | +LL | fn f1(ref a @ ref mut b: U) {} + | ^^^^^ --------- value is mutably borrowed by `b` here + | | + | value is borrowed by `a` here + +error: cannot borrow value as immutable because it is also borrowed as mutable + --> $DIR/borrowck-pat-ref-mut-and-ref.rs:24:11 + | +LL | fn f2(ref mut a @ ref b: U) {} + | ^^^^^^^^^ ----- value is borrowed by `b` here + | | + | value is mutably borrowed by `a` here + +error: cannot borrow value as mutable because it is also borrowed as immutable + --> $DIR/borrowck-pat-ref-mut-and-ref.rs:26:11 + | +LL | fn f3(ref a @ [ref b, ref mut mid @ .., ref c]: [U; 4]) {} + | ^^^^^ ----------- value is mutably borrowed by `mid` here + | | + | value is borrowed by `a` here + +error: cannot borrow value as mutable because it is also borrowed as immutable + --> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:22 + | +LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {} + | ^^^^^ --------- - value is moved into `c` here + | | | + | | value is mutably borrowed by `b` here + | value is borrowed by `a` here + +error: cannot move out of value because it is borrowed + --> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:30 + | +LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {} + | ^^^^^^^^^ - value is moved into `c` here + | | + | value is mutably borrowed by `b` here + error[E0382]: borrow of moved value --> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:30 | diff --git a/tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-twice.stderr b/tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-twice.stderr index 24189d061..c634ea470 100644 --- a/tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-twice.stderr +++ b/tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-twice.stderr @@ -194,50 +194,6 @@ LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | | | value is mutably borrowed by `a` here -error: cannot borrow value as mutable more than once at a time - --> $DIR/borrowck-pat-ref-mut-twice.rs:8:11 - | -LL | fn f1(ref mut a @ ref mut b: U) {} - | ^^^^^^^^^ --------- value is mutably borrowed by `b` here - | | - | value is mutably borrowed by `a` here - -error: cannot borrow value as mutable more than once at a time - --> $DIR/borrowck-pat-ref-mut-twice.rs:10:11 - | -LL | fn f2(ref mut a @ ref mut b: U) {} - | ^^^^^^^^^ --------- value is mutably borrowed by `b` here - | | - | value is mutably borrowed by `a` here - -error: cannot borrow value as mutable more than once at a time - --> $DIR/borrowck-pat-ref-mut-twice.rs:13:9 - | -LL | ref mut a @ [ - | ^^^^^^^^^ value is mutably borrowed by `a` here -LL | -LL | [ref b @ .., _], - | ----- value is borrowed by `b` here -LL | [_, ref mut mid @ ..], - | ----------- value is mutably borrowed by `mid` here - -error: cannot borrow value as mutable more than once at a time - --> $DIR/borrowck-pat-ref-mut-twice.rs:21:22 - | -LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {} - | ^^^^^^^^^ --------- - value is moved into `c` here - | | | - | | value is mutably borrowed by `b` here - | value is mutably borrowed by `a` here - -error: cannot move out of value because it is borrowed - --> $DIR/borrowck-pat-ref-mut-twice.rs:21:34 - | -LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {} - | ^^^^^^^^^ - value is moved into `c` here - | | - | value is mutably borrowed by `b` here - error[E0499]: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:29:9 | @@ -304,6 +260,50 @@ LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { LL | drop(a); | - first borrow later used here +error: cannot borrow value as mutable more than once at a time + --> $DIR/borrowck-pat-ref-mut-twice.rs:8:11 + | +LL | fn f1(ref mut a @ ref mut b: U) {} + | ^^^^^^^^^ --------- value is mutably borrowed by `b` here + | | + | value is mutably borrowed by `a` here + +error: cannot borrow value as mutable more than once at a time + --> $DIR/borrowck-pat-ref-mut-twice.rs:10:11 + | +LL | fn f2(ref mut a @ ref mut b: U) {} + | ^^^^^^^^^ --------- value is mutably borrowed by `b` here + | | + | value is mutably borrowed by `a` here + +error: cannot borrow value as mutable more than once at a time + --> $DIR/borrowck-pat-ref-mut-twice.rs:13:9 + | +LL | ref mut a @ [ + | ^^^^^^^^^ value is mutably borrowed by `a` here +LL | +LL | [ref b @ .., _], + | ----- value is borrowed by `b` here +LL | [_, ref mut mid @ ..], + | ----------- value is mutably borrowed by `mid` here + +error: cannot borrow value as mutable more than once at a time + --> $DIR/borrowck-pat-ref-mut-twice.rs:21:22 + | +LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {} + | ^^^^^^^^^ --------- - value is moved into `c` here + | | | + | | value is mutably borrowed by `b` here + | value is mutably borrowed by `a` here + +error: cannot move out of value because it is borrowed + --> $DIR/borrowck-pat-ref-mut-twice.rs:21:34 + | +LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {} + | ^^^^^^^^^ - value is moved into `c` here + | | + | value is mutably borrowed by `b` here + error[E0382]: borrow of moved value --> $DIR/borrowck-pat-ref-mut-twice.rs:21:34 | diff --git a/tests/ui/pattern/bindings-after-at/nested-type-ascription-syntactically-invalid.rs b/tests/ui/pattern/bindings-after-at/nested-type-ascription-syntactically-invalid.rs index a709e34b5..01a978d55 100644 --- a/tests/ui/pattern/bindings-after-at/nested-type-ascription-syntactically-invalid.rs +++ b/tests/ui/pattern/bindings-after-at/nested-type-ascription-syntactically-invalid.rs @@ -22,8 +22,7 @@ fn case_1() { #[cfg(FALSE)] fn case_2() { let a @ (b: u8); - //~^ ERROR expected one of `!