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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_reference.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/mut_reference.rs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/mut_reference.rs b/src/tools/clippy/tests/ui/mut_reference.rs new file mode 100644 index 000000000..73906121c --- /dev/null +++ b/src/tools/clippy/tests/ui/mut_reference.rs @@ -0,0 +1,43 @@ +#![allow(unused_variables)] + +fn takes_an_immutable_reference(a: &i32) {} +fn takes_a_mutable_reference(a: &mut i32) {} + +struct MyStruct; + +impl MyStruct { + fn takes_an_immutable_reference(&self, a: &i32) {} + + fn takes_a_mutable_reference(&self, a: &mut i32) {} +} + +#[warn(clippy::unnecessary_mut_passed)] +fn main() { + // Functions + takes_an_immutable_reference(&mut 42); + let as_ptr: fn(&i32) = takes_an_immutable_reference; + as_ptr(&mut 42); + + // Methods + let my_struct = MyStruct; + my_struct.takes_an_immutable_reference(&mut 42); + + // No error + + // Functions + takes_an_immutable_reference(&42); + let as_ptr: fn(&i32) = takes_an_immutable_reference; + as_ptr(&42); + + takes_a_mutable_reference(&mut 42); + let as_ptr: fn(&mut i32) = takes_a_mutable_reference; + as_ptr(&mut 42); + + let a = &mut 42; + takes_an_immutable_reference(a); + + // Methods + my_struct.takes_an_immutable_reference(&42); + my_struct.takes_a_mutable_reference(&mut 42); + my_struct.takes_an_immutable_reference(a); +} |