1.70.0 release notes

Author: Mark-Simulacrum

RELEASES.md

@@ -1,3 +1,139 @@
+Version 1.70.0 (2023-06-01)
+==========================
+
+<a id="1.70.0-Language"></a>
+
+Language
+--------
+- [Relax ordering rules for `asm!` operands](https://github.com/rust-lang/rust/pull/105798/)
+- [Properly allow macro expanded `format_args` invocations to uses captures](https://github.com/rust-lang/rust/pull/106505/)
+- [Lint ambiguous glob re-exports](https://github.com/rust-lang/rust/pull/107880/)
+- [Perform const and unsafe checking for expressions in `let _ = expr` position.](https://github.com/rust-lang/rust/pull/102256/)
+
+<a id="1.70.0-Compiler"></a>
+
+Compiler
+--------
+- [Extend -Cdebuginfo with new options and named aliases](https://github.com/rust-lang/rust/pull/109808/)
+  This provides a smaller version of debuginfo for cases that only need line number information
+  (`-Cdebuginfo=line-tables-only`), which may eventually become the default for `-Cdebuginfo=1`.
+- [Make `unused_allocation` lint against `Box::new` too](https://github.com/rust-lang/rust/pull/104363/)
+- [Detect uninhabited types early in const eval](https://github.com/rust-lang/rust/pull/109435/)
+- [Switch to LLD as default linker for {arm,thumb}v4t-none-eabi](https://github.com/rust-lang/rust/pull/109721/)
+- [Add tier 3 target `loongarch64-unknown-linux-gnu`](https://github.com/rust-lang/rust/pull/96971)
+- [Add tier 3 target for `i586-pc-nto-qnx700` (QNX Neutrino RTOS, version 7.0)](https://github.com/rust-lang/rust/pull/109173/), 
+- [Insert alignment checks for pointer dereferences as debug assertions](https://github.com/rust-lang/rust/pull/98112)
+  This catches undefined behavior at runtime, and may cause existing code to fail.
+
+Refer to Rust's [platform support page][platform-support-doc]
+for more information on Rust's tiered platform support.
+
+<a id="1.70.0-Libraries"></a>
+
+Libraries
+---------
+- [Document NonZeroXxx layout guarantees](https://github.com/rust-lang/rust/pull/94786/)
+- [Windows: make `Command` prefer non-verbatim paths](https://github.com/rust-lang/rust/pull/96391/)
+- [Implement Default for some alloc/core iterators](https://github.com/rust-lang/rust/pull/99929/)
+- [Fix handling of trailing bare CR in str::lines](https://github.com/rust-lang/rust/pull/100311/)
+- [allow negative numeric literals in `concat!`](https://github.com/rust-lang/rust/pull/106844/)
+- [Add documentation about the memory layout of `Cell`](https://github.com/rust-lang/rust/pull/106921/)
+- [Use `partial_cmp` to implement tuple `lt`/`le`/`ge`/`gt`](https://github.com/rust-lang/rust/pull/108157/)
+- [Stabilize `atomic_as_ptr`](https://github.com/rust-lang/rust/pull/108419/)
+- [Stabilize `nonnull_slice_from_raw_parts`](https://github.com/rust-lang/rust/pull/97506/)
+- [Partial stabilization of `once_cell`](https://github.com/rust-lang/rust/pull/105587/)
+- [Stabilize `nonzero_min_max`](https://github.com/rust-lang/rust/pull/106633/)
+- [Flatten/inline format_args!() and (string and int) literal arguments into format_args!()](https://github.com/rust-lang/rust/pull/106824/)
+- [Stabilize movbe target feature](https://github.com/rust-lang/rust/pull/107711/)
+- [don't splice from files into pipes in io::copy](https://github.com/rust-lang/rust/pull/108283/)
+- [Add a builtin unstable `FnPtr` trait that is implemented for all function pointers](https://github.com/rust-lang/rust/pull/108080/)
+  This extends `Debug`, `Pointer`, `Hash`, `PartialEq`, `Eq`, `PartialOrd`, and `Ord`
+  implementations for function pointers with all ABIs.
+
+<a id="1.70.0-Stabilized-APIs"></a>
+
+Stabilized APIs
+---------------
+
+- [`NonZero*::MIN/MAX`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroI8.html#associatedconstant.MIN)
+- [`BinaryHeap::retain`](https://doc.rust-lang.org/stable/std/collections/struct.BinaryHeap.html#method.retain)
+- [`Default for std::collections::binary_heap::IntoIter`](https://doc.rust-lang.org/stable/std/collections/binary_heap/struct.IntoIter.html)
+- [`Default for std::collections::btree_map::{IntoIter, Iter, IterMut}`](https://doc.rust-lang.org/stable/std/collections/btree_map/struct.IntoIter.html)
+- [`Default for std::collections::btree_map::{IntoKeys, Keys}`](https://doc.rust-lang.org/stable/std/collections/btree_map/struct.IntoKeys.html)
+- [`Default for std::collections::btree_map::{IntoValues, Values}`](https://doc.rust-lang.org/stable/std/collections/btree_map/struct.IntoKeys.html)
+- [`Default for std::collections::btree_map::Range`](https://doc.rust-lang.org/stable/std/collections/btree_map/struct.Range.html)
+- [`Default for std::collections::btree_set::{IntoIter, Iter}`](https://doc.rust-lang.org/stable/std/collections/btree_set/struct.IntoIter.html)
+- [`Default for std::collections::btree_set::Range`](https://doc.rust-lang.org/stable/std/collections/btree_set/struct.Range.html)
