rust-clippy/tests/ui/auxiliary/proc_macro_derive.rs
Philipp Hansch 60a1759b5f
Add test for derives for used_underscore_binding lint
This closes #852 as I can't reproduce the original issue anymore.
2019-04-20 09:33:13 +02:00

22 lines
550 B
Rust

// no-prefer-dynamic
#![crate_type = "proc-macro"]
#![feature(repr128, proc_macro_hygiene, proc_macro_quote)]
extern crate proc_macro;
use proc_macro::{quote, TokenStream};
#[proc_macro_derive(DeriveSomething)]
pub fn derive(_: TokenStream) -> TokenStream {
// Shound not trigger `used_underscore_binding`
let _inside_derive = 1;
assert_eq!(_inside_derive, _inside_derive);
let output = quote! {
// Should not trigger `useless_attribute`
#[allow(dead_code)]
extern crate clippy_lints;
};
output
}