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[rustc.git] / src / test / ui / c-variadic / variadic-ffi-1.rs

// needs-llvm-components: x86
// compile-flags: --target=i686-pc-windows-msvc --crate-type=rlib
#![no_core]
#![feature(no_core, lang_items)]
#[lang="sized"]
trait Sized { }

extern "stdcall" {
    fn printf(_: *const u8, ...);
    //~^ ERROR: C-variadic function must have a compatible calling convention,
    // like C, cdecl, win64, sysv64 or efiapi
}

extern "C" {
    fn foo(f: isize, x: u8, ...);
}

extern "C" fn bar(f: isize, x: u8) {}

fn main() {
    unsafe {
        foo(); //~ ERROR this function takes at least 2 arguments but 0 arguments were supplied
        foo(1); //~ ERROR this function takes at least 2 arguments but 1 argument was supplied

        let x: unsafe extern "C" fn(f: isize, x: u8) = foo; //~ ERROR mismatched types
        let y: extern "C" fn(f: isize, x: u8, ...) = bar; //~ ERROR mismatched types

        foo(1, 2, 3f32); //~ ERROR can't pass
        foo(1, 2, true); //~ ERROR can't pass
        foo(1, 2, 1i8); //~ ERROR can't pass
        foo(1, 2, 1u8); //~ ERROR can't pass
        foo(1, 2, 1i16); //~ ERROR can't pass
        foo(1, 2, 1u16); //~ ERROR can't pass
    }
}