tests/ui/parser/variadic-ffi-semantic-restrictions.rs

#![feature(c_variadic)]
#![allow(anonymous_parameters)]

fn main() {}

fn f1_1(x: isize, _: ...) {}
//~^ ERROR `...` is not supported for non-extern functions

fn f1_2(_: ...) {}
//~^ ERROR `...` is not supported for non-extern functions

unsafe extern "Rust" fn f1_3(_: ...) {}
//~^ ERROR `...` is not supported for `extern "Rust"` functions

extern "C" fn f2_1(x: isize, _: ...) {}
//~^ ERROR functions with a C variable argument list must be unsafe

extern "C" fn f2_2(_: ...) {}
//~^ ERROR functions with a C variable argument list must be unsafe

extern "C" fn f2_3(_: ..., x: isize) {}
//~^ ERROR `...` must be the last argument of a C-variadic function

extern "C" fn f3_1(x: isize, _: ...) {}
//~^ ERROR functions with a C variable argument list must be unsafe

extern "C" fn f3_2(_: ...) {}
//~^ ERROR functions with a C variable argument list must be unsafe

extern "C" fn f3_3(_: ..., x: isize) {}
//~^ ERROR `...` must be the last argument of a C-variadic function

const unsafe extern "C" fn f4_1(x: isize, _: ...) {}
//~^ ERROR destructor of `VaList<'_>` cannot be evaluated at compile-time
//~| ERROR c-variadic const function definitions are unstable

const extern "C" fn f4_2(x: isize, _: ...) {}
//~^ ERROR functions with a C variable argument list must be unsafe
//~| ERROR destructor of `VaList<'_>` cannot be evaluated at compile-time
//~| ERROR c-variadic const function definitions are unstable

const extern "C" fn f4_3(_: ..., x: isize, _: ...) {}
//~^ ERROR functions with a C variable argument list must be unsafe
//~| ERROR `...` must be the last argument of a C-variadic function
//~| ERROR c-variadic const function definitions are unstable

extern "C" {
    fn e_f2(..., x: isize);
    //~^ ERROR `...` must be the last argument of a C-variadic function
}

struct X;

impl X {
    fn i_f1(x: isize, _: ...) {}
    //~^ ERROR `...` is not supported for non-extern functions
    fn i_f2(_: ...) {}
    //~^ ERROR `...` is not supported for non-extern functions
    fn i_f3(_: ..., x: isize, _: ...) {}
    //~^ ERROR `...` is not supported for non-extern functions
    //~| ERROR `...` must be the last argument of a C-variadic function
    fn i_f4(_: ..., x: isize, _: ...) {}
    //~^ ERROR `...` is not supported for non-extern functions
    //~| ERROR `...` must be the last argument of a C-variadic function
    const fn i_f5(x: isize, _: ...) {}
    //~^ ERROR `...` is not supported for non-extern functions
    //~| ERROR destructor of `VaList<'_>` cannot be evaluated at compile-time
    //~| ERROR c-variadic const function definitions are unstable
}

trait T {
    fn t_f1(x: isize, _: ...) {}
    //~^ ERROR `...` is not supported for non-extern functions
    fn t_f2(x: isize, _: ...);
    //~^ ERROR `...` is not supported for non-extern functions
    fn t_f3(_: ...) {}
    //~^ ERROR `...` is not supported for non-extern functions
    fn t_f4(_: ...);
    //~^ ERROR `...` is not supported for non-extern functions
    fn t_f5(_: ..., x: isize) {}
    //~^ ERROR `...` must be the last argument of a C-variadic function
    fn t_f6(_: ..., x: isize);
    //~^ ERROR `...` must be the last argument of a C-variadic function
}