Commit Graph

11 Commits

Author SHA1 Message Date
zachs18
e1baf85f09
Fix box_bytes_zst test (#260) 2024-07-30 21:59:13 -06:00
zachs18
291a924518
Allow casting between slices of ZSTs and slices of non-ZSTs in all cases. (#256)
Casting ZST to non-ZST will result in a slice length of 0.
Casting non-ZST to ZST will only work if the input slice has length 0, and results in a slice length of 0; if the input slice is not of length 0, PodCastError::OutputSliceWouldHaveSlop is returned.

Updates the docs of the PodCastError variants to reflect when they can occur.
Updates the docs of try_cast_slice (and checked::) to remove note about ZST <-> non-ZST not being allowed.
Update bytes_of(_mut) to remove ZST check, since casting [ZST] -> [u8] is now allowed directly using cast_slice(_mut).
Update must_cast_slice checks and doctests to allow [ZST] -> [non-ZST], but disallow [non-ZST] -> [ZST].
2024-07-30 17:05:11 -06:00
zachs18
1c75146bb6
Fix UB when dropping BoxBytes owning a zero-sized layout (#258) 2024-07-30 16:23:38 -06:00
zachs18
005ee3254f
Fix panics in try_cast_slice_box etc (#254)
* Fix panics in try_cast_slice_{box,rc,arc},cast_vec.

Casting from non-empty non-ZST slices to ZST slices now returns Err(SizeMismatch) (instead of panicking).
Casting from empty non-ZST slices to ZST slices is allowed and returns an empty slice (instead of panicking).
Casting from ZST slices to non-ZST slices is allowed and returns an empty slice (status quo).

* Add tests for cast_slice_box,rc,arc.
2024-07-21 10:24:43 -06:00
Lokathor
16610417be tell clippy to quiet down 2023-09-05 13:26:08 -06:00
Lokathor
1b1b9a0e89
Fix 177 (#178)
* reduce required bounds.

* clippy get off my case

* spelling

* clippy lints on tests.
2023-02-28 13:29:34 -07:00
Luis Wirth
30a96066fa
[Feature] extend TransparentWrapper conversion functions (#58)
* update rustfmt.toml

replace `merge_imports = true` (deprecated) with `imports_granularity = "Crate"`

* run `cargo +nightly fmt`

* rewrite docs and rename `Wrapped` to `Inner`

rewriting some docs for conciseness

rename `Wrapped` to `Inner`, because it's hard to visually differentiate between
`Wrapper` and `Wrapped`

* impl missing `TransparentWrapper::wrap_{}` fns

Implement 3 new wrapping functions on `TransparentWrapper` providing new
conversions.

- `TransparentWrapper::wrap(s: Inner) -> Self`
- `TransparentWrapper::wrap_slice(s: &[Inner]) -> &[Self]`
- `TransparentWrapper::wrap_slice_mut(s: &mut [Inner]) -> &mut [Self]`

* impl `TransparentWrapper::unwrap_{}` fns

Implement counterparts to `TransparentWrapper::wrap_{}` functions
providing reverse conversions.

- `TransparentWrapper::unwrap(self) -> Inner`
- `TransparentWrapper::unwrap_ref(&self) -> &Inner`
- `TransparentWrapper::unwrap_mut(&mut self) -> &mut Inner`
- `TransparentWrapper::unwrap_slice(s: &[Self]) -> &[Inner]`
- `TransparentWrapper::unwrap_slice_mut(s: &mut [Self]) -> &mut [Inner]`

* add `TransparentWrapper` UB test

This test is only for MIRI to check all trait functions on
`TransparentWrapper` if they cause any UB.
The output of the functions is not checked.

* small `TransparentWrapper` doc adjustments

* change fn signature on `TransparentWrapper`

Methods on `TransparentWrapper` trait are now associated functions.
They now take `Self` instead of `self` as argument)

- `TransparentWrapper::unwrap(s: Self)`
- `TransparentWrapper::unwrap_ref(s: &Self)`
- `TransparentWrapper::unwrap_mut(s: &mut Self)`
2021-03-28 23:11:13 -06:00
Thom Chiovoloni
64cc5973c4
Add more tests, overhaul CI, and fix plug soundness hole in bytemuck::offset_of! (#38)
* Ensure functions that take generic <A, B> don't call them <T, U>

* Plug soundness hole in offset_of with safe_packed_borrows lint

* Add some more tests I noticed were missing (still many missing)

* Make CI way more thorough

* Fix running MSRV tests with unsupported `--feature`s

* Disable derive tests in sanitizers, and fix miri ci
2020-09-06 18:56:41 -06:00
Lokathor
79143a6295 cargo fmt is a strict one 2019-11-03 23:55:51 -07:00
Lokathor
0e3948b8b8
Update cast_slice_tests.rs 2019-11-01 10:39:32 -06:00
Lokathor
b199fad411 Create cast_slice_tests.rs 2019-10-26 04:22:15 -06:00