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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /src/test/ui/lint/noop-method-call.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/lint/noop-method-call.rs')
-rw-r--r-- | src/test/ui/lint/noop-method-call.rs | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/src/test/ui/lint/noop-method-call.rs b/src/test/ui/lint/noop-method-call.rs deleted file mode 100644 index 89b296635..000000000 --- a/src/test/ui/lint/noop-method-call.rs +++ /dev/null @@ -1,55 +0,0 @@ -// check-pass - -#![allow(unused)] -#![warn(noop_method_call)] - -use std::borrow::Borrow; -use std::ops::Deref; - -struct PlainType<T>(T); - -#[derive(Clone)] -struct CloneType<T>(T); - -fn main() { - let non_clone_type_ref = &PlainType(1u32); - let non_clone_type_ref_clone: &PlainType<u32> = non_clone_type_ref.clone(); - //~^ WARNING call to `.clone()` on a reference in this situation does nothing - - let clone_type_ref = &CloneType(1u32); - let clone_type_ref_clone: CloneType<u32> = clone_type_ref.clone(); - - // Calling clone on a double reference doesn't warn since the method call itself - // peels the outer reference off - let clone_type_ref = &&CloneType(1u32); - let clone_type_ref_clone: &CloneType<u32> = clone_type_ref.clone(); - - let non_deref_type = &PlainType(1u32); - let non_deref_type_deref: &PlainType<u32> = non_deref_type.deref(); - //~^ WARNING call to `.deref()` on a reference in this situation does nothing - - // Dereferencing a &&T does not warn since it has collapsed the double reference - let non_deref_type = &&PlainType(1u32); - let non_deref_type_deref: &PlainType<u32> = non_deref_type.deref(); - - let non_borrow_type = &PlainType(1u32); - let non_borrow_type_borrow: &PlainType<u32> = non_borrow_type.borrow(); - //~^ WARNING call to `.borrow()` on a reference in this situation does nothing - - // Borrowing a &&T does not warn since it has collapsed the double reference - let non_borrow_type = &&PlainType(1u32); - let non_borrow_type_borrow: &PlainType<u32> = non_borrow_type.borrow(); - - let xs = ["a", "b", "c"]; - let _v: Vec<&str> = xs.iter().map(|x| x.clone()).collect(); // ok, but could use `*x` instead -} - -fn generic<T>(non_clone_type: &PlainType<T>) { - non_clone_type.clone(); - //~^ WARNING call to `.clone()` on a reference in this situation does nothing -} - -fn non_generic(non_clone_type: &PlainType<u32>) { - non_clone_type.clone(); - //~^ WARNING call to `.clone()` on a reference in this situation does nothing -} |