@danielhenrymantilla danielhenrymantilla left a comment

Co-authored-by: Daniel Henry-Mantilla <daniel.henry.mantilla@gmail.com>

This is based on the pkgsrc-wip rust180 package, retaining
the main pkgsrc changes as best as I could.
Pkgsrc changes:
 * Adapt checksums and patches.
 * Make this work again on big-endian aarch64 (at least on NetBSD).
 * Make the choice of GCC = 12 work for sparc64 by testing options
 after options.mk is included (which is required...). Makes this
 work on NetBSD/sparc64 10.0 again.
Upstream chnages:
Version 1.80.1 (2024年08月08日)
===========================
- [Fix miscompilation in the jump threading MIR optimization when
 comparing floats]
 (rust-lang/rust#128271)
- [Revert changes to the `dead_code` lint from 1.80.0]
 (rust-lang/rust#128618)
Version 1.80.0 (2024年07月25日)
==========================
Language
--------
- [Document maximum allocation size]
 (rust-lang/rust#116675)
- [Allow zero-byte offsets and ZST read/writes on arbitrary pointers]
 (rust-lang/rust#117329)
- [Support C23's variadics without a named parameter]
 (rust-lang/rust#124048)
- [Stabilize `exclusive_range_pattern` feature]
 (rust-lang/rust#124459)
- [Guarantee layout and ABI of `Result` in some scenarios]
 (rust-lang/rust#124870)
Compiler
--------
- [Update cc crate to v1.0.97 allowing additional spectre mitigations
 on MSVC targets]
 (rust-lang/rust#124892)
- [Allow field reordering on types marked `repr(packed(1))`]
 (rust-lang/rust#125360)
- [Add a lint against never type fallback affecting unsafe code]
 (rust-lang/rust#123939)
- [Disallow cast with trailing braced macro in let-else]
 (rust-lang/rust#125049)
- [Expand `for_loops_over_fallibles` lint to lint on fallibles
 behind references.]
 (rust-lang/rust#125156)
- [self-contained linker: retry linking without `-fuse-ld=lld` on
 CCs that don't support it]
 (rust-lang/rust#125417)
- [Do not parse CVarArgs (`...`) as a type in trait bounds]
 (rust-lang/rust#125863)
- Improvements to LLDB formatting [#124458]
 (rust-lang/rust#124458) [#124500]
 (rust-lang/rust#124500)
- [For the wasm32-wasip2 target default to PIC and do not use `-fuse-ld=lld`]
 (rust-lang/rust#124858)
- [Add x86_64-unknown-linux-none as a tier 3 target]
 (rust-lang/rust#125023)
- [Lint on `foo.into_iter()` resolving to `&Box<[T]>: IntoIterator`]
 (rust-lang/rust#124097)
Libraries
---------
- [Add `size_of` and `size_of_val` and `align_of` and `align_of_val`
 to the prelude]
 (rust-lang/rust#123168)
- [Abort a process when FD ownership is violated]
 (rust-lang/rust#124210)
- [io::Write::write_fmt: panic if the formatter fails when the
 stream does not fail]
 (rust-lang/rust#125012)
- [Panic if `PathBuf::set_extension` would add a path separator]
 (rust-lang/rust#125070)
- [Add assert_unsafe_precondition to unchecked_{add,sub,neg,mul,shl,shr}
 methods] (rust-lang/rust#121571)
- [Update `c_char` on AIX to use the correct type]
 (rust-lang/rust#122986)
- [`offset_of!` no longer returns a temporary]
 (rust-lang/rust#124484)
- [Handle sigma in `str.to_lowercase` correctly]
 (rust-lang/rust#124773)
- [Raise `DEFAULT_MIN_STACK_SIZE` to at least 64KiB]
 (rust-lang/rust#126059)
Stabilized APIs
---------------
- [`impl Default for Rc<CStr>`]
 (https://doc.rust-lang.org/beta/alloc/rc/struct.Rc.html#impl-Default-for-Rc%3CCStr%3E)
- [`impl Default for Rc<str>`]
 (https://doc.rust-lang.org/beta/alloc/rc/struct.Rc.html#impl-Default-for-Rc%3Cstr%3E)
- [`impl Default for Rc<[T]>`]
 (https://doc.rust-lang.org/beta/alloc/rc/struct.Rc.html#impl-Default-for-Rc%3C%5BT%5D%3E)
- [`impl Default for Arc<str>`]
 (https://doc.rust-lang.org/beta/alloc/sync/struct.Arc.html#impl-Default-for-Arc%3Cstr%3E)
- [`impl Default for Arc<CStr>`]
 (https://doc.rust-lang.org/beta/alloc/sync/struct.Arc.html#impl-Default-for-Arc%3CCStr%3E)
- [`impl Default for Arc<[T]>`]