` - //~| ERROR expected one of `)` + //~^ ERROR expected one of `)` } #[cfg(FALSE)] diff --git a/tests/ui/pattern/bindings-after-at/nested-type-ascription-syntactically-invalid.stderr b/tests/ui/pattern/bindings-after-at/nested-type-ascription-syntactically-invalid.stderr index 27660ae40..0c109ff6b 100644 --- a/tests/ui/pattern/bindings-after-at/nested-type-ascription-syntactically-invalid.stderr +++ b/tests/ui/pattern/bindings-after-at/nested-type-ascription-syntactically-invalid.stderr @@ -9,18 +9,14 @@ error: expected one of `)`, `,`, `@`, or `|`, found `:` | LL | let a @ (b: u8); | ^ expected one of `)`, `,`, `@`, or `|` - -error: expected one of `!`, `(`, `+`, `::`, `;`, `<`, or `=`, found `)` - --> $DIR/nested-type-ascription-syntactically-invalid.rs:24:19 | -LL | let a @ (b: u8); - | ^ expected one of 7 possible tokens + = note: type ascription syntax has been removed, see issue #101728 <https://github.com/rust-lang/rust/issues/101728> error: expected one of `!`, `(`, `+`, `::`, `;`, `<`, or `=`, found `@` - --> $DIR/nested-type-ascription-syntactically-invalid.rs:31:15 + --> $DIR/nested-type-ascription-syntactically-invalid.rs:30:15 | LL | let a: T1 @ Outer(b: T2); | ^ expected one of 7 possible tokens -error: aborting due to 4 previous errors +error: aborting due to 3 previous errors diff --git a/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern-pass.rs b/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern-pass.rs index 5445696fd..204cd3e66 100644 --- a/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern-pass.rs +++ b/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern-pass.rs @@ -1,5 +1,7 @@ // check-pass +#![allow(dropping_references)] + fn main() {} struct U; diff --git a/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern.stderr b/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern.stderr index c7c7c074f..a033cc065 100644 --- a/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern.stderr +++ b/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern.stderr @@ -112,7 +112,7 @@ LL | *_x0 = U; help: consider changing this to be a mutable reference | LL | let (ref mut _x0, _x1, ref _x2, ..) = tup; - | ~~~~~~~~~~~ + | +++ error[E0594]: cannot assign to `*_x2`, which is behind a `&` reference --> $DIR/borrowck-move-ref-pattern.rs:27:5 @@ -123,7 +123,7 @@ LL | *_x2 = U; help: consider changing this to be a mutable reference | LL | let (ref _x0, _x1, ref mut _x2, ..) = tup; - | ~~~~~~~~~~~ + | +++ error[E0382]: use of moved value: `tup.1` --> $DIR/borrowck-move-ref-pattern.rs:28:10 diff --git a/tests/ui/pattern/move-ref-patterns/move-ref-patterns-closure-captures-pass.rs b/tests/ui/pattern/move-ref-patterns/move-ref-patterns-closure-captures-pass.rs index 583f70f41..4de1f653d 100644 --- a/tests/ui/pattern/move-ref-patterns/move-ref-patterns-closure-captures-pass.rs +++ b/tests/ui/pattern/move-ref-patterns/move-ref-patterns-closure-captures-pass.rs @@ -1,5 +1,7 @@ // check-pass +#![allow(dropping_references)] + fn main() { struct U; fn accept_fn_once(_: impl FnOnce()) {} diff --git a/tests/ui/pattern/pattern-error-continue.stderr b/tests/ui/pattern/pattern-error-continue.stderr index e1349fb02..10fcccb03 100644 --- a/tests/ui/pattern/pattern-error-continue.stderr +++ b/tests/ui/pattern/pattern-error-continue.stderr @@ -1,9 +1,3 @@ -error[E0433]: failed to resolve: use of undeclared type `E` - --> $DIR/pattern-error-continue.rs:33:9 - | -LL | E::V => {} - | ^ use of undeclared type `E` - error[E0532]: expected tuple struct or tuple variant, found unit variant `A::D` --> $DIR/pattern-error-continue.rs:18:9 | @@ -56,6 +50,15 @@ note: function defined here LL | fn f(_c: char) {} | ^ -------- +error[E0433]: failed to resolve: use of undeclared type `E` + --> $DIR/pattern-error-continue.rs:33:9 + | +LL | E::V => {} + | ^ + | | + | use of undeclared type `E` + | help: an enum with a similar name exists: `A` + error: aborting due to 5 previous errors Some errors have detailed explanations: E0023, E0308, E0433, E0532. diff --git a/tests/ui/pattern/usefulness/consts-opaque.rs b/tests/ui/pattern/usefulness/consts-opaque.rs index ca4fcd85b..c10c6205a 100644 --- a/tests/ui/pattern/usefulness/consts-opaque.rs +++ b/tests/ui/pattern/usefulness/consts-opaque.rs @@ -20,11 +20,12 @@ const BAR: Bar = Bar; #[derive(PartialEq)] enum Baz { Baz1, - Baz2 + Baz2, } impl Eq for Baz {} const BAZ: Baz = Baz::Baz1; +#[rustfmt::skip] fn main() { match FOO { FOO => {} @@ -124,8 +125,16 @@ fn main() { match WRAPQUUX { Wrap(_) => {} - WRAPQUUX => {} // detected unreachable because we do inspect the `Wrap` layer - //~^ ERROR unreachable pattern + WRAPQUUX => {} + } + + match WRAPQUUX { + Wrap(_) => {} + } + + match WRAPQUUX { + //~^ ERROR: non-exhaustive patterns: `Wrap(_)` not covered + WRAPQUUX => {} } #[derive(PartialEq, Eq)] @@ -138,8 +147,7 @@ fn main() { match WHOKNOWSQUUX { WHOKNOWSQUUX => {} WhoKnows::Yay(_) => {} - WHOKNOWSQUUX => {} // detected unreachable because we do inspect the `WhoKnows` layer - //~^ ERROR unreachable pattern + WHOKNOWSQUUX => {} WhoKnows::Nope => {} } } diff --git a/tests/ui/pattern/usefulness/consts-opaque.stderr b/tests/ui/pattern/usefulness/consts-opaque.stderr index 3f0b4a9f2..e01b06ccc 100644 --- a/tests/ui/pattern/usefulness/consts-opaque.stderr +++ b/tests/ui/pattern/usefulness/consts-opaque.stderr @@ -1,5 +1,5 @@ error: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:30:9 + --> $DIR/consts-opaque.rs:31:9 | LL | FOO => {} | ^^^ @@ -8,7 +8,7 @@ LL | FOO => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:37:9 + --> $DIR/consts-opaque.rs:38:9 | LL | FOO_REF => {} | ^^^^^^^ @@ -17,7 +17,7 @@ LL | FOO_REF => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details warning: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:45:9 + --> $DIR/consts-opaque.rs:46:9 | LL | FOO_REF_REF => {} | ^^^^^^^^^^^ @@ -29,7 +29,7 @@ LL | FOO_REF_REF => {} = note: `#[warn(indirect_structural_match)]` on by default error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:53:9 + --> $DIR/consts-opaque.rs:54:9 | LL | BAR => {} // should not be emitting unreachable warning | ^^^ @@ -38,7 +38,7 @@ LL | BAR => {} // should not be emitting unreachable warning = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:61:9 + --> $DIR/consts-opaque.rs:62:9 | LL | BAR => {} | ^^^ @@ -47,7 +47,7 @@ LL | BAR => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:70:9 + --> $DIR/consts-opaque.rs:71:9 | LL | BAR => {} | ^^^ @@ -56,7 +56,7 @@ LL | BAR => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:72:9 + --> $DIR/consts-opaque.rs:73:9 | LL | BAR => {} // should not be emitting unreachable warning | ^^^ @@ -65,7 +65,7 @@ LL | BAR => {} // should not be emitting unreachable warning = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:80:9 + --> $DIR/consts-opaque.rs:81:9 | LL | BAZ => {} | ^^^ @@ -74,7 +74,7 @@ LL | BAZ => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:90:9 + --> $DIR/consts-opaque.rs:91:9 | LL | BAZ => {} | ^^^ @@ -83,7 +83,7 @@ LL | BAZ => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:97:9 + --> $DIR/consts-opaque.rs:98:9 | LL | BAZ => {} | ^^^ @@ -92,7 +92,7 @@ LL | BAZ => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: unreachable pattern - --> $DIR/consts-opaque.rs:32:9 + --> $DIR/consts-opaque.rs:33:9 | LL | FOO => {} | --- matches any value @@ -107,7 +107,7 @@ LL | #![deny(unreachable_patterns)] | ^^^^^^^^^^^^^^^^^^^^ error: unreachable pattern - --> $DIR/consts-opaque.rs:39:9 + --> $DIR/consts-opaque.rs:40:9 | LL | FOO_REF => {} | ------- matches any value @@ -116,7 +116,7 @@ LL | Foo(_) => {} // should not be emitting unreachable warning | ^^^^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:53:9 + --> $DIR/consts-opaque.rs:54:9 | LL | Bar => {} | --- matches any value @@ -124,7 +124,7 @@ LL | BAR => {} // should not be emitting unreachable warning | ^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:56:9 + --> $DIR/consts-opaque.rs:57:9 | LL | Bar => {} | --- matches any value @@ -133,7 +133,7 @@ LL | _ => {} | ^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:63:9 + --> $DIR/consts-opaque.rs:64:9 | LL | BAR => {} | --- matches any value @@ -142,7 +142,7 @@ LL | Bar => {} // should not be emitting unreachable warning | ^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:65:9 + --> $DIR/consts-opaque.rs:66:9 | LL | BAR => {} | --- matches any value @@ -151,7 +151,7 @@ LL | _ => {} | ^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:72:9 + --> $DIR/consts-opaque.rs:73:9 | LL | BAR => {} | --- matches any value @@ -160,7 +160,7 @@ LL | BAR => {} // should not be emitting unreachable warning | ^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:75:9 + --> $DIR/consts-opaque.rs:76:9 | LL | BAR => {} | --- matches any value @@ -169,7 +169,7 @@ LL | _ => {} // should not be emitting unreachable warning | ^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:82:9 + --> $DIR/consts-opaque.rs:83:9 | LL | BAZ => {} | --- matches any value @@ -178,7 +178,7 @@ LL | Baz::Baz1 => {} // should not be emitting unreachable warning | ^^^^^^^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:84:9 + --> $DIR/consts-opaque.rs:85:9 | LL | BAZ => {} | --- matches any value @@ -187,7 +187,7 @@ LL | _ => {} | ^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:92:9 + --> $DIR/consts-opaque.rs:93:9 | LL | BAZ => {} | --- matches any value @@ -196,7 +196,7 @@ LL | _ => {} | ^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:99:9 + --> $DIR/consts-opaque.rs:100:9 | LL | BAZ => {} | --- matches any value @@ -205,7 +205,7 @@ LL | Baz::Baz2 => {} // should not be emitting unreachable warning | ^^^^^^^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:101:9 + --> $DIR/consts-opaque.rs:102:9 | LL | BAZ => {} | --- matches any value @@ -213,19 +213,24 @@ LL | BAZ => {} LL | _ => {} // should