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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/tools/clippy/tests/ui/vec_init_then_push.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/tools/clippy/tests/ui/vec_init_then_push.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/vec_init_then_push.rs | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/vec_init_then_push.rs b/src/tools/clippy/tests/ui/vec_init_then_push.rs new file mode 100644 index 000000000..8dd098a5b --- /dev/null +++ b/src/tools/clippy/tests/ui/vec_init_then_push.rs @@ -0,0 +1,112 @@ +#![allow(unused_variables)] +#![warn(clippy::vec_init_then_push)] + +fn main() { + let mut def_err: Vec<u32> = Default::default(); + def_err.push(0); + + let mut new_err = Vec::<u32>::new(); + new_err.push(1); + + let mut cap_err = Vec::with_capacity(2); + cap_err.push(0); + cap_err.push(1); + cap_err.push(2); + if true { + // don't include this one + cap_err.push(3); + } + + let mut cap_ok = Vec::with_capacity(10); + cap_ok.push(0); + + new_err = Vec::new(); + new_err.push(0); + + let mut vec = Vec::new(); + // control flow at block final expression + if true { + // no lint + vec.push(1); + } + + let mut vec = Vec::with_capacity(5); + vec.push(1); + vec.push(2); + vec.push(3); + vec.push(4); +} + +pub fn no_lint() -> Vec<i32> { + let mut p = Some(1); + let mut vec = Vec::new(); + loop { + match p { + None => return vec, + Some(i) => { + vec.push(i); + p = None; + }, + } + } +} + +fn _from_iter(items: impl Iterator<Item = u32>) -> Vec<u32> { + let mut v = Vec::new(); + v.push(0); + v.push(1); + v.extend(items); + v +} + +fn _cond_push(x: bool) -> Vec<u32> { + let mut v = Vec::new(); + v.push(0); + if x { + v.push(1); + } + v.push(2); + v +} + +fn _push_then_edit(x: u32) -> Vec<u32> { + let mut v = Vec::new(); + v.push(x); + v.push(1); + v[0] = v[1] + 5; + v +} + +fn _cond_push_with_large_start(x: bool) -> Vec<u32> { + let mut v = Vec::new(); + v.push(0); + v.push(1); + v.push(0); + v.push(1); + v.push(0); + v.push(0); + v.push(1); + v.push(0); + if x { + v.push(1); + } + + let mut v2 = Vec::new(); + v2.push(0); + v2.push(1); + v2.push(0); + v2.push(1); + v2.push(0); + v2.push(0); + v2.push(1); + v2.push(0); + v2.extend(&v); + + v2 +} + +fn f() { + let mut v = Vec::new(); + v.push((0i32, 0i32)); + let y = v[0].0.abs(); +} |