//@ aux-crate:fn_header_aux=fn-header-aux.rs #![feature(c_variadic)] #![feature(fn_delegation)] #![allow(incomplete_features)] mod to_reuse { pub unsafe extern "C" fn variadic_fn(n: usize, mut args: ...) {} } reuse to_reuse::variadic_fn; //~^ ERROR delegation to C-variadic functions is not allowed reuse fn_header_aux::variadic_fn_extern; //~^ ERROR delegation to C-variadic functions is not allowed fn main() { unsafe { variadic_fn(0); variadic_fn(0, 1); variadic_fn_extern(0); variadic_fn_extern(0, 1); } let _: unsafe extern "C" fn(usize, ...) = variadic_fn; let _: unsafe extern "C" fn(usize, ...) = variadic_fn_extern; }