not be emitting unreachable warning | ^ unreachable pattern -error: unreachable pattern - --> $DIR/consts-opaque.rs:127:9 +error[E0004]: non-exhaustive patterns: `Wrap(_)` not covered + --> $DIR/consts-opaque.rs:135:11 | -LL | Wrap(_) => {} - | ------- matches any value -LL | WRAPQUUX => {} // detected unreachable because we do inspect the `Wrap` layer - | ^^^^^^^^ unreachable pattern - -error: unreachable pattern - --> $DIR/consts-opaque.rs:141:9 +LL | match WRAPQUUX { + | ^^^^^^^^ pattern `Wrap(_)` not covered + | +note: `Wrap<fn(usize, usize) -> usize>` defined here + --> $DIR/consts-opaque.rs:117:12 + | +LL | struct Wrap<T>(T); + | ^^^^ + = note: the matched value is of type `Wrap<fn(usize, usize) -> usize>` +help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown + | +LL ~ WRAPQUUX => {}, +LL + Wrap(_) => todo!() | -LL | WHOKNOWSQUUX => {} // detected unreachable because we do inspect the `WhoKnows` layer - | ^^^^^^^^^^^^ -error: aborting due to 24 previous errors; 1 warning emitted +error: aborting due to 23 previous errors; 1 warning emitted +For more information about this error, try `rustc --explain E0004`. diff --git a/tests/ui/pattern/usefulness/empty-match.exhaustive_patterns.stderr b/tests/ui/pattern/usefulness/empty-match.exhaustive_patterns.stderr index 5a145efce..49b6dfca6 100644 --- a/tests/ui/pattern/usefulness/empty-match.exhaustive_patterns.stderr +++ b/tests/ui/pattern/usefulness/empty-match.exhaustive_patterns.stderr @@ -1,5 +1,5 @@ error: unreachable pattern - --> $DIR/empty-match.rs:37:9 + --> $DIR/empty-match.rs:58:9 | LL | _ => {}, | ^ @@ -11,37 +11,52 @@ LL | #![deny(unreachable_patterns)] | ^^^^^^^^^^^^^^^^^^^^ error: unreachable pattern - --> $DIR/empty-match.rs:40:9 + --> $DIR/empty-match.rs:61:9 | LL | _ if false => {}, | ^ error: unreachable pattern - --> $DIR/empty-match.rs:47:9 + --> $DIR/empty-match.rs:68:9 | LL | _ => {}, | ^ error: unreachable pattern - --> $DIR/empty-match.rs:50:9 + --> $DIR/empty-match.rs:71:9 | LL | _ if false => {}, | ^ +error[E0005]: refutable pattern in local binding + --> $DIR/empty-match.rs:76:9 + | +LL | let None = x; + | ^^^^ pattern `Some(_)` not covered + | + = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant + = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html + = note: pattern `Some(_)` is currently uninhabited, but this variant contains private fields which may become inhabited in the future + = note: the matched value is of type `Option<SecretlyUninhabitedForeignStruct>` +help: you might want to use `if let` to ignore the variant that isn't matched + | +LL | if let None = x { todo!() }; + | ++ +++++++++++ + error: unreachable pattern - --> $DIR/empty-match.rs:57:9 + --> $DIR/empty-match.rs:88:9 | LL | _ => {}, | ^ error: unreachable pattern - --> $DIR/empty-match.rs:60:9 + --> $DIR/empty-match.rs:91:9 | LL | _ if false => {}, | ^ error[E0004]: non-exhaustive patterns: type `u8` is non-empty - --> $DIR/empty-match.rs:78:20 + --> $DIR/empty-match.rs:109:20 | LL | match_no_arms!(0u8); | ^^^ @@ -50,13 +65,13 @@ LL | match_no_arms!(0u8); = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern error[E0004]: non-exhaustive patterns: type `NonEmptyStruct1` is non-empty - --> $DIR/empty-match.rs:79:20 + --> $DIR/empty-match.rs:111:20 | LL | match_no_arms!(NonEmptyStruct1); | ^^^^^^^^^^^^^^^ | note: `NonEmptyStruct1` defined here - --> $DIR/empty-match.rs:14:8 + --> $DIR/empty-match.rs:15:8 | LL | struct NonEmptyStruct1; | ^^^^^^^^^^^^^^^ @@ -64,13 +79,13 @@ LL | struct NonEmptyStruct1; = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern error[E0004]: non-exhaustive patterns: type `NonEmptyStruct2` is non-empty - --> $DIR/empty-match.rs:80:20 + --> $DIR/empty-match.rs:113:20 | LL | match_no_arms!(NonEmptyStruct2(true)); | ^^^^^^^^^^^^^^^^^^^^^ | note: `NonEmptyStruct2` defined here - --> $DIR/empty-match.rs:15:8 + --> $DIR/empty-match.rs:18:8 | LL | struct NonEmptyStruct2(bool); | ^^^^^^^^^^^^^^^ @@ -78,13 +93,13 @@ LL | struct NonEmptyStruct2(bool); = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern error[E0004]: non-exhaustive patterns: type `NonEmptyUnion1` is non-empty - --> $DIR/empty-match.rs:81:20 + --> $DIR/empty-match.rs:115:20 | LL | match_no_arms!((NonEmptyUnion1 { foo: () })); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: `NonEmptyUnion1` defined here - --> $DIR/empty-match.rs:16:7 + --> $DIR/empty-match.rs:21:7 | LL | union NonEmptyUnion1 { | ^^^^^^^^^^^^^^ @@ -92,13 +107,13 @@ LL | union NonEmptyUnion1 { = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern error[E0004]: non-exhaustive patterns: type `NonEmptyUnion2` is non-empty - --> $DIR/empty-match.rs:82:20 + --> $DIR/empty-match.rs:117:20 | LL | match_no_arms!((NonEmptyUnion2 { foo: () })); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: `NonEmptyUnion2` defined here - --> $DIR/empty-match.rs:19:7 + --> $DIR/empty-match.rs:26:7 | LL | union NonEmptyUnion2 { | ^^^^^^^^^^^^^^ @@ -106,13 +121,13 @@ LL | union NonEmptyUnion2 { = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern error[E0004]: non-exhaustive patterns: `NonEmptyEnum1::Foo(_)` not covered - --> $DIR/empty-match.rs:83:20 + --> $DIR/empty-match.rs:119:20 | LL | match_no_arms!