rust/tests/ui/init_numbered_fields.rs

60 lines
1.2 KiB
Rust

#![warn(clippy::init_numbered_fields)]
#[derive(Default)]
struct TupleStruct(u32, u32, u8);
// This shouldn't lint because it's in a macro
macro_rules! tuple_struct_init {
() => {
TupleStruct { 0: 0, 1: 1, 2: 2 }
};
}
fn main() {
let tuple_struct = TupleStruct::default();
// This should lint
let _ = TupleStruct {
0: 1u32,
1: 42,
2: 23u8,
};
// This should also lint and order the fields correctly
let _ = TupleStruct {
0: 1u32,
2: 2u8,
1: 3u32,
};
// Ok because of default initializer
let _ = TupleStruct { 0: 42, ..tuple_struct };
let _ = TupleStruct {
1: 23,
..TupleStruct::default()
};
// Ok because it's in macro
let _ = tuple_struct_init!();
type Alias = TupleStruct;
// Aliases can't be tuple constructed #8638
let _ = Alias { 0: 0, 1: 1, 2: 2 };
// Issue #12367
struct TupleStructVec(Vec<usize>);
let _ = TupleStructVec { 0: vec![0, 1, 2, 3] };
{
struct S(i32, i32);
let mut iter = [1i32, 1i32].into_iter();
let _ = S {
1: iter.next().unwrap(),
0: iter.next().unwrap(),
};
}
}