rust/tests/ui/generator/yield-in-initializer.stderr

warning: unused generator that must be used
  --> $DIR/yield-in-initializer.rs:6:5
   |
LL | /     static || {
LL | |         loop {
LL | |             // Test that `opt` is not live across the yield, even when borrowed in a loop
LL | |             // See https://github.com/rust-lang/rust/issues/52792
...  |
LL | |         }
LL | |     };
   | |_____^
   |
   = note: generators are lazy and do nothing unless resumed
   = note: `#[warn(unused_must_use)]` on by default

warning: 1 warning emitted
Make closures and generators a must use types Warn about unused expressions with closure or generator type. This follows existing precedence of must use annotations present on `FnOnce`, `FnMut`, `Fn` traits, which already indirectly apply to closures in some cases, e.g.,: ```rust fn f() -> impl FnOnce() { \|\| {} } fn main() { // an existing warning: unused implementer of `std::ops::FnOnce` that must be used: f(); // a new warning: unused closure that must be used: \|\| {}; } ``` 2020-07-27 19:00:00 -05:00			`warning: unused generator that must be used`
			`--> $DIR/yield-in-initializer.rs:6:5`
			`\|`
			`LL \| / static \|\| {`
			`LL \| \| loop {`
			LL \| \| // Test that `opt` is not live across the yield, even when borrowed in a loop
			`LL \| \| // See https://github.com/rust-lang/rust/issues/52792`
			`... \|`
			`LL \| \| }`
			`LL \| \| };`
Tweak span for `#[must_use]` Do not point at whole statement, only at the expression (skip pointing at `;`) 2022-08-16 09:46:33 -05:00			`\| \|_____^`
Make closures and generators a must use types Warn about unused expressions with closure or generator type. This follows existing precedence of must use annotations present on `FnOnce`, `FnMut`, `Fn` traits, which already indirectly apply to closures in some cases, e.g.,: ```rust fn f() -> impl FnOnce() { \|\| {} } fn main() { // an existing warning: unused implementer of `std::ops::FnOnce` that must be used: f(); // a new warning: unused closure that must be used: \|\| {}; } ``` 2020-07-27 19:00:00 -05:00			`\|`
			`= note: generators are lazy and do nothing unless resumed`
bless ui tests 2022-09-18 10:55:36 -05:00			= note: `#[warn(unused_must_use)]` on by default
Make closures and generators a must use types Warn about unused expressions with closure or generator type. This follows existing precedence of must use annotations present on `FnOnce`, `FnMut`, `Fn` traits, which already indirectly apply to closures in some cases, e.g.,: ```rust fn f() -> impl FnOnce() { \|\| {} } fn main() { // an existing warning: unused implementer of `std::ops::FnOnce` that must be used: f(); // a new warning: unused closure that must be used: \|\| {}; } ``` 2020-07-27 19:00:00 -05:00
			`warning: 1 warning emitted`