(NonEmptyEnum1::Foo(true)); | ^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyEnum1::Foo(_)` not covered | note: `NonEmptyEnum1` defined here - --> $DIR/empty-match.rs:24:5 + --> $DIR/empty-match.rs:33:5 | LL | enum NonEmptyEnum1 { | ------------- @@ -122,31 +137,32 @@ LL | Foo(bool), = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern error[E0004]: non-exhaustive patterns: `NonEmptyEnum2::Foo(_)` and `NonEmptyEnum2::Bar` not covered - --> $DIR/empty-match.rs:84:20 + --> $DIR/empty-match.rs:122:20 | LL | match_no_arms!(NonEmptyEnum2::Foo(true)); | ^^^^^^^^^^^^^^^^^^^^^^^^ patterns `NonEmptyEnum2::Foo(_)` and `NonEmptyEnum2::Bar` not covered | note: `NonEmptyEnum2` defined here - --> $DIR/empty-match.rs:27:5 + --> $DIR/empty-match.rs:40:5 | LL | enum NonEmptyEnum2 { | ------------- LL | Foo(bool), | ^^^ not covered +... LL | Bar, | ^^^ not covered = note: the matched value is of type `NonEmptyEnum2` = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or multiple match arms error[E0004]: non-exhaustive patterns: `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2`, `NonEmptyEnum5::V3` and 2 more not covered - --> $DIR/empty-match.rs:85:20 + --> $DIR/empty-match.rs:125:20 | LL | match_no_arms!(NonEmptyEnum5::V1); | ^^^^^^^^^^^^^^^^^ patterns `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2`, `NonEmptyEnum5::V3` and 2 more not covered | note: `NonEmptyEnum5` defined here - --> $DIR/empty-match.rs:30:6 + --> $DIR/empty-match.rs:49:6 | LL | enum NonEmptyEnum5 { | ^^^^^^^^^^^^^ @@ -154,7 +170,7 @@ LL | enum NonEmptyEnum5 { = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or multiple match arms error[E0004]: non-exhaustive patterns: `_` not covered - --> $DIR/empty-match.rs:87:24 + --> $DIR/empty-match.rs:129:24 | LL | match_guarded_arm!(0u8); | ^^^ pattern `_` not covered @@ -167,13 +183,13 @@ LL + _ => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyStruct1` not covered - --> $DIR/empty-match.rs:88:24 + --> $DIR/empty-match.rs:133:24 | LL | match_guarded_arm!(NonEmptyStruct1); | ^^^^^^^^^^^^^^^ pattern `NonEmptyStruct1` not covered | note: `NonEmptyStruct1` defined here - --> $DIR/empty-match.rs:14:8 + --> $DIR/empty-match.rs:15:8 | LL | struct NonEmptyStruct1; | ^^^^^^^^^^^^^^^ @@ -185,13 +201,13 @@ LL + NonEmptyStruct1 => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyStruct2(_)` not covered - --> $DIR/empty-match.rs:89:24 + --> $DIR/empty-match.rs:137:24 | LL | match_guarded_arm!(NonEmptyStruct2(true)); | ^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyStruct2(_)` not covered | note: `NonEmptyStruct2` defined here - --> $DIR/empty-match.rs:15:8 + --> $DIR/empty-match.rs:18:8 | LL | struct NonEmptyStruct2(bool); | ^^^^^^^^^^^^^^^ @@ -203,13 +219,13 @@ LL + NonEmptyStruct2(_) => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyUnion1 { .. }` not covered - --> $DIR/empty-match.rs:90:24 + --> $DIR/empty-match.rs:141:24 | LL | match_guarded_arm!((NonEmptyUnion1 { foo: () })); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyUnion1 { .. }` not covered | note: `NonEmptyUnion1` defined here - --> $DIR/empty-match.rs:16:7 + --> $DIR/empty-match.rs:21:7 | LL | union NonEmptyUnion1 { | ^^^^^^^^^^^^^^ @@ -221,13 +237,13 @@ LL + NonEmptyUnion1 { .. } => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyUnion2 { .. }` not covered - --> $DIR/empty-match.rs:91:24 + --> $DIR/empty-match.rs:145:24 | LL | match_guarded_arm!((NonEmptyUnion2 { foo: () })); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyUnion2 { .. }` not covered | note: `NonEmptyUnion2` defined here - --> $DIR/empty-match.rs:19:7 + --> $DIR/empty-match.rs:26:7 | LL | union NonEmptyUnion2 { | ^^^^^^^^^^^^^^ @@ -239,13 +255,13 @@ LL + NonEmptyUnion2 { .. } => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyEnum1::Foo(_)` not covered - --> $DIR/empty-match.rs:92:24 + --> $DIR/empty-match.rs:149:24 | LL | match_guarded_arm!(NonEmptyEnum1::Foo(true)); | ^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyEnum1::Foo(_)` not covered | note: `NonEmptyEnum1` defined here - --> $DIR/empty-match.rs:24:5 + --> $DIR/empty-match.rs:33:5 | LL | enum NonEmptyEnum1 { | ------------- @@ -259,18 +275,19 @@ LL + NonEmptyEnum1::Foo(_) => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyEnum2::Foo(_)` and `NonEmptyEnum2::Bar` not covered - --> $DIR/empty-match.rs:93:24 + --> $DIR/empty-match.rs:153:24 | LL | match_guarded_arm!(NonEmptyEnum2::Foo(true)); | ^^^^^^^^^^^^^^^^^^^^^^^^ patterns `NonEmptyEnum2::Foo(_)` and `NonEmptyEnum2::Bar` not covered | note: `NonEmptyEnum2` defined here - --> $DIR/empty-match.rs:27:5 + --> $DIR/empty-match.rs:40:5 | LL | enum NonEmptyEnum2 { | ------------- LL | Foo(bool), | ^^^ not covered +... LL | Bar, | ^^^ not covered = note: the matched value is of type `NonEmptyEnum2` @@ -281,13 +298,13 @@ LL + NonEmptyEnum2::Foo(_) | NonEmptyEnum2::Bar => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2`, `NonEmptyEnum5::V3` and 2 more not covered - --> $DIR/empty-match.rs:94:24 + --> $DIR/empty-match.rs:157:24 | LL | match_guarded_arm!