rust/tests/ui/binop/issue-3820.stderr

error[E0369]: cannot multiply `Thing` by `{integer}`
  --> $DIR/issue-3820.rs:14:15
   |
LL |     let w = u * 3;
   |             - ^ - {integer}
   |             |
   |             Thing
   |
note: an implementation of `Mul<{integer}>` might be missing for `Thing`
  --> $DIR/issue-3820.rs:1:1
   |
LL | struct Thing {
   | ^^^^^^^^^^^^ must implement `Mul<{integer}>`
note: the trait `Mul` must be implemented
  --> $SRC_DIR/core/src/ops/arith.rs:LL:COL

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0369`.
Improve wording of "cannot multiply" type error For example, if you had this code: fn foo(x: i32, y: f32) -> f32 { x * y } You would get this error: error[E0277]: cannot multiply `f32` to `i32` --> src/lib.rs:2:7 \| 2 \| x * y \| ^ no implementation for `i32 * f32` \| = help: the trait `Mul<f32>` is not implemented for `i32` However, that's not usually how people describe multiplication. People usually describe multiplication like how the division error words it: error[E0277]: cannot divide `i32` by `f32` --> src/lib.rs:2:7 \| 2 \| x / y \| ^ no implementation for `i32 / f32` \| = help: the trait `Div<f32>` is not implemented for `i32` So that's what this change does. It changes this: error[E0277]: cannot multiply `f32` to `i32` --> src/lib.rs:2:7 \| 2 \| x * y \| ^ no implementation for `i32 * f32` \| = help: the trait `Mul<f32>` is not implemented for `i32` To this: error[E0277]: cannot multiply `i32` by `f32` --> src/lib.rs:2:7 \| 2 \| x * y \| ^ no implementation for `i32 * f32` \| = help: the trait `Mul<f32>` is not implemented for `i32` 2020-10-18 02:59:51 +00:00			error[E0369]: cannot multiply `Thing` by `{integer}`
Better diagnostic for binary operation on BoxedValues 2019-03-27 17:13:09 +00:00			`--> $DIR/issue-3820.rs:14:15`
Move some `compile-fail` tests to `ui` 2018-07-15 21:11:54 +00:00			`\|`
Update tests 2019-03-09 12:03:44 +00:00			`LL \| let w = u * 3;`
Better diagnostic for binary operation on BoxedValues 2019-03-27 17:13:09 +00:00			`\| - ^ - {integer}`
			`\| \|`
			`\| Thing`
Move some `compile-fail` tests to `ui` 2018-07-15 21:11:54 +00:00			`\|`
Provide RHS type hint when reporting operator error 2023-04-27 00:57:13 +00:00			note: an implementation of `Mul<{integer}>` might be missing for `Thing`
Consider unfulfilled obligations in binop errors When encountering a binop where the types would have been accepted, if all the predicates had been fulfilled, include information about the predicates and suggest appropriate `#[derive]`s if possible. Point at trait(s) that needs to be `impl`emented. 2021-09-28 14:48:54 +00:00			`--> $DIR/issue-3820.rs:1:1`
			`\|`
			`LL \| struct Thing {`
Provide RHS type hint when reporting operator error 2023-04-27 00:57:13 +00:00			\| ^^^^^^^^^^^^ must implement `Mul<{integer}>`
Inform the user which trait is meant in the diagnostic itself instead of relying on the span making it obvious 2022-12-12 11:55:46 +00:00			note: the trait `Mul` must be implemented
Consider unfulfilled obligations in binop errors When encountering a binop where the types would have been accepted, if all the predicates had been fulfilled, include information about the predicates and suggest appropriate `#[derive]`s if possible. Point at trait(s) that needs to be `impl`emented. 2021-09-28 14:48:54 +00:00			`--> $SRC_DIR/core/src/ops/arith.rs:LL:COL`
Move some `compile-fail` tests to `ui` 2018-07-15 21:11:54 +00:00
Show number in error message even for one error Co-authored-by: Adrian <adrian.iosdev@gmail.com> 2023-11-21 15:44:16 +00:00			`error: aborting due to 1 previous error`
Move some `compile-fail` tests to `ui` 2018-07-15 21:11:54 +00:00
			For more information about this error, try `rustc --explain E0369`.