rust/tests/ui/binop/binary-op-not-allowed-issue-125631.stderr
surechen 2a6a42329f Change E0369 diagnostic give note information for foreign items.
Make it easy for developers to understand why the binop cannot be applied.

fixes #125631
2024-06-25 10:00:30 +08:00

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error[E0369]: binary operation `==` cannot be applied to type `(std::io::Error, T1, {integer})`
--> $DIR/binary-op-not-allowed-issue-125631.rs:8:48
|
LL | (Error::new(ErrorKind::Other, "1"), T1, 1) == (Error::new(ErrorKind::Other, "1"), T1, 2);
| ------------------------------------------ ^^ ------------------------------------------ (std::io::Error, T1, {integer})
| |
| (std::io::Error, T1, {integer})
|
note: an implementation of `PartialEq` might be missing for `T1`
--> $DIR/binary-op-not-allowed-issue-125631.rs:4:1
|
LL | struct T1;
| ^^^^^^^^^ must implement `PartialEq`
note: the foreign item type `std::io::Error` doesn't implement `PartialEq`
--> $SRC_DIR/std/src/io/error.rs:LL:COL
|
= note: not implement `PartialEq`
help: consider annotating `T1` with `#[derive(PartialEq)]`
|
LL + #[derive(PartialEq)]
LL | struct T1;
|
error[E0369]: binary operation `==` cannot be applied to type `(std::io::Error, Thread)`
--> $DIR/binary-op-not-allowed-issue-125631.rs:11:9
|
LL | (Error::new(ErrorKind::Other, "2"), thread::current())
| ------------------------------------------------------ (std::io::Error, Thread)
LL | == (Error::new(ErrorKind::Other, "2"), thread::current());
| ^^ ------------------------------------------------------ (std::io::Error, Thread)
|
note: the foreign item types don't implement required traits for this operation to be valid
--> $SRC_DIR/std/src/io/error.rs:LL:COL
|
= note: not implement `PartialEq`
--> $SRC_DIR/std/src/thread/mod.rs:LL:COL
|
= note: not implement `PartialEq`
error[E0369]: binary operation `==` cannot be applied to type `(std::io::Error, Thread, T1, T2)`
--> $DIR/binary-op-not-allowed-issue-125631.rs:14:9
|
LL | (Error::new(ErrorKind::Other, "4"), thread::current(), T1, T2)
| -------------------------------------------------------------- (std::io::Error, Thread, T1, T2)
LL | == (Error::new(ErrorKind::Other, "4"), thread::current(), T1, T2);
| ^^ -------------------------------------------------------------- (std::io::Error, Thread, T1, T2)
|
note: the following types would have to `impl` their required traits for this operation to be valid
--> $DIR/binary-op-not-allowed-issue-125631.rs:4:1
|
LL | struct T1;
| ^^^^^^^^^ must implement `PartialEq`
LL | struct T2;
| ^^^^^^^^^ must implement `PartialEq`
note: the foreign item types don't implement required traits for this operation to be valid
--> $SRC_DIR/std/src/io/error.rs:LL:COL
|
= note: not implement `PartialEq`
--> $SRC_DIR/std/src/thread/mod.rs:LL:COL
|
= note: not implement `PartialEq`
help: consider annotating `T1` with `#[derive(PartialEq)]`
|
LL + #[derive(PartialEq)]
LL | struct T1;
|
help: consider annotating `T2` with `#[derive(PartialEq)]`
|
LL + #[derive(PartialEq)]
LL | struct T2;
|
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0369`.