(NonEmptyEnum5::V1); | ^^^^^^^^^^^^^^^^^ patterns `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2`, `NonEmptyEnum5::V3` and 2 more not covered | note: `NonEmptyEnum5` defined here - --> $DIR/empty-match.rs:30:6 + --> $DIR/empty-match.rs:49:6 | LL | enum NonEmptyEnum5 { | ^^^^^^^^^^^^^ @@ -298,6 +315,7 @@ LL ~ _ if false => {}, LL + _ => todo!() | -error: aborting due to 22 previous errors +error: aborting due to 23 previous errors -For more information about this error, try `rustc --explain E0004`. +Some errors have detailed explanations: E0004, E0005. +For more information about an error, try `rustc --explain E0004`. diff --git a/tests/ui/pattern/usefulness/empty-match.normal.stderr b/tests/ui/pattern/usefulness/empty-match.normal.stderr index 5a145efce..f54a3f336 100644 --- a/tests/ui/pattern/usefulness/empty-match.normal.stderr +++ b/tests/ui/pattern/usefulness/empty-match.normal.stderr @@ -1,5 +1,5 @@ error: unreachable pattern - --> $DIR/empty-match.rs:37:9 + --> $DIR/empty-match.rs:58:9 | LL | _ => {}, | ^ @@ -11,37 +11,51 @@ LL | #![deny(unreachable_patterns)] | ^^^^^^^^^^^^^^^^^^^^ error: unreachable pattern - --> $DIR/empty-match.rs:40:9 + --> $DIR/empty-match.rs:61:9 | LL | _ if false => {}, | ^ error: unreachable pattern - --> $DIR/empty-match.rs:47:9 + --> $DIR/empty-match.rs:68:9 | LL | _ => {}, | ^ error: unreachable pattern - --> $DIR/empty-match.rs:50:9 + --> $DIR/empty-match.rs:71:9 | LL | _ if false => {}, | ^ +error[E0005]: refutable pattern in local binding + --> $DIR/empty-match.rs:76:9 + | +LL | let None = x; + | ^^^^ pattern `Some(_)` not covered + | + = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant + = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html + = note: the matched value is of type `Option<SecretlyUninhabitedForeignStruct>` +help: you might want to use `if let` to ignore the variant that isn't matched + | +LL | if let None = x { todo!() }; + | ++ +++++++++++ + error: unreachable pattern - --> $DIR/empty-match.rs:57:9 + --> $DIR/empty-match.rs:88:9 | LL | _ => {}, | ^ error: unreachable pattern - --> $DIR/empty-match.rs:60:9 + --> $DIR/empty-match.rs:91:9 | LL | _ if false => {}, | ^ error[E0004]: non-exhaustive patterns: type `u8` is non-empty - --> $DIR/empty-match.rs:78:20 + --> $DIR/empty-match.rs:109:20 | LL | match_no_arms!(0u8); | ^^^ @@ -50,13 +64,13 @@ LL | match_no_arms!(0u8); = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern error[E0004]: non-exhaustive patterns: type `NonEmptyStruct1` is non-empty - --> $DIR/empty-match.rs:79:20 + --> $DIR/empty-match.rs:111:20 | LL | match_no_arms!(NonEmptyStruct1); | ^^^^^^^^^^^^^^^ | note: `NonEmptyStruct1` defined here - --> $DIR/empty-match.rs:14:8 + --> $DIR/empty-match.rs:15:8 | LL | struct NonEmptyStruct1; | ^^^^^^^^^^^^^^^ @@ -64,13 +78,13 @@ LL | struct NonEmptyStruct1; = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern error[E0004]: non-exhaustive patterns: type `NonEmptyStruct2` is non-empty - --> $DIR/empty-match.rs:80:20 + --> $DIR/empty-match.rs:113:20 | LL | match_no_arms!(NonEmptyStruct2(true)); | ^^^^^^^^^^^^^^^^^^^^^ | note: `NonEmptyStruct2` defined here - --> $DIR/empty-match.rs:15:8 + --> $DIR/empty-match.rs:18:8 | LL | struct NonEmptyStruct2(bool); | ^^^^^^^^^^^^^^^ @@ -78,13 +92,13 @@ LL | struct NonEmptyStruct2(bool); = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern error[E0004]: non-exhaustive patterns: type `NonEmptyUnion1` is non-empty - --> $DIR/empty-match.rs:81:20 + --> $DIR/empty-match.rs:115:20 | LL | match_no_arms!((NonEmptyUnion1 { foo: () })); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: `NonEmptyUnion1` defined here - --> $DIR/empty-match.rs:16:7 + --> $DIR/empty-match.rs:21:7 | LL | union NonEmptyUnion1 { | ^^^^^^^^^^^^^^ @@ -92,13 +106,13 @@ LL | union NonEmptyUnion1 { = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern error[E0004]: non-exhaustive patterns: type `NonEmptyUnion2` is non-empty - --> $DIR/empty-match.rs:82:20 + --> $DIR/empty-match.rs:117:20 | LL | match_no_arms!((NonEmptyUnion2 { foo: () })); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: `NonEmptyUnion2` defined here - --> $DIR/empty-match.rs:19:7 + --> $DIR/empty-match.rs:26:7 | LL | union NonEmptyUnion2 { | ^^^^^^^^^^^^^^ @@ -106,13 +120,13 @@ LL | union NonEmptyUnion2 { = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern error[E0004]: non-exhaustive patterns: `NonEmptyEnum1::Foo(_)` not covered - --> $DIR/empty-match.rs:83:20 + --> $DIR/empty-match.rs:119:20 | LL | match_no_arms!(NonEmptyEnum1::Foo(true)); | ^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyEnum1::Foo(_)` not covered | note: `NonEmptyEnum1` defined here - --> $DIR/empty-match.rs:24:5 + --> $DIR/empty-match.rs:33:5 | LL | enum NonEmptyEnum1 { | ------------- @@ -122,31 +136,32 @@ LL | Foo(bool), = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern error[E0004]: non-exhaustive patterns: `NonEmptyEnum2::Foo(_)` and `NonEmptyEnum2::Bar` not covered - --> $DIR/empty-match.rs:84:20 + --> $DIR/empty-match.rs:122:20 | LL | match_no_arms!