rust/tests/ui/feature-gates/issue-43106-gating-of-derive.rs
2023-01-11 09:32:08 +00:00

34 lines
889 B
Rust

// `#![derive]` raises errors when it occurs at contexts other than ADT
// definitions.
#[derive(Debug)]
//~^ ERROR `derive` may only be applied to `struct`s, `enum`s and `union`s
mod derive {
mod inner { #![derive(Debug)] }
//~^ ERROR `derive` may only be applied to `struct`s, `enum`s and `union`s
//~| ERROR inner macro attributes are unstable
#[derive(Debug)]
//~^ ERROR `derive` may only be applied to `struct`s, `enum`s and `union`s
fn derive() { }
#[derive(Copy, Clone)] // (can't derive Debug for unions)
union U { f: i32 }
#[derive(Debug)]
struct S;
#[derive(Debug)]
enum E { }
#[derive(Debug)]
//~^ ERROR `derive` may only be applied to `struct`s, `enum`s and `union`s
type T = S;
#[derive(Debug)]
//~^ ERROR `derive` may only be applied to `struct`s, `enum`s and `union`s
impl S { }
}
fn main() {}