Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

lib: fix some unnecessary_cast clippy lint #123083

Merged
merged 1 commit into from
Mar 27, 2024
Merged

Conversation

klensy
Copy link
Contributor

@klensy klensy commented Mar 26, 2024

Fixes few instances of unnecessary_cast clippy lint

warning: casting raw pointers to the same type and constness is unnecessary (`*mut V` -> `*mut V`)
   --> library\alloc\src\collections\btree\map\entry.rs:357:31
    |
357 |                 let val_ptr = root.borrow_mut().push(self.key, value) as *mut V;
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `root.borrow_mut().push
(self.key, value)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`usize` -> `usize`)
   --> library\alloc\src\ffi\c_str.rs:411:56
    |
411 |             let slice = slice::from_raw_parts_mut(ptr, len as usize);
    |                                                        ^^^^^^^^^^^^ help: try: `len`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting raw pointers to the same type and constness is unnecessary (`*mut T` -> `*mut T`)
   --> library\alloc\src\slice.rs:516:25
    |
516 |                         (buf.as_mut_ptr() as *mut T).add(buf.len()),
    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `buf.as_mut_ptr()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting raw pointers to the same type and constness is unnecessary (`*mut T` -> `*mut T`)
   --> library\alloc\src\slice.rs:537:21
    |
537 |                     (buf.as_mut_ptr() as *mut T).add(buf.len()),
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `buf.as_mut_ptr()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting raw pointers to the same type and constness is unnecessary (`*const ()` -> `*const ()`)
   --> library\alloc\src\task.rs:151:13
    |
151 |             waker as *const (),
    |             ^^^^^^^^^^^^^^^^^^ help: try: `waker`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting raw pointers to the same type and constness is unnecessary (`*const ()` -> `*const ()`)
   --> library\alloc\src\task.rs:323:13
    |
323 |             waker as *const (),
    |             ^^^^^^^^^^^^^^^^^^ help: try: `waker`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`usize` -> `usize`)
   --> library\std\src\sys_common\net.rs:110:21
    |
110 |             assert!(len as usize >= mem::size_of::<c::sockaddr_in>());
    |                     ^^^^^^^^^^^^ help: try: `len`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`usize` -> `usize`)
   --> library\std\src\sys_common\net.rs:116:21
    |
116 |             assert!(len as usize >= mem::size_of::<c::sockaddr_in6>());
    |                     ^^^^^^^^^^^^ help: try: `len`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
@rustbot
Copy link
Collaborator

rustbot commented Mar 26, 2024

r? @Amanieu

rustbot has assigned @Amanieu.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Mar 26, 2024
Comment on lines -514 to +516
ptr::copy_nonoverlapping(
ptr::copy_nonoverlapping::<T>(
buf.as_ptr(),
(buf.as_mut_ptr() as *mut T).add(buf.len()),
(buf.as_mut_ptr()).add(buf.len()),
Copy link
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Turbofish required here, otherwise

error[E0699]: cannot call a method on a raw pointer with an unknown pointee type
   --> library\alloc\src\slice.rs:516:44
    |
516 |                         (buf.as_mut_ptr()).add(buf.len()),
    |                                            ^^^

error[E0699]: cannot call a method on a raw pointer with an unknown pointee type
   --> library\alloc\src\slice.rs:535:75
    |
535 |                 ptr::copy_nonoverlapping(buf.as_ptr(), (buf.as_mut_ptr()).add(buf.len()), rem_len);
    | 

@workingjubilee
Copy link
Member

Thanks!

@bors r+ rollup=always

@bors
Copy link
Contributor

bors commented Mar 26, 2024

📌 Commit 8560d01 has been approved by workingjubilee

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Mar 26, 2024
bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 27, 2024
…llaumeGomez

Rollup of 6 pull requests

Successful merges:

 - rust-lang#121843 (Implement `-L KIND=`@RUSTC_BUILTIN/...`)`
 - rust-lang#122860 (coverage: Re-enable `UnreachablePropagation` for coverage builds)
 - rust-lang#123021 (Make `TyCtxt::coroutine_layout` take coroutine's kind parameter)
 - rust-lang#123024 (CFI: Enable KCFI testing of run-pass tests)
 - rust-lang#123083 (lib: fix some unnecessary_cast clippy lint)
 - rust-lang#123116 (rustdoc: Swap fields and variant documentations)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 64a9360 into rust-lang:master Mar 27, 2024
11 checks passed
@rustbot rustbot added this to the 1.79.0 milestone Mar 27, 2024
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Mar 27, 2024
Rollup merge of rust-lang#123083 - klensy:clippy-me, r=workingjubilee

lib: fix some unnecessary_cast clippy lint

Fixes few instances of `unnecessary_cast` clippy lint
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-libs Relevant to the library team, which will review and decide on the PR/issue.
Projects
None yet
Development

Successfully merging this pull request may close these issues.

5 participants