(NonEmptyEnum2::Foo(true)); | ^^^^^^^^^^^^^^^^^^^^^^^^ patterns `NonEmptyEnum2::Foo(_)` and `NonEmptyEnum2::Bar` not covered | note: `NonEmptyEnum2` defined here - --> $DIR/empty-match.rs:27:5 + --> $DIR/empty-match.rs:40:5 | LL | enum NonEmptyEnum2 { | ------------- LL | Foo(bool), | ^^^ not covered +... LL | Bar, | ^^^ not covered = note: the matched value is of type `NonEmptyEnum2` = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or multiple match arms error[E0004]: non-exhaustive patterns: `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2`, `NonEmptyEnum5::V3` and 2 more not covered - --> $DIR/empty-match.rs:85:20 + --> $DIR/empty-match.rs:125:20 | LL | match_no_arms!(NonEmptyEnum5::V1); | ^^^^^^^^^^^^^^^^^ patterns `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2`, `NonEmptyEnum5::V3` and 2 more not covered | note: `NonEmptyEnum5` defined here - --> $DIR/empty-match.rs:30:6 + --> $DIR/empty-match.rs:49:6 | LL | enum NonEmptyEnum5 { | ^^^^^^^^^^^^^ @@ -154,7 +169,7 @@ LL | enum NonEmptyEnum5 { = help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or multiple match arms error[E0004]: non-exhaustive patterns: `_` not covered - --> $DIR/empty-match.rs:87:24 + --> $DIR/empty-match.rs:129:24 | LL | match_guarded_arm!(0u8); | ^^^ pattern `_` not covered @@ -167,13 +182,13 @@ LL + _ => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyStruct1` not covered - --> $DIR/empty-match.rs:88:24 + --> $DIR/empty-match.rs:133:24 | LL | match_guarded_arm!(NonEmptyStruct1); | ^^^^^^^^^^^^^^^ pattern `NonEmptyStruct1` not covered | note: `NonEmptyStruct1` defined here - --> $DIR/empty-match.rs:14:8 + --> $DIR/empty-match.rs:15:8 | LL | struct NonEmptyStruct1; | ^^^^^^^^^^^^^^^ @@ -185,13 +200,13 @@ LL + NonEmptyStruct1 => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyStruct2(_)` not covered - --> $DIR/empty-match.rs:89:24 + --> $DIR/empty-match.rs:137:24 | LL | match_guarded_arm!(NonEmptyStruct2(true)); | ^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyStruct2(_)` not covered | note: `NonEmptyStruct2` defined here - --> $DIR/empty-match.rs:15:8 + --> $DIR/empty-match.rs:18:8 | LL | struct NonEmptyStruct2(bool); | ^^^^^^^^^^^^^^^ @@ -203,13 +218,13 @@ LL + NonEmptyStruct2(_) => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyUnion1 { .. }` not covered - --> $DIR/empty-match.rs:90:24 + --> $DIR/empty-match.rs:141:24 | LL | match_guarded_arm!((NonEmptyUnion1 { foo: () })); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyUnion1 { .. }` not covered | note: `NonEmptyUnion1` defined here - --> $DIR/empty-match.rs:16:7 + --> $DIR/empty-match.rs:21:7 | LL | union NonEmptyUnion1 { | ^^^^^^^^^^^^^^ @@ -221,13 +236,13 @@ LL + NonEmptyUnion1 { .. } => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyUnion2 { .. }` not covered - --> $DIR/empty-match.rs:91:24 + --> $DIR/empty-match.rs:145:24 | LL | match_guarded_arm!((NonEmptyUnion2 { foo: () })); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyUnion2 { .. }` not covered | note: `NonEmptyUnion2` defined here - --> $DIR/empty-match.rs:19:7 + --> $DIR/empty-match.rs:26:7 | LL | union NonEmptyUnion2 { | ^^^^^^^^^^^^^^ @@ -239,13 +254,13 @@ LL + NonEmptyUnion2 { .. } => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyEnum1::Foo(_)` not covered - --> $DIR/empty-match.rs:92:24 + --> $DIR/empty-match.rs:149:24 | LL | match_guarded_arm!(NonEmptyEnum1::Foo(true)); | ^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyEnum1::Foo(_)` not covered | note: `NonEmptyEnum1` defined here - --> $DIR/empty-match.rs:24:5 + --> $DIR/empty-match.rs:33:5 | LL | enum NonEmptyEnum1 { | ------------- @@ -259,18 +274,19 @@ LL + NonEmptyEnum1::Foo(_) => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyEnum2::Foo(_)` and `NonEmptyEnum2::Bar` not covered - --> $DIR/empty-match.rs:93:24 + --> $DIR/empty-match.rs:153:24 | LL | match_guarded_arm!(NonEmptyEnum2::Foo(true)); | ^^^^^^^^^^^^^^^^^^^^^^^^ patterns `NonEmptyEnum2::Foo(_)` and `NonEmptyEnum2::Bar` not covered | note: `NonEmptyEnum2` defined here - --> $DIR/empty-match.rs:27:5 + --> $DIR/empty-match.rs:40:5 | LL | enum NonEmptyEnum2 { | ------------- LL | Foo(bool), | ^^^ not covered +... LL | Bar, | ^^^ not covered = note: the matched value is of type `NonEmptyEnum2` @@ -281,13 +297,13 @@ LL + NonEmptyEnum2::Foo(_) | NonEmptyEnum2::Bar => todo!() | error[E0004]: non-exhaustive patterns: `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2`, `NonEmptyEnum5::V3` and 2 more not covered - --> $DIR/empty-match.rs:94:24 + --> $DIR/empty-match.rs:157:24 | LL | match_guarded_arm!(NonEmptyEnum5::V1); | ^^^^^^^^^^^^^^^^^ patterns `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2`, `NonEmptyEnum5::V3` and 2 more not covered | note: `NonEmptyEnum5` defined here - --> $DIR/empty-match.rs:30:6 + --> $DIR/empty-match.rs:49:6 | LL | enum NonEmptyEnum5 { | ^^^^^^^^^^^^^ @@ -298,6 +314,7 @@ LL ~ _ if false => {}, LL + _ => todo!