122 lines
2.5 KiB
Rust
122 lines
2.5 KiB
Rust
#![allow(unused_variables)]
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#![warn(clippy::vec_init_then_push)]
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//@no-rustfix
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fn main() {
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let mut def_err: Vec<u32> = Default::default();
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//~^ ERROR: calls to `push` immediately after creation
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//~| NOTE: `-D clippy::vec-init-then-push` implied by `-D warnings`
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def_err.push(0);
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let mut new_err = Vec::<u32>::new();
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//~^ ERROR: calls to `push` immediately after creation
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new_err.push(1);
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let mut cap_err = Vec::with_capacity(2);
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//~^ ERROR: calls to `push` immediately after creation
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cap_err.push(0);
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cap_err.push(1);
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cap_err.push(2);
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if true {
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// don't include this one
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cap_err.push(3);
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}
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let mut cap_ok = Vec::with_capacity(10);
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cap_ok.push(0);
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new_err = Vec::new();
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//~^ ERROR: calls to `push` immediately after creation
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new_err.push(0);
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let mut vec = Vec::new();
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// control flow at block final expression
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if true {
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// no lint
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vec.push(1);
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}
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let mut vec = Vec::with_capacity(5);
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vec.push(1);
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vec.push(2);
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vec.push(3);
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vec.push(4);
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}
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pub fn no_lint() -> Vec<i32> {
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let mut p = Some(1);
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let mut vec = Vec::new();
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loop {
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match p {
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None => return vec,
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Some(i) => {
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vec.push(i);
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p = None;
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},
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}
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}
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}
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fn _from_iter(items: impl Iterator<Item = u32>) -> Vec<u32> {
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let mut v = Vec::new();
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v.push(0);
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v.push(1);
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v.extend(items);
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v
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}
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fn _cond_push(x: bool) -> Vec<u32> {
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let mut v = Vec::new();
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v.push(0);
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if x {
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v.push(1);
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}
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v.push(2);
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v
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}
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fn _push_then_edit(x: u32) -> Vec<u32> {
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let mut v = Vec::new();
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//~^ ERROR: calls to `push` immediately after creation
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v.push(x);
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v.push(1);
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v[0] = v[1] + 5;
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v
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}
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fn _cond_push_with_large_start(x: bool) -> Vec<u32> {
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let mut v = Vec::new();
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//~^ ERROR: calls to `push` immediately after creation
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v.push(0);
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v.push(1);
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v.push(0);
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v.push(1);
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v.push(0);
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v.push(0);
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v.push(1);
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v.push(0);
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if x {
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v.push(1);
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}
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let mut v2 = Vec::new();
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//~^ ERROR: calls to `push` immediately after creation
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v2.push(0);
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v2.push(1);
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v2.push(0);
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v2.push(1);
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v2.push(0);
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v2.push(0);
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v2.push(1);
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v2.push(0);
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v2.extend(&v);
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v2
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}
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fn f() {
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let mut v = Vec::new();
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//~^ ERROR: calls to `push` immediately after creation
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v.push((0i32, 0i32));
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let y = v[0].0.abs();
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}
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