1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
|
//@ revisions: full min
#![allow(incomplete_features)]
#![cfg_attr(full, feature(generic_const_exprs))]
#![cfg_attr(full, allow(incomplete_features))]
trait HasSize {
const SIZE: usize;
}
impl<const X: usize> HasSize for ArrayHolder<X> {
const SIZE: usize = X;
}
struct ArrayHolder<const X: usize>([u32; X]);
impl<const X: usize> ArrayHolder<X> {
pub const fn new() -> Self {
ArrayHolder([0; Self::SIZE])
//~^ ERROR mismatched types
//[full]~^^ ERROR unconstrained generic constant
//[min]~^^^ ERROR constant expression depends on a generic parameter
}
}
fn main() {
let mut array = ArrayHolder::new();
//~^ ERROR: type annotations needed
}
|