| #![feature(const_fn)] | |
| const ARR_LEN: usize = Tt::const_val::<[i8; 123]>(); | |
| //~^ ERROR constant contains unimplemented expression type | |
| trait Tt { | |
| const fn const_val<T: Sized>() -> usize { | |
| //~^ ERROR trait fns cannot be declared const | |
| core::mem::size_of::<T>() | |
| } | |
| } | |
| fn f(z: [f32; ARR_LEN]) -> [f32; ARR_LEN] { | |
| z | |
| } | |
| fn main() { | |
| let _ = f([1f32; ARR_LEN]); | |
| } |