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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 02:49:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 02:49:50 +0000 |
commit | 9835e2ae736235810b4ea1c162ca5e65c547e770 (patch) | |
tree | 3fcebf40ed70e581d776a8a4c65923e8ec20e026 /tests/ui/lint/suspicious-double-ref-op.rs | |
parent | Releasing progress-linux version 1.70.0+dfsg2-1~progress7.99u1. (diff) | |
download | rustc-9835e2ae736235810b4ea1c162ca5e65c547e770.tar.xz rustc-9835e2ae736235810b4ea1c162ca5e65c547e770.zip |
Merging upstream version 1.71.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/lint/suspicious-double-ref-op.rs')
-rw-r--r-- | tests/ui/lint/suspicious-double-ref-op.rs | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tests/ui/lint/suspicious-double-ref-op.rs b/tests/ui/lint/suspicious-double-ref-op.rs new file mode 100644 index 000000000..b9bcd31c2 --- /dev/null +++ b/tests/ui/lint/suspicious-double-ref-op.rs @@ -0,0 +1,30 @@ +#![feature(lazy_cell)] +#![deny(suspicious_double_ref_op, noop_method_call)] + +pub fn clone_on_double_ref() { + let x = vec![1]; + let y = &&x; + let z: &Vec<_> = y.clone(); + //~^ ERROR using `.clone()` on a double reference, which returns `&Vec<i32>` + + println!("{:p} {:p}", *y, z); +} + +use std::sync::LazyLock; + +pub static STRS: LazyLock<&str> = LazyLock::new(|| "First"); + +// https://github.com/rust-lang/rust-clippy/issues/9272 +fn rust_clippy_issue_9272() { + let str = STRS.clone(); + println!("{str}") +} + +fn check(mut encoded: &[u8]) { + let _ = &mut encoded.clone(); + //~^ ERROR call to `.clone()` on a reference in this situation does nothing + let _ = &encoded.clone(); + //~^ ERROR call to `.clone()` on a reference in this situation does nothing +} + +fn main() {} |