mirror of https://github.com/rust-lang/rust
645 lines
20 KiB
Plaintext
645 lines
20 KiB
Plaintext
warning: the feature `never_patterns` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/empty-types.rs:14:33
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LL | #![cfg_attr(never_pats, feature(never_patterns))]
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| ^^^^^^^^^^^^^^
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= note: see issue #118155 <https://github.com/rust-lang/rust/issues/118155> for more information
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= note: `#[warn(incomplete_features)]` on by default
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error: unreachable pattern
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--> $DIR/empty-types.rs:51:9
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LL | _ => {}
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| ^
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note: the lint level is defined here
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--> $DIR/empty-types.rs:17:9
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LL | #![deny(unreachable_patterns)]
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| ^^^^^^^^^^^^^^^^^^^^
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error: unreachable pattern
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--> $DIR/empty-types.rs:54:9
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LL | _x => {}
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| ^^
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error[E0004]: non-exhaustive patterns: type `&!` is non-empty
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--> $DIR/empty-types.rs:58:11
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LL | match ref_never {}
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| ^^^^^^^^^
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= note: the matched value is of type `&!`
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= note: references are always considered inhabited
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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LL ~ match ref_never {
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LL + _ => todo!(),
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LL + }
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error[E0004]: non-exhaustive patterns: type `(u32, !)` is non-empty
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--> $DIR/empty-types.rs:70:11
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LL | match tuple_half_never {}
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| ^^^^^^^^^^^^^^^^
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= note: the matched value is of type `(u32, !)`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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LL ~ match tuple_half_never {
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LL + _ => todo!(),
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LL + }
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error[E0004]: non-exhaustive patterns: type `(!, !)` is non-empty
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--> $DIR/empty-types.rs:77:11
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LL | match tuple_never {}
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| ^^^^^^^^^^^
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= note: the matched value is of type `(!, !)`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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LL ~ match tuple_never {
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LL + _ => todo!(),
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LL + }
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error: unreachable pattern
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--> $DIR/empty-types.rs:87:9
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LL | _ => {}
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| ^
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error[E0004]: non-exhaustive patterns: `Ok(_)` and `Err(!)` not covered
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--> $DIR/empty-types.rs:91:11
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LL | match res_u32_never {}
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| ^^^^^^^^^^^^^ patterns `Ok(_)` and `Err(!)` not covered
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note: `Result<u32, !>` defined here
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--> $SRC_DIR/core/src/result.rs:LL:COL
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::: $SRC_DIR/core/src/result.rs:LL:COL
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= note: not covered
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::: $SRC_DIR/core/src/result.rs:LL:COL
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= note: not covered
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= note: the matched value is of type `Result<u32, !>`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
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LL ~ match res_u32_never {
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LL + Ok(_) | Err(!) => todo!(),
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LL + }
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error[E0004]: non-exhaustive patterns: `Err(!)` not covered
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--> $DIR/empty-types.rs:93:11
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LL | match res_u32_never {
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| ^^^^^^^^^^^^^ pattern `Err(!)` not covered
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note: `Result<u32, !>` defined here
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--> $SRC_DIR/core/src/result.rs:LL:COL
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::: $SRC_DIR/core/src/result.rs:LL:COL
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= note: not covered
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= note: the matched value is of type `Result<u32, !>`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
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LL ~ Ok(_) => {},
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LL + Err(!)
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error[E0004]: non-exhaustive patterns: `Ok(1_u32..=u32::MAX)` not covered
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--> $DIR/empty-types.rs:101:11
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LL | match res_u32_never {
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| ^^^^^^^^^^^^^ pattern `Ok(1_u32..=u32::MAX)` not covered
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note: `Result<u32, !>` defined here
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--> $SRC_DIR/core/src/result.rs:LL:COL
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::: $SRC_DIR/core/src/result.rs:LL:COL
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= note: not covered
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= note: the matched value is of type `Result<u32, !>`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
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LL ~ Err(_) => {},
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LL ~ Ok(1_u32..=u32::MAX) => todo!()
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error[E0005]: refutable pattern in local binding
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--> $DIR/empty-types.rs:106:9
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LL | let Ok(_x) = res_u32_never;
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| ^^^^^^ pattern `Err(!)` not covered
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= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
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= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
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= note: the matched value is of type `Result<u32, !>`
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help: you might want to use `let else` to handle the variant that isn't matched
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LL | let Ok(_x) = res_u32_never else { todo!() };
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| ++++++++++++++++
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error[E0005]: refutable pattern in local binding
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--> $DIR/empty-types.rs:108:9
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LL | let Ok(_x) = res_u32_never.as_ref();
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| ^^^^^^ pattern `Err(_)` not covered
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= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
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= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
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= note: the matched value is of type `Result<&u32, &!>`
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help: you might want to use `let else` to handle the variant that isn't matched
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LL | let Ok(_x) = res_u32_never.as_ref() else { todo!() };
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| ++++++++++++++++
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error[E0005]: refutable pattern in local binding
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--> $DIR/empty-types.rs:112:9
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LL | let Ok(_x) = &res_u32_never;
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| ^^^^^^ pattern `&Err(!)` not covered
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= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
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= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
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= note: the matched value is of type `&Result<u32, !>`
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help: you might want to use `let else` to handle the variant that isn't matched
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LL | let Ok(_x) = &res_u32_never else { todo!() };
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| ++++++++++++++++
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error[E0004]: non-exhaustive patterns: `Ok(!)` and `Err(!)` not covered
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--> $DIR/empty-types.rs:116:11
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LL | match result_never {}
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| ^^^^^^^^^^^^ patterns `Ok(!)` and `Err(!)` not covered
