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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/mut_mut.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/mut_mut.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/mut_mut.rs | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/mut_mut.rs b/src/tools/clippy/tests/ui/mut_mut.rs new file mode 100644 index 000000000..be854d941 --- /dev/null +++ b/src/tools/clippy/tests/ui/mut_mut.rs @@ -0,0 +1,59 @@ +// aux-build:macro_rules.rs + +#![allow(unused, clippy::no_effect, clippy::unnecessary_operation)] +#![warn(clippy::mut_mut)] + +#[macro_use] +extern crate macro_rules; + +fn fun(x: &mut &mut u32) -> bool { + **x > 0 +} + +fn less_fun(x: *mut *mut u32) { + let y = x; +} + +macro_rules! mut_ptr { + ($p:expr) => { + &mut $p + }; +} + +#[allow(unused_mut, unused_variables)] +fn main() { + let mut x = &mut &mut 1u32; + { + let mut y = &mut x; + } + + if fun(x) { + let y: &mut &mut u32 = &mut &mut 2; + **y + **x; + } + + if fun(x) { + let y: &mut &mut &mut u32 = &mut &mut &mut 2; + ***y + **x; + } + + let mut z = mut_ptr!(&mut 3u32); +} + +fn issue939() { + let array = [5, 6, 7, 8, 9]; + let mut args = array.iter().skip(2); + for &arg in &mut args { + println!("{}", arg); + } + + let args = &mut args; + for arg in args { + println!(":{}", arg); + } +} + +fn issue6922() { + // do not lint from an external macro + mut_mut!(); +} |