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//@ run-pass
//@ ignore-backends: gcc
#![feature(c_variadic)]
#[repr(transparent)]
struct S(i32);
impl S {
unsafe extern "C" fn associated_function(mut ap: ...) -> i32 {
unsafe { ap.arg() }
}
unsafe extern "C" fn method_owned(self, mut ap: ...) -> i32 {
self.0 + unsafe { ap.arg::<i32>() }
}
unsafe extern "C" fn method_ref(&self, mut ap: ...) -> i32 {
self.0 + unsafe { ap.arg::<i32>() }
}
unsafe extern "C" fn method_mut(&mut self, mut ap: ...) -> i32 {
self.0 + unsafe { ap.arg::<i32>() }
}
unsafe extern "C" fn fat_pointer(self: Box<Self>, mut ap: ...) -> i32 {
self.0 + unsafe { ap.arg::<i32>() }
}
}
fn main() {
unsafe {
assert_eq!(S::associated_function(32), 32);
assert_eq!(S(100).method_owned(32), 132);
assert_eq!(S(100).method_ref(32), 132);
assert_eq!(S(100).method_mut(32), 132);
assert_eq!(S::fat_pointer(Box::new(S(100)), 32), 132);
type Method<T> = unsafe extern "C" fn(T, ...) -> i32;
assert_eq!((S::associated_function as unsafe extern "C" fn(...) -> i32)(32), 32);
assert_eq!((S::method_owned as Method<_>)(S(100), 32), 132);
assert_eq!((S::method_ref as Method<_>)(&S(100), 32), 132);
assert_eq!((S::method_mut as Method<_>)(&mut S(100), 32), 132);
assert_eq!((S::fat_pointer as Method<_>)(Box::new(S(100)), 32), 132);
}
}
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