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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/deref_by_slicing.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 '')
-rw-r--r-- | src/tools/clippy/tests/ui/deref_by_slicing.rs | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/deref_by_slicing.rs b/src/tools/clippy/tests/ui/deref_by_slicing.rs new file mode 100644 index 000000000..e288046f9 --- /dev/null +++ b/src/tools/clippy/tests/ui/deref_by_slicing.rs @@ -0,0 +1,30 @@ +// run-rustfix + +#![warn(clippy::deref_by_slicing)] +#![allow(clippy::borrow_deref_ref)] + +use std::io::Read; + +fn main() { + let mut vec = vec![0]; + let _ = &vec[..]; + let _ = &mut vec[..]; + + let ref_vec = &mut vec; + let _ = &ref_vec[..]; + let mut_slice = &mut ref_vec[..]; + let _ = &mut mut_slice[..]; // Err, re-borrows slice + + let s = String::new(); + let _ = &s[..]; + + static S: &[u8] = &[0, 1, 2]; + let _ = &mut &S[..]; // Err, re-borrows slice + + let slice: &[u32] = &[0u32, 1u32]; + let slice_ref = &slice; + let _ = &slice_ref[..]; // Err, derefs slice + + let bytes: &[u8] = &[]; + let _ = (&bytes[..]).read_to_end(&mut vec![]).unwrap(); // Err, re-borrows slice +} |