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#![allow(private_interfaces)]
#![deny(improper_ctypes_definitions)]
use std::default::Default;
use std::marker::PhantomData;
use std::ffi::{c_int, c_uint};
trait Trait {}
trait Mirror { type It: ?Sized; }
impl<T: ?Sized> Mirror for T { type It = Self; }
#[repr(C)]
pub struct StructWithProjection(*mut <StructWithProjection as Mirror>::It);
#[repr(C)]
pub struct StructWithProjectionAndLifetime<'a>(
&'a mut <StructWithProjectionAndLifetime<'a> as Mirror>::It
);
pub type I32Pair = (i32, i32);
#[repr(C)]
pub struct ZeroSize;
pub type RustFn = fn();
pub type RustBadRet = extern "C" fn() -> Box<u32>;
pub type CVoidRet = ();
pub struct Foo;
#[repr(transparent)]
pub struct TransparentI128(i128);
#[repr(transparent)]
pub struct TransparentStr(&'static str);
#[repr(transparent)]
pub struct TransparentBadFn(RustBadRet);
#[repr(transparent)]
pub struct TransparentInt(u32);
#[repr(transparent)]
pub struct TransparentRef<'a>(&'a TransparentInt);
#[repr(transparent)]
pub struct TransparentLifetime<'a>(*const u8, PhantomData<&'a ()>);
#[repr(transparent)]
pub struct TransparentUnit<U>(f32, PhantomData<U>);
#[repr(transparent)]
pub struct TransparentCustomZst(i32, ZeroSize);
#[repr(C)]
pub struct ZeroSizeWithPhantomData(PhantomData<i32>);
pub extern "C" fn ptr_type1(size: *const Foo) { }
pub extern "C" fn ptr_type2(size: *const Foo) { }
pub extern "C" fn ptr_unit(p: *const ()) { }
pub extern "C" fn ptr_tuple(p: *const ((),)) { }
pub extern "C" fn slice_type(p: &[u32]) { }
//~^ ERROR: uses type `[u32]`
pub extern "C" fn str_type(p: &str) { }
//~^ ERROR: uses type `str`
pub extern "C" fn box_type(p: Box<u32>) { }
pub extern "C" fn opt_box_type(p: Option<Box<u32>>) { }
pub extern "C" fn boxed_slice(p: Box<[u8]>) { }
//~^ ERROR: uses type `Box<[u8]>`
pub extern "C" fn boxed_string(p: Box<str>) { }
//~^ ERROR: uses type `Box<str>`
pub extern "C" fn boxed_trait(p: Box<dyn Trait>) { }
//~^ ERROR: uses type `Box<dyn Trait>`
pub extern "C" fn char_type(p: char) { }
//~^ ERROR uses type `char`
pub extern "C" fn i128_type(p: i128) { }
//~^ ERROR uses type `i128`
pub extern "C" fn u128_type(p: u128) { }
//~^ ERROR uses type `u128`
pub extern "C" fn tuple_type(p: (i32, i32)) { }
//~^ ERROR uses type `(i32, i32)`
pub extern "C" fn tuple_type2(p: I32Pair) { }
//~^ ERROR uses type `(i32, i32)`
pub extern "C" fn zero_size(p: ZeroSize) { }
//~^ ERROR uses type `ZeroSize`
pub extern "C" fn zero_size_phantom(p: ZeroSizeWithPhantomData) { }
//~^ ERROR uses type `ZeroSizeWithPhantomData`
pub extern "C" fn zero_size_phantom_toplevel() -> PhantomData<bool> {
//~^ ERROR uses type `PhantomData<bool>`
Default::default()
}
pub extern "C" fn fn_type(p: RustFn) { }
//~^ ERROR uses type `fn()`
pub extern "C" fn fn_type2(p: fn()) { }
//~^ ERROR uses type `fn()`
pub extern "C" fn fn_contained(p: RustBadRet) { }
pub extern "C" fn transparent_i128(p: TransparentI128) { }
//~^ ERROR: uses type `i128`
pub extern "C" fn transparent_str(p: TransparentStr) { }
//~^ ERROR: uses type `str`
pub extern "C" fn transparent_fn(p: TransparentBadFn) { }
pub extern "C" fn good3(fptr: Option<extern "C" fn()>) { }
pub extern "C" fn good4(aptr: &[u8; 4 as usize]) { }
pub extern "C" fn good5(s: StructWithProjection) { }
pub extern "C" fn good6(s: StructWithProjectionAndLifetime) { }
pub extern "C" fn good7(fptr: extern "C" fn() -> ()) { }
pub extern "C" fn good8(fptr: extern "C" fn() -> !) { }
pub extern "C" fn good9() -> () { }
pub extern "C" fn good10() -> CVoidRet { }
pub extern "C" fn good11(size: isize) { }
pub extern "C" fn good12(size: usize) { }
pub extern "C" fn good13(n: TransparentInt) { }
pub extern "C" fn good14(p: TransparentRef) { }
pub extern "C" fn good15(p: TransparentLifetime) { }
pub extern "C" fn good16(p: TransparentUnit<ZeroSize>) { }
pub extern "C" fn good17(p: TransparentCustomZst) { }
#[allow(improper_ctypes_definitions)]
pub extern "C" fn good18(_: &String) { }
#[cfg(not(target_arch = "wasm32"))]
pub extern "C" fn good1(size: *const c_int) { }
#[cfg(not(target_arch = "wasm32"))]
pub extern "C" fn good2(size: *const c_uint) { }
pub extern "C" fn unused_generic1<T>(size: *const Foo) { }
pub extern "C" fn unused_generic2<T>() -> PhantomData<bool> {
//~^ ERROR uses type `PhantomData<bool>`
Default::default()
}
pub extern "C" fn used_generic1<T>(x: T) { }
pub extern "C" fn used_generic2<T>(x: T, size: *const Foo) { }
pub extern "C" fn used_generic3<T: Default>() -> T {
Default::default()
}
pub extern "C" fn used_generic4<T>(x: Vec<T>) { }
//~^ ERROR: uses type `Vec<T>`
pub extern "C" fn used_generic5<T>() -> Vec<T> {
//~^ ERROR: uses type `Vec<T>`
Default::default()
}
fn main() {}
|
