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Fix miri error in into_inner() of CString
Fix #62553
I choice to not transmute because I think it's more unsafe and in case the structure change this code should always work.
r? @RalfJung
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Clone for it.
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Fix intra-doc link resolution failure on re-exporting libstd
Currently, re-exporting libstd items as below will [occur a lot of failures](https://gist.github.com/taiki-e/e33e0e8631ef47f65a74a3b69f456366).
```rust
pub use std::*;
```
Until the underlying issue (#56922) fixed, we can fix that so they don't propagate to downstream crates.
Related: https://github.com/rust-lang/rust/pull/56941 (That PR fixed failures that occur when re-exporting from libcore to libstd.)
r? @QuietMisdreavus
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Use more impl header lifetime elision
Inspired by seeing explicit lifetimes on these two:
- https://doc.rust-lang.org/nightly/std/slice/struct.Iter.html#impl-FusedIterator
- https://doc.rust-lang.org/nightly/std/primitive.u32.html#impl-Not
And a follow-up to https://github.com/rust-lang/rust/pull/54687, that started using IHLE in libcore.
Most of the changes in here fall into two big categories:
- Removing lifetimes from common traits that can essentially never user a lifetime from an input (particularly `Drop`, `Debug`, and `Clone`)
- Forwarding impls that are only possible because the lifetime doesn't matter (like `impl<R: Read + ?Sized> Read for &mut R`)
I omitted things that seemed like they could be more controversial, like the handful of iterators that have a `Item: 'static` despite the iterator having a lifetime or the `PartialEq` implementations [where the flipped one cannot elide the lifetime](https://internals.rust-lang.org/t/impl-type-parameter-aliases/9403/2?u=scottmcm).
I also removed two lifetimes that turned out to be completely unused; see https://github.com/rust-lang/rust/issues/41960#issuecomment-464557423
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There are two big categories of changes in here
- Removing lifetimes from common traits that can essentially never user a lifetime from an input (particularly `Drop` & `Debug`)
- Forwarding impls that are only possible because the lifetime doesn't matter (like `impl<R: Read + ?Sized> Read for &mut R`)
I omitted things that seemed like they could be more controversial, like the handful of iterators that have a `Item: 'static` despite the iterator having a lifetime or the `PartialEq` implementations where the flipped one cannot elide the lifetime.
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Fixes #57306
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Add missing urls in ffi module docs
r? @QuietMisdreavus
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Bump to 1.33.0
* Update bootstrap compiler
* Update version to 1.33.0
* Remove some `#[cfg(stage0)]` annotations
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* Update bootstrap compiler
* Update version to 1.33.0
* Remove some `#[cfg(stage0)]` annotations
Actually updating the version number is blocked on updating Cargo
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Update issue number of `shrink_to` methods to point the tracking issue
Tracking issue: #56431
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[std] Osstr len clarity
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libcore: Add VaList and variadic arg handling intrinsics
## Summary
- Add intrinsics for `va_start`, `va_end`, `va_copy`, and `va_arg`.
- Add `core::va_list::VaList` to `libcore`.
Part 1 of (at least) 3 for #44930
Comments and critiques are very much welcomed 😄
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- Add the llvm intrinsics used to manipulate a va_list.
- Add the va_list lang item in order to allow implementing
VaList in libcore.
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Helps users to understand capacity related values, which may surpise on
Windows.
Also is a step towards clarifying understanding of `OsStr`'s len() return
value.
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Minor standard library constification
This PR makes some bits of the standard library into `const fn`s.
I've tried to be as aggressive as I possibly could in the constification.
