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rustc: Remove #[rustc_synthetic]

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This function parameter attribute was introduced in https://github.com/rust-lang/rust/pull/44866 as an intermediate step in implementing `impl Trait`, it's not necessary or used anywhere by itself.
This commit is contained in:
Vadim Petrochenkov 2021-11-18 13:25:27 +08:00
parent 6414e0b5b3
commit 91e02177a1
17 changed files with 37 additions and 163 deletions
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28
src/test/ui/synthetic-param.rs
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@ -1,28 +0,0 @@
#![feature(rustc_attrs)]
fn func<#[rustc_synthetic] T>(_: T) {}
struct Foo;
impl Foo {
pub fn func<#[rustc_synthetic] T>(_: T) {}
}
struct Bar<S> {
t: S
}
impl<S> Bar<S> {
pub fn func<#[rustc_synthetic] T>(_: T) {}
}
fn main() {
func::<u8>(42); //~ ERROR cannot provide explicit generic arguments
func(42); // Ok
Foo::func::<u8>(42); //~ ERROR cannot provide explicit generic arguments
Foo::func(42); // Ok
Bar::<i8>::func::<u8>(42); //~ ERROR cannot provide explicit generic arguments
Bar::<i8>::func(42); // Ok
}

30
src/test/ui/synthetic-param.stderr
View file

@ -1,30 +0,0 @@
error[E0632]: cannot provide explicit generic arguments when `impl Trait` is used in argument position
--> $DIR/synthetic-param.rs:20:12
|
LL | func::<u8>(42);
| ^^ explicit generic argument not allowed
|
= note: see issue #83701 <https://github.com/rust-lang/rust/issues/83701> for more information
= help: add `#![feature(explicit_generic_args_with_impl_trait)]` to the crate attributes to enable
error[E0632]: cannot provide explicit generic arguments when `impl Trait` is used in argument position
--> $DIR/synthetic-param.rs:23:17
|
LL | Foo::func::<u8>(42);
| ^^ explicit generic argument not allowed
|
= note: see issue #83701 <https://github.com/rust-lang/rust/issues/83701> for more information
= help: add `#![feature(explicit_generic_args_with_impl_trait)]` to the crate attributes to enable
error[E0632]: cannot provide explicit generic arguments when `impl Trait` is used in argument position
--> $DIR/synthetic-param.rs:26:23
|
LL | Bar::<i8>::func::<u8>(42);
| ^^ explicit generic argument not allowed
|
= note: see issue #83701 <https://github.com/rust-lang/rust/issues/83701> for more information
= help: add `#![feature(explicit_generic_args_with_impl_trait)]` to the crate attributes to enable
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0632`.