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@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
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rustbot commented Mar 26, 2024

r? @Amanieu

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@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()),
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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);
    | 

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Thanks!

@bors r+ rollup=always

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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
@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
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5 participants