 (https://doc.rust-lang.org/beta/alloc/sync/struct.Arc.html#impl-Default-for-Arc%3C%5BT%5D%3E)
- [`impl IntoIterator for Box<[T]>`]
 (https://doc.rust-lang.org/beta/alloc/boxed/struct.Box.html#impl-IntoIterator-for-Box%3C%5BI%5D,+A%3E)
- [`impl FromIterator<String> for Box<str>`]
 (https://doc.rust-lang.org/beta/alloc/boxed/struct.Box.html#impl-FromIterator%3CString%3E-for-Box%3Cstr%3E)
- [`impl FromIterator<char> for Box<str>`]
 (https://doc.rust-lang.org/beta/alloc/boxed/struct.Box.html#impl-FromIterator%3Cchar%3E-for-Box%3Cstr%3E)
- [`LazyCell`]
 (https://doc.rust-lang.org/beta/core/cell/struct.LazyCell.html)
- [`LazyLock`]
 (https://doc.rust-lang.org/beta/std/sync/struct.LazyLock.html)
- [`Duration::div_duration_f32`]
 (https://doc.rust-lang.org/beta/std/time/struct.Duration.html#method.div_duration_f32)
- [`Duration::div_duration_f64`]
 (https://doc.rust-lang.org/beta/std/time/struct.Duration.html#method.div_duration_f64)
- [`Option::take_if`]
 (https://doc.rust-lang.org/beta/std/option/enum.Option.html#method.take_if)
- [`Seek::seek_relative`]
 (https://doc.rust-lang.org/beta/std/io/trait.Seek.html#method.seek_relative)
- [`BinaryHeap::as_slice`]
 (https://doc.rust-lang.org/beta/std/collections/struct.BinaryHeap.html#method.as_slice)
- [`NonNull::offset`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.offset)
- [`NonNull::byte_offset`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_offset)
- [`NonNull::add`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.add)
- [`NonNull::byte_add`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_add)
- [`NonNull::sub`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.sub)
- [`NonNull::byte_sub`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_sub)
- [`NonNull::offset_from`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.offset_from)
- [`NonNull::byte_offset_from`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_offset_from)
- [`NonNull::read`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.read)
- [`NonNull::read_volatile`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.read_volatile)
- [`NonNull::read_unaligned`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.read_unaligned)
- [`NonNull::write`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write)
- [`NonNull::write_volatile`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write_volatile)
- [`NonNull::write_unaligned`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write_unaligned)
- [`NonNull::write_bytes`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write_bytes)
- [`NonNull::copy_to`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_to)
- [`NonNull::copy_to_nonoverlapping`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_to_nonoverlapping)
- [`NonNull::copy_from`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_from)
- [`NonNull::copy_from_nonoverlapping`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_from_nonoverlapping)
- [`NonNull::replace`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.replace)
- [`NonNull::swap`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.swap)
- [`NonNull::drop_in_place`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.drop_in_place)
- [`NonNull::align_offset`]
 (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.align_offset)
- [`<[T]>::split_at_checked`]
 (https://doc.rust-lang.org/beta/std/primitive.slice.html#method.split_at_checked)
- [`<[T]>::split_at_mut_checked`]
 (https://doc.rust-lang.org/beta/std/primitive.slice.html#method.split_at_mut_checked)
- [`str::split_at_checked`]
 (https://doc.rust-lang.org/beta/std/primitive.str.html#method.split_at_checked)
- [`str::split_at_mut_checked`]
 (https://doc.rust-lang.org/beta/std/primitive.str.html#method.split_at_mut_checked)
- [`str::trim_ascii`]
