mirror of https://github.com/rust-lang/rust
350 lines
11 KiB
Plaintext
350 lines
11 KiB
Plaintext
warning: label name `'a` shadows a label name that is already in scope
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--> $DIR/loop-break-value.rs:140:17
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LL | 'a: loop {
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| -- first declared here
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LL | break;
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LL | let _ = 'a: loop {
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| ^^ label `'a` already in scope
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warning: label name `'a` shadows a label name that is already in scope
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--> $DIR/loop-break-value.rs:152:17
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LL | 'a: loop {
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| -- first declared here
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LL | break;
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LL | let _ = 'a: loop {
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| ^^ label `'a` already in scope
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error[E0425]: cannot find value `LOOP` in this scope
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--> $DIR/loop-break-value.rs:99:15
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LL | 'LOOP: for _ in 0 .. 9 {
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| ----- a label with a similar name exists
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LL | break LOOP;
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| ^^^^
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| |
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| not found in this scope
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| help: use the similarly named label: `'LOOP`
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warning: denote infinite loops with `loop { ... }`
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--> $DIR/loop-break-value.rs:30:5
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LL | 'while_loop: while true {
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| ^^^^^^^^^^^^^^^^^^^^^^^ help: use `loop`
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= note: `#[warn(while_true)]` on by default
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error[E0571]: `break` with value from a `while` loop
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--> $DIR/loop-break-value.rs:32:9
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LL | 'while_loop: while true {
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| ----------------------- you can't `break` with a value in a `while` loop
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LL | break;
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LL | break ();
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| ^^^^^^^^ can only break with a value inside `loop` or breakable block
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help: use `break` on its own without a value inside this `while` loop
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LL | break;
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| ~~~~~
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help: alternatively, you might have meant to use the available loop label
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LL | break 'while_loop;
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| ~~~~~~~~~~~
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error[E0571]: `break` with value from a `while` loop
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--> $DIR/loop-break-value.rs:34:13
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LL | 'while_loop: while true {
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| ----------------------- you can't `break` with a value in a `while` loop
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...
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LL | break 'while_loop 123;
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| ^^^^^^^^^^^^^^^^^^^^^ can only break with a value inside `loop` or breakable block
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help: use `break` on its own without a value inside this `while` loop
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LL | break 'while_loop;
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| ~~~~~~~~~~~~~~~~~
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error[E0571]: `break` with value from a `while` loop
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--> $DIR/loop-break-value.rs:42:12
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LL | while let Some(_) = Some(()) {
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| ---------------------------- you can't `break` with a value in a `while` loop
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LL | if break () {
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| ^^^^^^^^ can only break with a value inside `loop` or breakable block
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help: use `break` on its own without a value inside this `while` loop
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LL | if break {
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| ~~~~~
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error[E0571]: `break` with value from a `while` loop
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--> $DIR/loop-break-value.rs:47:9
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LL | while let Some(_) = Some(()) {
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| ---------------------------- you can't `break` with a value in a `while` loop
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LL | break None;
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| ^^^^^^^^^^ can only break with a value inside `loop` or breakable block
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help: use `break` on its own without a value inside this `while` loop
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LL | break;
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| ~~~~~
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error[E0571]: `break` with value from a `while` loop
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--> $DIR/loop-break-value.rs:53:13
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LL | 'while_let_loop: while let Some(_) = Some(()) {
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| --------------------------------------------- you can't `break` with a value in a `while` loop
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LL | loop {
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LL | break 'while_let_loop "nope";
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can only break with a value inside `loop` or breakable block
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help: use `break` on its own without a value inside this `while` loop
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LL | break 'while_let_loop;
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| ~~~~~~~~~~~~~~~~~~~~~
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error[E0571]: `break` with value from a `for` loop
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--> $DIR/loop-break-value.rs:60:9
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LL | for _ in &[1,2,3] {
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| ----------------- you can't `break` with a value in a `for` loop
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LL | break ();
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| ^^^^^^^^ can only break with a value inside `loop` or breakable block
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help: use `break` on its own without a value inside this `for` loop
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LL | break;
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| ~~~~~
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error[E0571]: `break` with value from a `for` loop
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--> $DIR/loop-break-value.rs:61:9
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LL | for _ in &[1,2,3] {
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| ----------------- you can't `break` with a value in a `for` loop
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LL | break ();
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LL | break [()];
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| ^^^^^^^^^^ can only break with a value inside `loop` or breakable block
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help: use `break` on its own without a value inside this `for` loop
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LL | break;
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| ~~~~~
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error[E0571]: `break` with value from a `for` loop
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--> $DIR/loop-break-value.rs:68:13
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LL | 'for_loop: for _ in &[1,2,3] {
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| ---------------------------- you can't `break` with a value in a `for` loop
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...
