57 lines
1.5 KiB
Rust
57 lines
1.5 KiB
Rust
#![warn(clippy::declare_interior_mutable_const)]
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use std::borrow::Cow;
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use std::cell::Cell;
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use std::fmt::Display;
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use std::sync::atomic::AtomicUsize;
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use std::sync::Once;
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const ATOMIC: AtomicUsize = AtomicUsize::new(5); //~ ERROR: interior mutable
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const CELL: Cell<usize> = Cell::new(6); //~ ERROR: interior mutable
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const ATOMIC_TUPLE: ([AtomicUsize; 1], Vec<AtomicUsize>, u8) = ([ATOMIC], Vec::new(), 7);
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//~^ ERROR: interior mutable
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macro_rules! declare_const {
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($name:ident: $ty:ty = $e:expr) => {
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const $name: $ty = $e;
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//~^ ERROR: interior mutable
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};
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}
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declare_const!(_ONCE: Once = Once::new());
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// const ATOMIC_REF: &AtomicUsize = &AtomicUsize::new(7); // This will simply trigger E0492.
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const INTEGER: u8 = 8;
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const STRING: String = String::new();
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const STR: &str = "012345";
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const COW: Cow<str> = Cow::Borrowed("abcdef");
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// note: a const item of Cow is used in the `postgres` package.
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const NO_ANN: &dyn Display = &70;
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static STATIC_TUPLE: (AtomicUsize, String) = (ATOMIC, STRING);
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// there should be no lints on the line above line
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mod issue_8493 {
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use std::cell::Cell;
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thread_local! {
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static _BAR: Cell<i32> = const { Cell::new(0) };
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}
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macro_rules! issue_8493 {
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() => {
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const _BAZ: Cell<usize> = Cell::new(0);
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static _FOOBAR: () = {
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thread_local! {
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static _VAR: Cell<i32> = const { Cell::new(0) };
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}
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};
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};
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}
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issue_8493!();
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}
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fn main() {}
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