 (https://doc.rust-lang.org/beta/std/primitive.str.html#method.trim_ascii)
- [`str::trim_ascii_start`]
 (https://doc.rust-lang.org/beta/std/primitive.str.html#method.trim_ascii_start)
- [`str::trim_ascii_end`]
 (https://doc.rust-lang.org/beta/std/primitive.str.html#method.trim_ascii_end)
- [`<[u8]>::trim_ascii`]
 (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.trim_ascii)
- [`<[u8]>::trim_ascii_start`]
 (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.trim_ascii_start)
- [`<[u8]>::trim_ascii_end`]
 (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.trim_ascii_end)
- [`Ipv4Addr::BITS`]
 (https://doc.rust-lang.org/beta/core/net/struct.Ipv4Addr.html#associatedconstant.BITS)
- [`Ipv4Addr::to_bits`]
 (https://doc.rust-lang.org/beta/core/net/struct.Ipv4Addr.html#method.to_bits)
- [`Ipv4Addr::from_bits`]
 (https://doc.rust-lang.org/beta/core/net/struct.Ipv4Addr.html#method.from_bits)
- [`Ipv6Addr::BITS`]
 (https://doc.rust-lang.org/beta/core/net/struct.Ipv6Addr.html#associatedconstant.BITS)
- [`Ipv6Addr::to_bits`]
 (https://doc.rust-lang.org/beta/core/net/struct.Ipv6Addr.html#method.to_bits)
- [`Ipv6Addr::from_bits`]
 (https://doc.rust-lang.org/beta/core/net/struct.Ipv6Addr.html#method.from_bits)
- [`Vec::<[T; N]>::into_flattened`]
 (https://doc.rust-lang.org/beta/alloc/vec/struct.Vec.html#method.into_flattened)
- [`<[[T; N]]>::as_flattened`]
 (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.as_flattened)
- [`<[[T; N]]>::as_flattened_mut`]
 (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.as_flattened_mut)
These APIs are now stable in const contexts:
- [`<[T]>::last_chunk`]
 (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.last_chunk)
- [`BinaryHeap::new`]
 (https://doc.rust-lang.org/beta/std/collections/struct.BinaryHeap.html#method.new)
Cargo
-----
- [Stabilize `-Zcheck-cfg` as always enabled]
 (rust-lang/cargo#13571)
- [Warn, rather than fail publish, if a target is excluded]
 (rust-lang/cargo#13713)
- [Add special `check-cfg` lint config for the `unexpected_cfgs` lint]
 (rust-lang/cargo#13913)
- [Stabilize `cargo update --precise <yanked>`]
 (rust-lang/cargo#13974)
- [Don't change file permissions on `Cargo.toml` when using `cargo add`]
 (rust-lang/cargo#13898)
- [Support using `cargo fix` on IPv6-only networks]
 (rust-lang/cargo#13907)
Rustdoc
-----
- [Allow searching for references]
 (rust-lang/rust#124148)
- [Stabilize `custom_code_classes_in_docs` feature]
 (rust-lang/rust#124577)
- [fix: In cross-crate scenarios show enum variants on type aliases of enums]
 (rust-lang/rust#125300)
Compatibility Notes
-------------------
- [rustfmt estimates line lengths differently when using non-ascii characters]
 (rust-lang/rustfmt#6203)
- [Type aliases are now handled correctly in orphan check]
 (rust-lang/rust#117164)
- [Allow instructing rustdoc to read from stdin via `-`]
 (rust-lang/rust#124611)
- [`std::env::{set_var, remove_var}` can no longer be converted to
 safe function pointers and no longer implement the `Fn` family of
 traits]
 (rust-lang/rust#124636)
- [Warn (or error) when `Self` constructor from outer item is
 referenced in inner nested item]
 (rust-lang/rust#124187)
- [Turn `indirect_structural_match` and `pointer_structural_match`
 lints into hard errors]
 (rust-lang/rust#124661)
- [Make `where_clause_object_safety` lint a regular object safety violation]
 (rust-lang/rust#125380)
- [Turn `proc_macro_back_compat` lint into a hard error.]
 (rust-lang/rust#125596)
- [Detect unused structs even when implementing private traits]
 (rust-lang/rust#122382)
- [`std::sync::ReentrantLockGuard<T>` is no longer `Sync` if `T: !Sync`]
 (rust-lang/rust#125527) which means
 [`std::io::StdoutLock` and `std::io::StderrLock` are no longer
 Sync] (rust-lang/rust#127340)
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.
