rust/tests/ui/proc-macro/signature.rs
2024-02-16 20:02:50 +00:00

14 lines
265 B
Rust

//@ force-host
//@ no-prefer-dynamic
#![crate_type = "proc-macro"]
#![allow(warnings)]
extern crate proc_macro;
#[proc_macro_derive(A)]
pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
//~^ ERROR: derive proc macro has incorrect signature
loop {}
}