The list is rather small due to how restrictive `const fn` is at the moment.
r? @oli-obk cc @rust-lang/libs
Stable public APIs affected:
+ [x] `Cell::as_ptr`
+ [x] `UnsafeCell::get`
+ [x] `char::is_ascii`
+ [x] `iter::empty`
+ [x] `ManuallyDrop::{new, into_inner}`
+ [x] `RangeInclusive::{start, end}`
+ [x] `NonNull::as_ptr`
+ [x] `{[T], str}::as_ptr`
+ [x] `Duration::{as_secs, subsec_millis, subsec_micros, subsec_nanos}`
+ [x] `CStr::as_ptr`
+ [x] `Ipv4Addr::is_unspecified`
+ [x] `Ipv6Addr::new`
+ [x] `Ipv6Addr::octets`
Unstable public APIs affected:
+ [x] `Duration::{as_millis, as_micros, as_nanos, as_float_secs}`
+ [x] `Wrapping::{count_ones, count_zeros, trailing_zeros, rotate_left, rotate_right, swap_bytes, reverse_bits, from_be, from_le, to_be, to_le, leading_zeros, is_positive, is_negative, leading_zeros}`
+ [x] `core::convert::identity`
--------------------------
## Removed from list in first pass:
Stable public APIs affected:
+ [ ] `BTree{Map, Set}::{len, is_empty}`
+ [ ] `VecDeque::is_empty`
+ [ ] `String::{is_empty, len}`
+ [ ] `FromUtf8Error::utf8_error`
+ [ ] `Vec<T>::{is_empty, len}`
+ [ ] `Layout::size`
+ [ ] `DecodeUtf16Error::unpaired_surrogate`
+ [ ] `core::fmt::{fill, width, precision, sign_plus, sign_minus, alternate, sign_aware_zero_pad}`
+ [ ] `panic::Location::{file, line, column}`
+ [ ] `{ChunksExact, RChunksExact}::remainder`
+ [ ] `Utf8Error::valid_up_to`
+ [ ] `VacantEntry::key`
+ [ ] `NulError::nul_position`
+ [ ] `IntoStringError::utf8_error`
+ [ ] `IntoInnerError::error`
+ [ ] `io::Chain::get_ref`
+ [ ] `io::Take::{limit, get_ref}`
+ [ ] `SocketAddrV6::{flowinfo, scope_id}`
+ [ ] `PrefixComponent::{kind, as_os_str}`
+ [ ] `Path::{ancestors, display}`
+ [ ] `WaitTimeoutResult::timed_out`
+ [ ] `Receiver::{iter, try_iter}`
+ [ ] `thread::JoinHandle::thread`
+ [ ] `SystemTimeError::duration`
Unstable public APIs affected:
+ [ ] `core::fmt::Arguments::new_v1`
+ [ ] `core::fmt::Arguments::new_v1_formatted`
+ [ ] `Pin::{get_ref, into_ref}`
+ [ ] `Utf8Lossy::chunks`
+ [ ] `LocalWaker::as_waker`
+ [ ] `panic::PanicInfo::{internal_constructor, message, location}`
+ [ ] `panic::Location::{internal_constructor }`
## Removed from list in 2nd pass:
Stable public APIs affected:
+ [ ] `LinkedList::{new, iter, is_empty, len}`
+ [ ] `mem::forget`
+ [ ] `Cursor::{new, get_ref, position}`
+ [ ] `io::{empty, repeat, sink}`
+ [ ] `PoisonError::new`
+ [ ] `thread::Builder::new`
+ [ ] `process::Stdio::{piped, inherit, null}`
Unstable public APIs affected:
+ [ ] `io::Initializer::{zeroing, should_initialize}`
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closes #54678
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I somehow got confused into thinking this was the case, but
it's definitely not. Let's help the common case of people who
have an `OsStr` and need to call e.g. Unix APIs.
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Fix the stable release of os_str_str_ref_eq
This was added and stabilized in commit 02503029b83a, but while that
claimed to be for 1.28.0, it didn't actually make it until 1.29.0.
Fixes #54195.
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This was added and stabilized in commit 02503029b83a, but while that
claimed to be for 1.28.0, it didn't actually make it until 1.29.0.
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Replace unwrap calls in example by expect
Part of #51668.
r? @steveklabnik
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There are a few places where we mention the replacement character in the
docs, and it could be helpful for users to utilize the constant which is
available in the standard library, so let’s link to it!
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Document From trait implementations for OsStr, OsString, CString, and CStr
As part of issue #51430 (cc @skade).
The allocation and copy claims should be double-checked.
r? @steveklabnik
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