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note: `Result<!, !>` defined here
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--> $SRC_DIR/core/src/result.rs:LL:COL
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::: $SRC_DIR/core/src/result.rs:LL:COL
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= note: not covered
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::: $SRC_DIR/core/src/result.rs:LL:COL
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= note: not covered
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= note: the matched value is of type `Result<!, !>`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
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LL ~ match result_never {
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LL + Ok(!) | Err(!),
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LL + }
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error[E0004]: non-exhaustive patterns: `Err(!)` not covered
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--> $DIR/empty-types.rs:121:11
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LL | match result_never {
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| ^^^^^^^^^^^^ pattern `Err(!)` not covered
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note: `Result<!, !>` defined here
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--> $SRC_DIR/core/src/result.rs:LL:COL
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::: $SRC_DIR/core/src/result.rs:LL:COL
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= note: not covered
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= note: the matched value is of type `Result<!, !>`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
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LL | Ok(_) => {}, Err(!)
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| ++++++++
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error: unreachable pattern
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--> $DIR/empty-types.rs:140:13
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LL | _ => {}
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| ^
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error: unreachable pattern
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--> $DIR/empty-types.rs:143:13
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LL | _ if false => {}
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| ^
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error[E0004]: non-exhaustive patterns: `Some(!)` not covered
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--> $DIR/empty-types.rs:146:15
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LL | match opt_void {
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| ^^^^^^^^ pattern `Some(!)` not covered
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note: `Option<Void>` defined here
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--> $SRC_DIR/core/src/option.rs:LL:COL
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::: $SRC_DIR/core/src/option.rs:LL:COL
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= note: not covered
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= note: the matched value is of type `Option<Void>`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
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LL ~ None => {},
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LL + Some(!)
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error[E0004]: non-exhaustive patterns: `Some(!)` not covered
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--> $DIR/empty-types.rs:165:15
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LL | match *ref_opt_void {
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| ^^^^^^^^^^^^^ pattern `Some(!)` not covered
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note: `Option<Void>` defined here
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--> $SRC_DIR/core/src/option.rs:LL:COL
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::: $SRC_DIR/core/src/option.rs:LL:COL
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= note: not covered
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= note: the matched value is of type `Option<Void>`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
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LL ~ None => {},
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LL + Some(!)
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error: unreachable pattern
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--> $DIR/empty-types.rs:208:13
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LL | _ => {}
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| ^
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error: unreachable pattern
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--> $DIR/empty-types.rs:213:13
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LL | _ => {}
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| ^
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error: unreachable pattern
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--> $DIR/empty-types.rs:218:13
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LL | _ => {}
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| ^
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error: unreachable pattern
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--> $DIR/empty-types.rs:223:13
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LL | _ => {}
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| ^
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error: unreachable pattern
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--> $DIR/empty-types.rs:229:13
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LL | _ => {}
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| ^
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error: unreachable pattern
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--> $DIR/empty-types.rs:288:9
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LL | _ => {}
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| ^
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error[E0004]: non-exhaustive patterns: type `(u32, !)` is non-empty
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--> $DIR/empty-types.rs:316:11
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LL | match *x {}
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| ^^
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= note: the matched value is of type `(u32, !)`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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LL ~ match *x {
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LL + _ => todo!(),
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LL ~ }
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error[E0004]: non-exhaustive patterns: type `(!, !)` is non-empty
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--> $DIR/empty-types.rs:318:11
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LL | match *x {}
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| ^^
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= note: the matched value is of type `(!, !)`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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LL ~ match *x {
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LL + _ => todo!(),
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LL ~ }
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error[E0004]: non-exhaustive patterns: `Ok(!)` and `Err(!)` not covered
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--> $DIR/empty-types.rs:320:11
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LL | match *x {}
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| ^^ patterns `Ok(!)` and `Err(!)` not covered
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note: `Result<!, !>` defined here
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--> $SRC_DIR/core/src/result.rs:LL:COL
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::: $SRC_DIR/core/src/result.rs:LL:COL
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= note: not covered
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::: $SRC_DIR/core/src/result.rs:LL:COL
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= note: not covered
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= note: the matched value is of type `Result<!, !>`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
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LL ~ match *x {
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LL + Ok(!) | Err(!),
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LL ~ }
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error[E0004]: non-exhaustive patterns: type `[!; 3]` is non-empty
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--> $DIR/empty-types.rs:322:11
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LL | match *x {}
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| ^^
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= note: the matched value is of type `[!; 3]`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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LL ~ match *x {
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LL + _ => todo!(),
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LL ~ }
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error[E0004]: non-exhaustive patterns: type `&[!]` is non-empty
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--> $DIR/empty-types.rs:327:11
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LL | match slice_never {}
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| ^^^^^^^^^^^
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= note: the matched value is of type `&[!]`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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LL ~ match slice_never {
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LL + _ => todo!(),
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LL + }
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error[E0004]: non-exhaustive patterns: `&[!, ..]` not covered
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--> $DIR/empty-types.rs:329:11
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LL | match slice_never {
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| ^^^^^^^^^^^ pattern `&[!, ..]` not covered
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= note: the matched value is of type `&[!]`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
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LL ~ [] => {},
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LL + &[!, ..]
