rust/library/std/src/ffi, branch 1.71.0

remove some unneeded imports

2023-04-12T17:27:18+00:00

Guarantee `try_reserve` preserves the contents on error

2022-08-09T16:51:38+00:00

Update doc comments to make the guarantee explicit. However, some implementations does not have the statement though. * `HashMap`, `HashSet`: require guarantees on hashbrown side. * `PathBuf`: simply redirecting to `OsString`. Fixes #99606.

Rollup merge of #97915 - tbu-:pr_os_string_fmt_write, r=joshtriplett

2022-07-17T04:08:48+00:00

Implement `fmt::Write` for `OsString` This allows to format into an `OsString` without unnecessary allocations. E.g. ``` let mut temp_filename = path.into_os_string(); write!(&mut temp_filename, ".tmp.{}", process::id()); ```

Update `since` version to 1.64

2022-07-16T21:36:48+00:00

Stabilize `core::ffi::CStr`, `alloc::ffi::CString`, and friends

2022-07-15T10:10:35+00:00

Stabilize the `core_c_str` and `alloc_c_string` feature gates. Change `std::ffi` to re-export these types rather than creating type aliases, since they now have matching stability.

Rollup merge of #98315 - joshtriplett:stabilize-core-ffi-c, r=Mark-Simulacrum

2022-07-14T08:44:20+00:00

Stabilize `core::ffi:c_*` and rexport in `std::ffi` This only stabilizes the base types, not the non-zero variants, since those have their own separate tracking issue and have not gone through FCP to stabilize.

Stabilize `core::ffi:c_*` and rexport in `std::ffi`

2022-07-14T02:28:20+00:00

This only stabilizes the base types, not the non-zero variants, since those have their own separate tracking issue and have not gone through FCP to stabilize.

Fix documentation for with_capacity and reserve families of methods

2022-06-19T19:46:49+00:00

Documentation for the following methods with_capacity with_capacity_in with_capacity_and_hasher reserve reserve_exact try_reserve try_reserve_exact was inconsistent and often not entirely correct where they existed on the following types Vec VecDeque String OsString PathBuf BinaryHeap HashSet HashMap BufWriter LineWriter since the allocator is allowed to allocate more than the requested capacity in all such cases, and will frequently "allocate" much more in the case of zero-sized types (I also checked BufReader, but there the docs appear to be accurate as it appears to actually allocate the exact capacity). Some effort was made to make the documentation more consistent between types as well. Fix with_capacity* methods for Vec Fix *reserve* methods for Vec Fix docs for *reserve* methods of VecDeque Fix docs for String::with_capacity Fix docs for *reserve* methods of String Fix docs for OsString::with_capacity Fix docs for *reserve* methods on OsString Fix docs for with_capacity* methods on HashSet Fix docs for *reserve methods of HashSet Fix docs for with_capacity* methods of HashMap Fix docs for *reserve methods on HashMap Fix expect messages about OOM in doctests Fix docs for BinaryHeap::with_capacity Fix docs for *reserve* methods of BinaryHeap Fix typos Fix docs for with_capacity on BufWriter and LineWriter Fix consistent use of `hasher` between `HashMap` and `HashSet` Fix warning in doc test Add test for capacity of vec with ZST Fix doc test error

Rollup merge of #95392 - Xuanwo:stablize_try_reserve_2, r=dtolnay

2022-06-17T10:21:46+00:00

std: Stabilize feature try_reserve_2 This PR intends to stabilize feature `try_reserve_2`, closes https://github.com/rust-lang/rust/issues/91789 This PR will also replace the previous PR: https://github.com/rust-lang/rust/pull/95139

std: Stabilize feature try_reserve_2

2022-06-16T01:30:34+00:00

Signed-off-by: Xuanwo