rust/tests/ui/temporary_assignment.rs
Aaron Hill f23670ed68 Adjust Clippy for CONST_ITEM_MUTATION lint
We no longer lint assignments to const item fields in the
`temporary_assignment` lint, since this is now covered by the
`CONST_ITEM_MUTATION` lint.

Additionally, we `#![allow(const_item_mutation)]` in the
`borrow_interior_mutable_const.rs` test. Clippy UI tests are run with
`-D warnings`, which seems to cause builtin lints to prevent Clippy
lints from running.
2020-09-08 17:59:56 -04:00

77 lines
1.4 KiB
Rust

#![warn(clippy::temporary_assignment)]
#![allow(const_item_mutation)]
use std::ops::{Deref, DerefMut};
struct TupleStruct(i32);
struct Struct {
field: i32,
}
struct MultiStruct {
structure: Struct,
}
struct Wrapper<'a> {
inner: &'a mut Struct,
}
impl<'a> Deref for Wrapper<'a> {
type Target = Struct;
fn deref(&self) -> &Struct {
self.inner
}
}
impl<'a> DerefMut for Wrapper<'a> {
fn deref_mut(&mut self) -> &mut Struct {
self.inner
}
}
struct ArrayStruct {
array: [i32; 1],
}
const A: TupleStruct = TupleStruct(1);
const B: Struct = Struct { field: 1 };
const C: MultiStruct = MultiStruct {
structure: Struct { field: 1 },
};
const D: ArrayStruct = ArrayStruct { array: [1] };
fn main() {
let mut s = Struct { field: 0 };
let mut t = (0, 0);
Struct { field: 0 }.field = 1;
MultiStruct {
structure: Struct { field: 0 },
}
.structure
.field = 1;
ArrayStruct { array: [0] }.array[0] = 1;
(0, 0).0 = 1;
A.0 = 2;
B.field = 2;
C.structure.field = 2;
D.array[0] = 2;
// no error
s.field = 1;
t.0 = 1;
Wrapper { inner: &mut s }.field = 1;
let mut a_mut = TupleStruct(1);
a_mut.0 = 2;
let mut b_mut = Struct { field: 1 };
b_mut.field = 2;
let mut c_mut = MultiStruct {
structure: Struct { field: 1 },
};
c_mut.structure.field = 2;
let mut d_mut = ArrayStruct { array: [1] };
d_mut.array[0] = 2;
}