+- [`Default for std::collections::linked_list::{IntoIter, Iter, IterMut}`](https://doc.rust-lang.org/stable/alloc/collections/linked_list/struct.IntoIter.html)
+- [`Default for std::vec::IntoIter`](https://doc.rust-lang.org/stable/alloc/vec/struct.IntoIter.html#impl-Default-for-IntoIter%3CT,+A%3E)
+- [`Default for std::iter::Chain`](https://doc.rust-lang.org/stable/std/iter/struct.Chain.html)
+- [`Default for std::iter::Cloned`](https://doc.rust-lang.org/stable/std/iter/struct.Cloned.html)
+- [`Default for std::iter::Copied`](https://doc.rust-lang.org/stable/std/iter/struct.Copied.html)
+- [`Default for std::iter::Enumerate`](https://doc.rust-lang.org/stable/std/iter/struct.Enumerate.html)
+- [`Default for std::iter::Flatten`](https://doc.rust-lang.org/stable/std/iter/struct.Flatten.html)
+- [`Default for std::iter::Fuse`](https://doc.rust-lang.org/stable/std/iter/struct.Fuse.html)
+- [`Default for std::iter::Rev`](https://doc.rust-lang.org/stable/std/iter/struct.Rev.html)
+- [`Default for std::slice::Iter`](https://doc.rust-lang.org/stable/std/slice/struct.Iter.html)
+- [`Default for std::slice::IterMut`](https://doc.rust-lang.org/stable/std/slice/struct.IterMut.html)
+- [`Rc::into_inner`](https://doc.rust-lang.org/stable/alloc/rc/struct.Rc.html#method.into_inner)
+- [`Arc::into_inner`](https://doc.rust-lang.org/stable/alloc/sync/struct.Arc.html#method.into_inner)
+- [`std::cell::OnceCell`](https://doc.rust-lang.org/stable/std/cell/struct.OnceCell.html)
+- [`Option::is_some_and`](https://doc.rust-lang.org/stable/std/option/enum.Option.html#method.is_some_and)
+- [`NonNull::slice_from_raw_parts`](https://doc.rust-lang.org/stable/std/ptr/struct.NonNull.html#method.slice_from_raw_parts)
+- [`Result::is_ok_and`](https://doc.rust-lang.org/stable/std/result/enum.Result.html#method.is_ok_and)
+- [`Result::is_err_and`](https://doc.rust-lang.org/stable/std/result/enum.Result.html#method.is_err_and)
+- [`std::sync::atomic::Atomic*::as_ptr`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicU8.html#method.as_ptr)
+- [`std::io::IsTerminal`](https://doc.rust-lang.org/stable/std/io/trait.IsTerminal.html)
+- [`std::os::linux::net::SocketAddrExt`](https://doc.rust-lang.org/stable/std/os/linux/net/trait.SocketAddrExt.html)
+- [`std::os::unix::net::UnixDatagram::bind_addr`](https://doc.rust-lang.org/stable/std/os/unix/net/struct.UnixDatagram.html#method.bind_addr)
+- [`std::os::unix::net::UnixDatagram::connect_addr`](https://doc.rust-lang.org/stable/std/os/unix/net/struct.UnixDatagram.html#method.connect_addr)
+- [`std::os::unix::net::UnixDatagram::send_to_addr`](https://doc.rust-lang.org/stable/std/os/unix/net/struct.UnixDatagram.html#method.send_to_addr)
+- [`std::os::unix::net::UnixListener::bind_addr`](https://doc.rust-lang.org/stable/std/os/unix/net/struct.UnixListener.html#method.bind_addr)
+- [`std::path::Path::as_mut_os_str`](https://doc.rust-lang.org/stable/std/path/struct.Path.html#method.as_mut_os_str)
+- [`std::sync::OnceLock`](https://doc.rust-lang.org/stable/std/sync/struct.OnceLock.html)
+
+<a id="1.70.0-Cargo"></a>
+
+Cargo
+-----
+
+- [Add `CARGO_PKG_README`](https://github.com/rust-lang/cargo/pull/11645/)
+- [Make `sparse` the default protocol for crates.io](https://github.com/rust-lang/cargo/pull/11791/)
+- [Accurately show status when downgrading dependencies](https://github.com/rust-lang/cargo/pull/11839/)
+- [Use registry.default for login/logout](https://github.com/rust-lang/cargo/pull/11949/)
+- [Stabilize `cargo logout`](https://github.com/rust-lang/cargo/pull/11950/)
+
+<a id="1.70.0-Misc"></a>
+
+Misc
+----
+
+- [Stabilize rustdoc `--test-run-directory`](https://github.com/rust-lang/rust/pull/103682/)
+
+<a id="1.70.0-Compatibility-Notes"></a>
+
+Compatibility Notes
+-------------------
+
+- [Prevent stable `libtest` from supporting `-Zunstable-options`](https://github.com/rust-lang/rust/pull/109044/)
+- [Perform const and unsafe checking for expressions in `let _ = expr` position.](https://github.com/rust-lang/rust/pull/102256/)
+- [WebAssembly targets enable `sign-ext` and `mutable-globals` features in codegen](https://github.com/rust-lang/rust/issues/109807)
+  This may cause incompatibility with older execution environments.
+- [Insert alignment checks for pointer dereferences as debug assertions](https://github.com/rust-lang/rust/pull/98112)
+  This catches undefined behavior at runtime, and may cause existing code to fail.
+
+<a id="1.70.0-Internal-Changes"></a>
+
+Internal Changes
+----------------
+
+These changes do not affect any public interfaces of Rust, but they represent
+significant improvements to the performance or internals of rustc and related
+tools.
+
+- [Upgrade to LLVM 16](https://github.com/rust-lang/rust/pull/109474/)
+- [Use SipHash-1-3 instead of SipHash-2-4 for StableHasher](https://github.com/rust-lang/rust/pull/107925/)
+
 Version 1.69.0 (2023-04-20)
 ==========================