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error[E0004]: non-exhaustive patterns: `&[]`, `&[!]` and `&[!, !]` not covered
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--> $DIR/empty-types.rs:338:11
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LL | match slice_never {
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| ^^^^^^^^^^^ patterns `&[]`, `&[!]` and `&[!, !]` not covered
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= note: the matched value is of type `&[!]`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
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LL ~ [_, _, _, ..] => {},
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LL + &[] | &[!] | &[!, !] => todo!()
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error[E0004]: non-exhaustive patterns: `&[]` and `&[!, ..]` not covered
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--> $DIR/empty-types.rs:352:11
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LL | match slice_never {
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| ^^^^^^^^^^^ patterns `&[]` and `&[!, ..]` not covered
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= note: the matched value is of type `&[!]`
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= note: match arms with guards don't count towards exhaustivity
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
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LL ~ &[..] if false => {},
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LL + &[] | &[!, ..] => todo!()
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error[E0004]: non-exhaustive patterns: type `[!]` is non-empty
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--> $DIR/empty-types.rs:359:11
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LL | match *slice_never {}
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| ^^^^^^^^^^^^
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= note: the matched value is of type `[!]`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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LL ~ match *slice_never {
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LL + _ => todo!(),
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LL + }
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error[E0004]: non-exhaustive patterns: type `[!; 3]` is non-empty
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--> $DIR/empty-types.rs:366:11
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LL | match array_3_never {}
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| ^^^^^^^^^^^^^
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= note: the matched value is of type `[!; 3]`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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LL ~ match array_3_never {
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LL + _ => todo!(),
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LL + }
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error[E0004]: non-exhaustive patterns: type `[!; 0]` is non-empty
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--> $DIR/empty-types.rs:389:11
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LL | match array_0_never {}
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| ^^^^^^^^^^^^^
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= note: the matched value is of type `[!; 0]`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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LL ~ match array_0_never {
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LL + _ => todo!(),
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LL + }
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error: unreachable pattern
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--> $DIR/empty-types.rs:396:9
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LL | _ => {}
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| ^
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error[E0004]: non-exhaustive patterns: `[]` not covered
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--> $DIR/empty-types.rs:398:11
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LL | match array_0_never {
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| ^^^^^^^^^^^^^ pattern `[]` not covered
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= note: the matched value is of type `[!; 0]`
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= note: match arms with guards don't count towards exhaustivity
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
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LL ~ [..] if false => {},
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LL + [] => todo!()
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error[E0004]: non-exhaustive patterns: `&Some(!)` not covered
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--> $DIR/empty-types.rs:452:11
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LL | match ref_opt_never {
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| ^^^^^^^^^^^^^ pattern `&Some(!)` not covered
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note: `Option<!>` defined here
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--> $SRC_DIR/core/src/option.rs:LL:COL
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::: $SRC_DIR/core/src/option.rs:LL:COL
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= note: not covered
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= note: the matched value is of type `&Option<!>`
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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 ~ &None => {},
|
|
LL + &Some(!)
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|
|
|
|
|
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error[E0004]: non-exhaustive patterns: `Some(!)` not covered
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--> $DIR/empty-types.rs:493:11
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|
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|
LL | match *ref_opt_never {
|
|
| ^^^^^^^^^^^^^^ pattern `Some(!)` not covered
|
|
|
|
|
note: `Option<!>` defined here
|
|
--> $SRC_DIR/core/src/option.rs:LL:COL
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::: $SRC_DIR/core/src/option.rs:LL:COL
|
|
|
|
|
= note: not covered
|
|
= note: the matched value is of type `Option<!>`
|
|
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 ~ None => {},
|
|
LL + Some(!)
