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add a silly test for keywords in trait bounds recovery

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This commit is contained in:
Maybe Waffle 2022-07-29 21:59:08 +04:00
parent c6558c0bc7
commit 798016c2df
2 changed files with 218 additions and 0 deletions
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47
src/test/ui/parser/kw-in-trait-bounds.rs Normal file
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@ -0,0 +1,47 @@
// edition:2018
fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
//~^ ERROR expected identifier, found keyword `fn`
//~| ERROR expected identifier, found keyword `fn`
//~| ERROR expected identifier, found keyword `fn`
//~| ERROR cannot find trait `r#fn` in this scope
//~| ERROR cannot find trait `r#fn` in this scope
//~| ERROR cannot find trait `r#fn` in this scope
//~| HELP a trait with a similar name exists
//~| HELP a trait with a similar name exists
//~| HELP a trait with a similar name exists
//~| HELP escape `fn` to use it as an identifier
//~| HELP escape `fn` to use it as an identifier
//~| HELP escape `fn` to use it as an identifier
where
G: fn(),
//~^ ERROR expected identifier, found keyword `fn`
//~| ERROR cannot find trait `r#fn` in this scope
//~| HELP a trait with a similar name exists
//~| HELP escape `fn` to use it as an identifier
{}
fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
//~^ ERROR expected identifier, found keyword `struct`
//~| ERROR expected identifier, found keyword `struct`
//~| ERROR expected identifier, found keyword `struct`
//~| ERROR cannot find trait `r#struct` in this scope
//~| ERROR cannot find trait `r#struct` in this scope
//~| ERROR cannot find trait `r#struct` in this scope
//~| HELP a trait with a similar name exists
//~| HELP a trait with a similar name exists
//~| HELP a trait with a similar name exists
//~| HELP escape `struct` to use it as an identifier
//~| HELP escape `struct` to use it as an identifier
//~| HELP escape `struct` to use it as an identifier
where
B: struct,
//~^ ERROR expected identifier, found keyword `struct`
//~| ERROR cannot find trait `r#struct` in this scope
//~| HELP a trait with a similar name exists
//~| HELP escape `struct` to use it as an identifier
{}
trait Struct {}
fn main() {}

171
src/test/ui/parser/kw-in-trait-bounds.stderr Normal file
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error: expected identifier, found keyword `fn`
--> $DIR/kw-in-trait-bounds.rs:3:10
|
LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
| ^^ expected identifier, found keyword
|
help: escape `fn` to use it as an identifier
|
LL | fn _f<F: r#fn(), G>(_: impl fn(), _: &dyn fn())
| ++
error: expected identifier, found keyword `fn`
--> $DIR/kw-in-trait-bounds.rs:3:27
|
LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
| ^^ expected identifier, found keyword
|
help: escape `fn` to use it as an identifier
|
LL | fn _f<F: fn(), G>(_: impl r#fn(), _: &dyn fn())
| ++
error: expected identifier, found keyword `fn`
--> $DIR/kw-in-trait-bounds.rs:3:41
|
LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
| ^^ expected identifier, found keyword
|
help: escape `fn` to use it as an identifier
|
LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn r#fn())
| ++
error: expected identifier, found keyword `fn`
--> $DIR/kw-in-trait-bounds.rs:17:4
|
LL | G: fn(),
| ^^ expected identifier, found keyword
|
help: escape `fn` to use it as an identifier
|
LL | G: r#fn(),
| ++
error: expected identifier, found keyword `struct`
--> $DIR/kw-in-trait-bounds.rs:24:10
|
LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
| ^^^^^^ expected identifier, found keyword
|
help: escape `struct` to use it as an identifier
|
