| //@ compile-flags: -Copt-level=3 | |
| #![crate_type = "lib"] | |
| use std::mem::MaybeUninit; | |
| // We need to make sure len is at offset 0, otherwise codegen needs an extra instruction | |
| #[repr(C)] | |
| pub struct SmallVec<T> { | |
| pub len: u64, | |
| pub arr: [MaybeUninit<T>; 24], | |
| } | |
| // CHECK-LABEL: @uninit_arr_via_const | |
| #[no_mangle] | |
| pub fn uninit_arr_via_const() -> SmallVec<String> { | |
| // CHECK-NEXT: start: | |
| // CHECK-NEXT: store i64 0, | |
| // CHECK-NEXT: ret | |
| SmallVec { len: 0, arr: [const { MaybeUninit::uninit() }; 24] } | |
| } |