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rust/tests/ui/coercion/coerce-loop-issue-122561.stderr

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Remove note about iteration count in coerce and replace it with a simple note suggesting returning a value. The type mismatch error was never due to how many times the loop iterates. It is more because of the peculiar structure of what the for loop desugars to. So the note talking about iteration count didn't make sense
2024-04-19 08:00:28 -05:00
warning: denote infinite loops with `loop { ... }`
--> $DIR/coerce-loop-issue-122561.rs:48:5
|
LL | while true {
| ^^^^^^^^^^ help: use `loop`
|
= note: `#[warn(while_true)]` on by default
warning: denote infinite loops with `loop { ... }`
--> $DIR/coerce-loop-issue-122561.rs:72:5
|
LL | while true {
| ^^^^^^^^^^ help: use `loop`
error[E0658]: `for` is not allowed in a `const`
--> $DIR/coerce-loop-issue-122561.rs:41:24
|
LL | fn for_in_arg(a: &[(); for x in 0..2 {}]) -> bool {
| ^^^^^^^^^^^^^^^^
|
= note: see issue #87575 <https://github.com/rust-lang/rust/issues/87575> for more information
= help: add `#![feature(const_for)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error[E0658]: `for` is not allowed in a `const`
--> $DIR/coerce-loop-issue-122561.rs:86:5
|
LL | / for i in 0.. {
LL | |
LL | |
LL | | }
| |_____^
|
= note: see issue #87575 <https://github.com/rust-lang/rust/issues/87575> for more information
= help: add `#![feature(const_for)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error[E0658]: `for` is not allowed in a `const`
--> $DIR/coerce-loop-issue-122561.rs:94:9
|
LL | / for i in 0..5 {
LL | |
LL | |
LL | | }
| |_________^
|
= note: see issue #87575 <https://github.com/rust-lang/rust/issues/87575> for more information
= help: add `#![feature(const_for)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error[E0658]: `for` is not allowed in a `const`
--> $DIR/coerce-loop-issue-122561.rs:107:23
|
LL | let _ = |a: &[(); for x in 0..2 {}]| {};
| ^^^^^^^^^^^^^^^^
|
= note: see issue #87575 <https://github.com/rust-lang/rust/issues/87575> for more information
= help: add `#![feature(const_for)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:41:24
|
LL | fn for_in_arg(a: &[(); for x in 0..2 {}]) -> bool {
| ^^^^^^^^^^^^^^^^ expected `usize`, found `()`
|
= note: `for` loops evaluate to unit type `()`
help: consider returning a value here
|
LL | fn for_in_arg(a: &[(); for x in 0..2 {} /* `usize` value */]) -> bool {
| +++++++++++++++++++
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:86:5
|
LL | / for i in 0.. {
LL | |
LL | |
LL | | }
| |_____^ expected `i32`, found `()`
|
= note: `for` loops evaluate to unit type `()`
help: consider returning a value here
|
LL ~ }
LL + /* `i32` value */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:4:5
|
LL | fn for_infinite() -> bool {
| ---- expected `bool` because of return type
LL | / for i in 0.. {
LL | |
LL | | return false;
LL | | }
| |_____^ expected `bool`, found `()`
|
= note: `for` loops evaluate to unit type `()`
help: consider returning a value here
|
LL ~ }
LL + /* `bool` value */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:11:5
|
LL | fn for_finite() -> String {
| ------ expected `String` because of return type
LL | / for i in 0..5 {
LL | |
LL | | return String::from("test");
LL | | }
| |_____^ expected `String`, found `()`
|
= note: `for` loops evaluate to unit type `()`
help: consider returning a value here
|
LL ~ }
LL + /* `String` value */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:18:5
|
LL | fn for_zero_times() -> bool {
| ---- expected `bool` because of return type
LL | / for i in 0..0 {
LL | |
LL | | return true;
LL | | }
| |_____^ expected `bool`, found `()`
|
= note: `for` loops evaluate to unit type `()`
help: consider returning a value here
|
LL ~ }
LL + /* `bool` value */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:25:5
|
LL | fn for_never_type() -> ! {
| - expected `!` because of return type
LL | / for i in 0..5 {
LL | |
LL | | }
| |_____^ expected `!`, found `()`
|
= note: expected type `!`
found unit type `()`
= note: `for` loops evaluate to unit type `()`
help: consider adding a diverging expression here
|
LL ~ }
LL + /* `loop {}` or `panic!("...")` */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:33:32
|
LL | fn for_single_line() -> bool { for i in 0.. { return false; } }
| ---- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `()`
| |
| expected `bool` because of return type
|
= note: `for` loops evaluate to unit type `()`
help: consider returning a value here
|
LL | fn for_single_line() -> bool { for i in 0.. { return false; } /* `bool` value */ }
| ++++++++++++++++++
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:48:5
|
LL | fn while_inifinite() -> bool {
| ---- expected `bool` because of return type
LL | / while true {
LL | |
LL | |
LL | | return true;
LL | | }
| |_____^ expected `bool`, found `()`
|
= note: `while` loops evaluate to unit type `()`
help: consider returning a value here
|
LL ~ }
LL + /* `bool` value */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:57:5
|
LL | fn while_finite() -> bool {
| ---- expected `bool` because of return type
LL | let mut i = 0;
LL | / while i < 3 {
LL | |
LL | | i += 1;
LL | | return true;
LL | | }
| |_____^ expected `bool`, found `()`
|
= note: `while` loops evaluate to unit type `()`
help: consider returning a value here
|
LL ~ }
LL + /* `bool` value */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:65:5
|
LL | fn while_zero_times() -> bool {
| ---- expected `bool` because of return type
LL | / while false {
LL | |
LL | | return true;
LL | | }
| |_____^ expected `bool`, found `()`
|
= note: `while` loops evaluate to unit type `()`
help: consider returning a value here
|
LL ~ }
LL + /* `bool` value */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:72:5
|
LL | fn while_never_type() -> ! {
| - expected `!` because of return type
LL | / while true {
LL | |
LL | |
LL | | }
| |_____^ expected `!`, found `()`
|
= note: expected type `!`
found unit type `()`
= note: `while` loops evaluate to unit type `()`
help: consider adding a diverging expression here
|
LL ~ }
LL + /* `loop {}` or `panic!("...")` */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:94:9
|
LL | / for i in 0..5 {
LL | |
LL | |
LL | | }
| |_________^ expected `usize`, found `()`
|
= note: `for` loops evaluate to unit type `()`
help: consider returning a value here
|
LL ~ }
LL + /* `usize` value */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:101:9
|
LL | / while false {
LL | |
LL | | }
| |_________^ expected `usize`, found `()`
|
= note: `while` loops evaluate to unit type `()`
help: consider returning a value here
|
LL ~ }
LL + /* `usize` value */
|
error[E0308]: mismatched types
--> $DIR/coerce-loop-issue-122561.rs:107:23
|
LL | let _ = |a: &[(); for x in 0..2 {}]| {};
| ^^^^^^^^^^^^^^^^ expected `usize`, found `()`
|
= note: `for` loops evaluate to unit type `()`
help: consider returning a value here
|
LL | let _ = |a: &[(); for x in 0..2 {} /* `usize` value */]| {};
| +++++++++++++++++++
error: aborting due to 18 previous errors; 2 warnings emitted
Some errors have detailed explanations: E0308, E0658.
For more information about an error, try `rustc --explain E0308`.
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