rust/tests/compile-fail/check_arg_count_too_few_args.rs

#![feature(core_intrinsics)]
#![feature(rustc_private)]

fn main() {
    extern "C" {
        fn malloc() -> *mut std::ffi::c_void;
    }

    unsafe {
        let _ = malloc(); //~ ERROR Undefined Behavior: incorrect number of arguments: got 0, expected 1
    };
}