LL | fn _g<A: r#struct, B>(_: impl struct, _: &dyn struct)
| ++
error: expected identifier, found keyword `struct`
--> $DIR/kw-in-trait-bounds.rs:24:29
|
LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
| ^^^^^^ expected identifier, found keyword
|
help: escape `struct` to use it as an identifier
|
LL | fn _g<A: struct, B>(_: impl r#struct, _: &dyn struct)
| ++
error: expected identifier, found keyword `struct`
--> $DIR/kw-in-trait-bounds.rs:24:45
|
LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
| ^^^^^^ expected identifier, found keyword
|
help: escape `struct` to use it as an identifier
|
LL | fn _g<A: struct, B>(_: impl struct, _: &dyn r#struct)
| ++
error: expected identifier, found keyword `struct`
--> $DIR/kw-in-trait-bounds.rs:38:8
|
LL | B: struct,
| ^^^^^^ expected identifier, found keyword
|
help: escape `struct` to use it as an identifier
|
LL | B: r#struct,
| ++
error[E0405]: cannot find trait `r#fn` in this scope
--> $DIR/kw-in-trait-bounds.rs:3:10
|
LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
| ^^ help: a trait with a similar name exists (notice the capitalization): `Fn`
|
::: $SRC_DIR/core/src/ops/function.rs:LL:COL
|
LL | pub trait Fn<Args>: FnMut<Args> {
| ------------------------------- similarly named trait `Fn` defined here
error[E0405]: cannot find trait `r#fn` in this scope
--> $DIR/kw-in-trait-bounds.rs:17:4
|
LL | G: fn(),
| ^^ help: a trait with a similar name exists (notice the capitalization): `Fn`
|
::: $SRC_DIR/core/src/ops/function.rs:LL:COL
|
LL | pub trait Fn<Args>: FnMut<Args> {
| ------------------------------- similarly named trait `Fn` defined here
error[E0405]: cannot find trait `r#fn` in this scope
--> $DIR/kw-in-trait-bounds.rs:3:27
|
LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
| ^^ help: a trait with a similar name exists (notice the capitalization): `Fn`
|
::: $SRC_DIR/core/src/ops/function.rs:LL:COL
|
LL | pub trait Fn<Args>: FnMut<Args> {
| ------------------------------- similarly named trait `Fn` defined here
error[E0405]: cannot find trait `r#fn` in this scope
--> $DIR/kw-in-trait-bounds.rs:3:41
|
LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
| ^^ help: a trait with a similar name exists (notice the capitalization): `Fn`
|
::: $SRC_DIR/core/src/ops/function.rs:LL:COL
|
LL | pub trait Fn<Args>: FnMut<Args> {
| ------------------------------- similarly named trait `Fn` defined here
error[E0405]: cannot find trait `r#struct` in this scope
--> $DIR/kw-in-trait-bounds.rs:24:10
|
LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
| ^^^^^^ help: a trait with a similar name exists (notice the capitalization): `Struct`
...
LL | trait Struct {}
| ------------ similarly named trait `Struct` defined here
error[E0405]: cannot find trait `r#struct` in this scope
--> $DIR/kw-in-trait-bounds.rs:38:8
|
LL | B: struct,
| ^^^^^^ help: a trait with a similar name exists (notice the capitalization): `Struct`
...
LL | trait Struct {}
| ------------ similarly named trait `Struct` defined here
error[E0405]: cannot find trait `r#struct` in this scope
--> $DIR/kw-in-trait-bounds.rs:24:29
|
LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
| ^^^^^^ help: a trait with a similar name exists (notice the capitalization): `Struct`
...
LL | trait Struct {}
| ------------ similarly named trait `Struct` defined here
error[E0405]: cannot find trait `r#struct` in this scope
--> $DIR/kw-in-trait-bounds.rs:24:45
|
LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
| ^^^^^^ help: a trait with a similar name exists (notice the capitalization): `Struct`
...
LL | trait Struct {}
| ------------ similarly named trait `Struct` defined here
error: aborting due to 16 previous errors
For more information about this error, try `rustc --explain E0405`.