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|
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|
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|
error[E0004]: non-exhaustive patterns: `Err(!)` not covered
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--> $DIR/empty-types.rs:541:11
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|
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LL | match *ref_res_never {
|
|
| ^^^^^^^^^^^^^^ pattern `Err(!)` not covered
|
|
|
|
|
note: `Result<!, !>` defined here
|
|
--> $SRC_DIR/core/src/result.rs:LL:COL
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|
::: $SRC_DIR/core/src/result.rs:LL:COL
|
|
|
|
|
= note: not covered
|
|
= note: the matched value is of type `Result<!, !>`
|
|
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 ~ Ok(_) => {},
|
|
LL + Err(!)
|
|
|
|
|
|
|
error[E0004]: non-exhaustive patterns: `Err(!)` not covered
|
|
--> $DIR/empty-types.rs:552:11
|
|
|
|
|
LL | match *ref_res_never {
|
|
| ^^^^^^^^^^^^^^ pattern `Err(!)` not covered
|
|
|
|
|
note: `Result<!, !>` defined here
|
|
--> $SRC_DIR/core/src/result.rs:LL:COL
|
|
::: $SRC_DIR/core/src/result.rs:LL:COL
|
|
|
|
|
= note: not covered
|
|
= note: the matched value is of type `Result<!, !>`
|
|
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 ~ Ok(_a) => {},
|
|
LL + Err(!)
|
|
|
|
|
|
|
error[E0004]: non-exhaustive patterns: type `(u32, !)` is non-empty
|
|
--> $DIR/empty-types.rs:571:11
|
|
|
|
|
LL | match *ref_tuple_half_never {}
|
|
| ^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
|
= note: the matched value is of type `(u32, !)`
|
|
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
|
|
|
|
|
LL ~ match *ref_tuple_half_never {
|
|
LL + _ => todo!(),
|
|
LL + }
|
|
|
|
|
|
|
error: unreachable pattern
|
|
--> $DIR/empty-types.rs:604:9
|
|
|
|
|
LL | _ => {}
|
|
| ^
|
|
|
|
error: unreachable pattern
|
|
--> $DIR/empty-types.rs:607:9
|
|
|
|
|
LL | _x => {}
|
|
| ^^
|
|
|
|
error: unreachable pattern
|
|
--> $DIR/empty-types.rs:610:9
|
|
|
|
|
LL | _ if false => {}
|
|
| ^
|
|
|
|
error: unreachable pattern
|
|
--> $DIR/empty-types.rs:613:9
|
|
|
|
|
LL | _x if false => {}
|
|
| ^^
|
|
|
|
error[E0004]: non-exhaustive patterns: `&!` not covered
|
|
--> $DIR/empty-types.rs:638:11
|
|
|
|
|
LL | match ref_never {
|
|
| ^^^^^^^^^ pattern `&!` not covered
|
|
|
|
|
= note: the matched value is of type `&!`
|
|
= note: references are always considered inhabited
|
|
= note: match arms with guards don't count towards exhaustivity
|
|
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 ~ &_a if false => {},
|
|
LL + &!
|
|
|
|
|
|
|
error[E0004]: non-exhaustive patterns: `Ok(!)` not covered
|
|
--> $DIR/empty-types.rs:654:11
|
|
|
|
|
LL | match *ref_result_never {
|
|
| ^^^^^^^^^^^^^^^^^ pattern `Ok(!)` not covered
|
|
|
|
|
note: `Result<!, !>` defined here
|
|
--> $SRC_DIR/core/src/result.rs:LL:COL
|
|
::: $SRC_DIR/core/src/result.rs:LL:COL
|
|
|
|
|
= note: not covered
|
|
= note: the matched value is of type `Result<!, !>`
|
|
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 ~ Err(_) => {},
|
|
LL + Ok(!)
|
|
|
|
|
|
|
error[E0004]: non-exhaustive patterns: `Some(!)` not covered
|
|
--> $DIR/empty-types.rs:674:11
|
|
|
|
|
LL | match *x {
|
|
| ^^ pattern `Some(!)` not covered
|
|
|
|
|
note: `Option<Result<!, !>>` defined here
|
|
--> $SRC_DIR/core/src/option.rs:LL:COL
|
|
::: $SRC_DIR/core/src/option.rs:LL:COL
|
|
|
|
|
= note: not covered
|
|
= note: the matched value is of type `Option<Result<!, !>>`
|
|
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 ~ None => {},
|
|
LL + Some(!)
|
|
|
|
|
|
|
error: aborting due to 49 previous errors; 1 warning emitted
|
|
|
|
Some errors have detailed explanations: E0004, E0005.
|
|
For more information about an error, try `rustc --explain E0004`.
|