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LL | break 'for_loop Some(17);
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| ^^^^^^^^^^^^^^^^^^^^^^^^ can only break with a value inside `loop` or breakable block
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help: use `break` on its own without a value inside this `for` loop
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LL | break 'for_loop;
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| ~~~~~~~~~~~~~~~
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:4:31
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LL | let val: ! = loop { break break; };
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| --- ---- ^^^^^ expected `!`, found `()`
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| | |
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| | this loop is expected to be of type `!`
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| expected because of this assignment
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= note: expected type `!`
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found unit type `()`
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:11:19
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LL | break "asdf";
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| ------------ expected because of this `break`
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LL | } else {
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LL | break 123;
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| ^^^ expected `&str`, found integer
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:16:15
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LL | let _: i32 = loop {
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| - ---- this loop is expected to be of type `i32`
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| |
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| expected because of this assignment
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LL | break "asdf";
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| ^^^^^^ expected `i32`, found `&str`
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:21:31
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LL | let _: i32 = 'outer_loop: loop {
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| - ---- this loop is expected to be of type `i32`
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| |
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| expected because of this assignment
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LL | loop {
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LL | break 'outer_loop "nope";
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| ^^^^^^ expected `i32`, found `&str`
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:27:9
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LL | let _: Option<String> = loop {
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| - ---- this loop is expected to be of type `Option<String>`
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| |
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| expected because of this assignment
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LL | break;
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| ^^^^^ expected `Option<String>`, found `()`
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= note: expected enum `Option<String>`
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found unit type `()`
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help: give the `break` a value of the expected type
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LL | break None;
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| ++++
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:77:26
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LL | break;
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| ----- expected because of this `break`
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LL | break 'c 123;
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| ^^^ expected `()`, found integer
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:84:15
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LL | break (break, break);
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| ^-----^^-----^
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| || |
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| || expected because of this `break`
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| |expected because of this `break`
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| expected `()`, found `(!, !)`
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= note: expected unit type `()`
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found tuple `(!, !)`
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:89:15
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LL | break;
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| ----- expected because of this `break`
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LL | break 2;
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| ^ expected `()`, found integer
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:94:9
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LL | break 2;
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| ------- expected because of this `break`
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LL | break;
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| ^^^^^ expected integer, found `()`
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help: give the `break` a value of the expected type
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LL | break /* value */;
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| +++++++++++
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:112:9
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LL | break 'a 1;
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| ---------- expected because of this `break`
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...
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LL | break;
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| ^^^^^ expected integer, found `()`
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help: give the `break` a value of the expected type
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LL | break /* value */;
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| +++++++++++
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:124:9
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LL | break 'a 1;
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| ---------- expected because of this `break`
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...
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LL | break 'a;
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| ^^^^^^^^ expected integer, found `()`
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help: give the `break` a value of the expected type
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LL | break 'a /* value */;
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| +++++++++++
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:135:15
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LL | break;
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| ----- expected because of this `break`
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...
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LL | break 2;
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| ^ expected `()`, found integer
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:144:17
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LL | break 2;
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| ------- expected because of this `break`
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LL | loop {
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LL | break 'a;
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| ^^^^^^^^ expected integer, found `()`
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help: give the `break` a value of the expected type
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LL | break 'a /* value */;
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| +++++++++++
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:147:15
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LL | break;
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| ----- expected because of this `break`
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...
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LL | break 2;
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| ^ expected `()`, found integer
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:156:17
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LL | break 'a 2;
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| ---------- expected because of this `break`
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LL | loop {
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LL | break 'a;
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| ^^^^^^^^ expected integer, found `()`
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help: give the `break` a value of the expected type
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LL | break 'a /* value */;
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| +++++++++++
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:159:15
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LL | break;
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| ----- expected because of this `break`
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...
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LL | break 2;
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| ^ expected `()`, found integer
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error[E0308]: mismatched types
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--> $DIR/loop-break-value.rs:163:15
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LL | fn main() {
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| - expected `()` because of this return type
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...
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LL | loop { // point at the return type
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| ---- this loop is expected to be of type `()`
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LL | break 2;
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| ^ expected `()`, found integer
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error: aborting due to 26 previous errors; 3 warnings emitted
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Some errors have detailed explanations: E0308, E0425, E0571.
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For more information about an error, try `rustc --explain E0308`.
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