rust/tests/ui/proc-macro/item-error.rs

// aux-build:derive-b.rs

#![allow(warnings)]

#[macro_use]
extern crate derive_b;

#[derive(B)]
struct A {
    a: &u64
//~^ ERROR: missing lifetime specifier
}

fn main() {
}
Allow proc_macro functions to whitelist specific attributes By using a second attribute `attributes(Bar)` on proc_macro_derive, whitelist any attributes with the name `Bar` in the deriving item. This allows a proc_macro function to use custom attribtues without a custom attribute error or unused attribute lint. 2016-11-08 11:15:02 +00:00			`// aux-build:derive-b.rs`

			`#![allow(warnings)]`

			`#[macro_use]`
			`extern crate derive_b;`

			`#[derive(B)]`
			`struct A {`
			`a: &u64`
			`//~^ ERROR: missing lifetime specifier`
			`}`

			`fn main() {`
			`}`