() | -error: aborting due to 22 previous errors +error: aborting due to 23 previous errors -For more information about this error, try `rustc --explain E0004`. +Some errors have detailed explanations: E0004, E0005. +For more information about an error, try `rustc --explain E0004`. diff --git a/tests/ui/pattern/usefulness/empty-match.rs b/tests/ui/pattern/usefulness/empty-match.rs index 9cdc0413b..062241faa 100644 --- a/tests/ui/pattern/usefulness/empty-match.rs +++ b/tests/ui/pattern/usefulness/empty-match.rs @@ -6,28 +6,49 @@ #![feature(never_type_fallback)] #![cfg_attr(exhaustive_patterns, feature(exhaustive_patterns))] #![deny(unreachable_patterns)] +//~^ NOTE the lint level is defined here extern crate empty; enum EmptyEnum {} struct NonEmptyStruct1; +//~^ NOTE `NonEmptyStruct1` defined here +//~| NOTE `NonEmptyStruct1` defined here struct NonEmptyStruct2(bool); +//~^ NOTE `NonEmptyStruct2` defined here +//~| NOTE `NonEmptyStruct2` defined here union NonEmptyUnion1 { + //~^ NOTE `NonEmptyUnion1` defined here + //~| NOTE `NonEmptyUnion1` defined here foo: (), } union NonEmptyUnion2 { + //~^ NOTE `NonEmptyUnion2` defined here + //~| NOTE `NonEmptyUnion2` defined here foo: (), bar: (), } enum NonEmptyEnum1 { Foo(bool), + //~^ NOTE `NonEmptyEnum1` defined here + //~| NOTE `NonEmptyEnum1` defined here + //~| NOTE not covered + //~| NOTE not covered } enum NonEmptyEnum2 { Foo(bool), + //~^ NOTE `NonEmptyEnum2` defined here + //~| NOTE `NonEmptyEnum2` defined here + //~| NOTE not covered + //~| NOTE not covered Bar, + //~^ NOTE not covered + //~| NOTE not covered } enum NonEmptyEnum5 { + //~^ NOTE `NonEmptyEnum5` defined here + //~| NOTE `NonEmptyEnum5` defined here V1, V2, V3, V4, V5, } @@ -51,6 +72,16 @@ fn empty_foreign_enum(x: empty::EmptyForeignEnum) { } } +fn empty_foreign_enum_private(x: Option<empty::SecretlyUninhabitedForeignStruct>) { + let None = x; + //~^ ERROR refutable pattern in local binding + //~| NOTE `let` bindings require an "irrefutable pattern" + //~| NOTE for more information, visit + //~| NOTE the matched value is of type + //~| NOTE pattern `Some(_)` not covered + //[exhaustive_patterns]~| NOTE currently uninhabited, but this variant contains private fields +} + fn never(x: !) { match x {} // ok match x { @@ -76,20 +107,55 @@ macro_rules! match_guarded_arm { fn main() { match_no_arms!(0u8); //~ ERROR type `u8` is non-empty + //~| NOTE the matched value is of type match_no_arms!(NonEmptyStruct1); //~ ERROR type `NonEmptyStruct1` is non-empty + //~| NOTE the matched value is of type match_no_arms!(NonEmptyStruct2(true)); //~ ERROR type `NonEmptyStruct2` is non-empty + //~| NOTE the matched value is of type match_no_arms!((NonEmptyUnion1 { foo: () })); //~ ERROR type `NonEmptyUnion1` is non-empty + //~| NOTE the matched value is of type match_no_arms!((NonEmptyUnion2 { foo: () })); //~ ERROR type `NonEmptyUnion2` is non-empty + //~| NOTE the matched value is of type match_no_arms!(NonEmptyEnum1::Foo(true)); //~ ERROR `NonEmptyEnum1::Foo(_)` not covered + //~| NOTE pattern `NonEmptyEnum1::Foo(_)` not covered + //~| NOTE the matched value is of type match_no_arms!(NonEmptyEnum2::Foo(true)); //~ ERROR `NonEmptyEnum2::Foo(_)` and `NonEmptyEnum2::Bar` not covered + //~| NOTE patterns `NonEmptyEnum2::Foo(_)` and + //~| NOTE the matched value is of type match_no_arms!(NonEmptyEnum5::V1); //~ ERROR `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2`, `NonEmptyEnum5::V3` and 2 more not covered + //~| NOTE patterns `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2` + //~| NOTE the matched value is of type match_guarded_arm!(0u8); //~ ERROR `_` not covered + //~| NOTE the matched value is of type + //~| NOTE pattern `_` not covered + //~| NOTE in this expansion of match_guarded_arm! match_guarded_arm!(NonEmptyStruct1); //~ ERROR `NonEmptyStruct1` not covered + //~| NOTE pattern `NonEmptyStruct1` not covered + //~| NOTE the matched value is of type + //~| NOTE in this expansion of match_guarded_arm! match_guarded_arm!(NonEmptyStruct2(true)); //~ ERROR `NonEmptyStruct2(_)` not covered + //~| NOTE the matched value is of type + //~| NOTE pattern `NonEmptyStruct2(_)` not covered + //~| NOTE in this expansion of match_guarded_arm! match_guarded_arm!((NonEmptyUnion1 { foo: () })); //~ ERROR `NonEmptyUnion1 { .. }` not covered + //~| NOTE the matched value is of type + //~| NOTE pattern `NonEmptyUnion1 { .. }` not covered + //~| NOTE in this expansion of match_guarded_arm! match_guarded_arm!((NonEmptyUnion2 { foo: () })); //~ ERROR `NonEmptyUnion2 { .. }` not covered + //~| NOTE the matched value is of type + //~| NOTE pattern `NonEmptyUnion2 { .. }` not covered + //~| NOTE in this expansion of match_guarded_arm! match_guarded_arm!(NonEmptyEnum1::Foo(true)); //~ ERROR `NonEmptyEnum1::Foo(_)` not covered + //~| NOTE the matched value is of type + //~| NOTE pattern `NonEmptyEnum1::Foo(_)` not covered + //~| NOTE in this expansion of match_guarded_arm! match_guarded_arm!(NonEmptyEnum2::Foo(true)); //~ ERROR `NonEmptyEnum2::Foo(_)` and `NonEmptyEnum2::Bar` not covered + //~| NOTE the matched value is of type + //~| NOTE patterns `NonEmptyEnum2::Foo(_)` and + //~| NOTE in this expansion of match_guarded_arm! match_guarded_arm!(NonEmptyEnum5::V1); //~ ERROR `NonEmptyEnum5::V1`, `NonEmptyEnum5::V2`, `NonEmptyEnum5::V3` and 2 more not covered + //~| NOTE the matched value is of type + //~| NOTE patterns `NonEmptyEnum5::V1`, + //~| NOTE in this expansion of match_guarded_arm! } |