39 lines
1006 B
Rust
39 lines
1006 B
Rust
#![warn(clippy::repeat_vec_with_capacity)]
|
|
|
|
fn main() {
|
|
{
|
|
vec![Vec::<()>::with_capacity(42); 123];
|
|
//~^ ERROR: repeating `Vec::with_capacity` using `vec![x; n]`, which does not retain capacity
|
|
}
|
|
|
|
{
|
|
let n = 123;
|
|
vec![Vec::<()>::with_capacity(42); n];
|
|
//~^ ERROR: repeating `Vec::with_capacity` using `vec![x; n]`, which does not retain capacity
|
|
}
|
|
|
|
{
|
|
macro_rules! from_macro {
|
|
($x:expr) => {
|
|
vec![$x; 123];
|
|
};
|
|
}
|
|
// vec expansion is from another macro, don't lint
|
|
from_macro!(Vec::<()>::with_capacity(42));
|
|
}
|
|
|
|
{
|
|
std::iter::repeat(Vec::<()>::with_capacity(42));
|
|
//~^ ERROR: repeating `Vec::with_capacity` using `iter::repeat`, which does not retain capacity
|
|
}
|
|
|
|
{
|
|
macro_rules! from_macro {
|
|
($x:expr) => {
|
|
std::iter::repeat($x)
|
|
};
|
|
}
|
|
from_macro!(Vec::<()>::with_capacity(42));
|
|
}
|
|
}
|