rust/tests/ui/declare_interior_mutable_const/others.rs
rail be8160878a split interior_mutable_const tests and clean it
* remove a 'ERROR' comment from `borrow`
   `Vec<AtomicUsize>` itself is `Freeze` as it holds the atomic in heap
* remove `ONCE_INIT` from `declare`
   it seems like an artifact from previous spliting
2020-10-04 18:12:53 +13:00

35 lines
1.0 KiB
Rust

#![warn(clippy::declare_interior_mutable_const)]
use std::borrow::Cow;
use std::cell::Cell;
use std::fmt::Display;
use std::sync::atomic::AtomicUsize;
use std::sync::Once;
const ATOMIC: AtomicUsize = AtomicUsize::new(5); //~ ERROR interior mutable
const CELL: Cell<usize> = Cell::new(6); //~ ERROR interior mutable
const ATOMIC_TUPLE: ([AtomicUsize; 1], Vec<AtomicUsize>, u8) = ([ATOMIC], Vec::new(), 7);
//~^ ERROR interior mutable
macro_rules! declare_const {
($name:ident: $ty:ty = $e:expr) => {
const $name: $ty = $e;
};
}
declare_const!(_ONCE: Once = Once::new()); //~ ERROR interior mutable
// const ATOMIC_REF: &AtomicUsize = &AtomicUsize::new(7); // This will simply trigger E0492.
const INTEGER: u8 = 8;
const STRING: String = String::new();
const STR: &str = "012345";
const COW: Cow<str> = Cow::Borrowed("abcdef");
//^ note: a const item of Cow is used in the `postgres` package.
const NO_ANN: &dyn Display = &70;
static STATIC_TUPLE: (AtomicUsize, String) = (ATOMIC, STRING);
//^ there should be no lints on this line
fn main() {}