// compile-flags: --emit=link // no-prefer-dynamic #![crate_type = "proc-macro"] #![feature(repr128, proc_macro_quote)] #![allow(incomplete_features)] #![allow(clippy::field_reassign_with_default)] #![allow(clippy::eq_op)] 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 rustc_middle; }; output } #[proc_macro_derive(FieldReassignWithDefault)] pub fn derive_foo(_input: TokenStream) -> TokenStream { quote! { #[derive(Default)] struct A { pub i: i32, pub j: i64, } #[automatically_derived] fn lint() { let mut a: A = Default::default(); a.i = 42; a; } } }