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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:03:36 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:03:36 +0000 |
commit | 17d40c6057c88f4c432b0d7bac88e1b84cb7e67f (patch) | |
tree | 3f66c4a5918660bb8a758ab6cda5ff8ee4f6cdcd /src/tools/clippy/src/docs/redundant_clone.txt | |
parent | Adding upstream version 1.64.0+dfsg1. (diff) | |
download | rustc-17d40c6057c88f4c432b0d7bac88e1b84cb7e67f.tar.xz rustc-17d40c6057c88f4c432b0d7bac88e1b84cb7e67f.zip |
Adding upstream version 1.65.0+dfsg1.upstream/1.65.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/src/docs/redundant_clone.txt | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/tools/clippy/src/docs/redundant_clone.txt b/src/tools/clippy/src/docs/redundant_clone.txt new file mode 100644 index 000000000..b29aed0b5 --- /dev/null +++ b/src/tools/clippy/src/docs/redundant_clone.txt @@ -0,0 +1,23 @@ +### What it does +Checks for a redundant `clone()` (and its relatives) which clones an owned +value that is going to be dropped without further use. + +### Why is this bad? +It is not always possible for the compiler to eliminate useless +allocations and deallocations generated by redundant `clone()`s. + +### Known problems +False-negatives: analysis performed by this lint is conservative and limited. + +### Example +``` +{ + let x = Foo::new(); + call(x.clone()); + call(x.clone()); // this can just pass `x` +} + +["lorem", "ipsum"].join(" ").to_string(); + +Path::new("/a/b").join("c").to_path_buf(); +```
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