- Misc improvements to size of generated html by rustdoc e.g. [#124738]
 (rust-lang/rust#124738) and [#123734]
 (rust-lang/rust#123734)
- [MSVC targets no longer depend on libc]
 (rust-lang/rust#124050)
Version 1.79.0 (2024年06月13日)
==========================
Language
--------
- [Stabilize inline `const {}` expressions.]
 (rust-lang/rust#104087)
- [Prevent opaque types being instantiated twice with different
 regions within the same function.]
 (rust-lang/rust#116935)
- [Stabilize WebAssembly target features that are in phase 4 and 5.]
 (rust-lang/rust#117457)
- [Add the `redundant_lifetimes` lint to detect lifetimes which
 are semantically redundant.]
 (rust-lang/rust#118391)
- [Stabilize the `unnameable_types` lint for public types that can't be named.]
 (rust-lang/rust#120144)
- [Enable debuginfo in macros, and stabilize `-C collapse-macro-debuginfo`
 and `#[collapse_debuginfo]`.]
 (rust-lang/rust#120845)
- [Propagate temporary lifetime extension into `if` and `match` expressions.]
 (rust-lang/rust#121346)
- [Restrict promotion of `const fn` calls.]
 (rust-lang/rust#121557)
- [Warn against refining impls of crate-private traits with
 `refining_impl_trait` lint.]
 (rust-lang/rust#121720)
- [Stabilize associated type bounds (RFC 2289).]
 (rust-lang/rust#122055)
- [Stabilize importing `main` from other modules or crates.]
 (rust-lang/rust#122060)
- [Check return types of function types for well-formedness]
 (rust-lang/rust#115538)
- [Rework `impl Trait` lifetime inference]
 (rust-lang/rust#116891)
- [Change inductive trait solver cycles to be ambiguous]
 (rust-lang/rust#122791)
Compiler
--------
- [Define `-C strip` to only affect binaries, not artifacts like `.pdb`.]
 (rust-lang/rust#115120)
- [Stabilize `-Crelro-level` for controlling runtime link hardening.]
 (rust-lang/rust#121694)
- [Stabilize checking of `cfg` names and values at compile-time
 with `--check-cfg`.]
 (rust-lang/rust#123501)
 *Note that this only stabilizes the compiler part, the Cargo part
 is still unstable in this release.*
- [Add `aarch64-apple-visionos` and `aarch64-apple-visionos-sim`
 tier 3 targets.]
 (rust-lang/rust#121419)
- [Add `riscv32ima-unknown-none-elf` tier 3 target.]
 (rust-lang/rust#122696)
- [Promote several Windows targets to tier 2]
 (rust-lang/rust#121712):
 `aarch64-pc-windows-gnullvm`, `i686-pc-windows-gnullvm`, and
 `x86_64-pc-windows-gnullvm`.
Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.
Libraries
---------
- [Implement `FromIterator` for `(impl Default + Extend, impl
 Default + Extend)`.]
 (rust-lang/rust#107462)
- [Implement `{Div,Rem}Assign<NonZero<X>>` on `X`.]
 (rust-lang/rust#121952)
- [Document overrides of `clone_from()` in core/std.]
 (rust-lang/rust#122201)
- [Link MSVC default lib in core.]
 (rust-lang/rust#122268)
- [Caution against using `transmute` between pointers and integers.]
 (rust-lang/rust#122379)
- [Enable frame pointers for the standard library.]
 (rust-lang/rust#122646)
Stabilized APIs
---------------
- [`{integer}::unchecked_add`]
 (https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_add)
- [`{integer}::unchecked_mul`]
 (https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_mul)
- [`{integer}::unchecked_sub`]
 (https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_sub)
- [`<[T]>::split_at_unchecked`]
 (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_unchecked)
- [`<[T]>::split_at_mut_unchecked`]
 (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_unchecked)
- [`<[u8]>::utf8_chunks`]
 (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.utf8_chunks)
- [`str::Utf8Chunks`]
 (https://doc.rust-lang.org/stable/core/str/struct.Utf8Chunks.html)
- [`str::Utf8Chunk`]
 (https://doc.rust-lang.org/stable/core/str/struct.Utf8Chunk.html)
- [`<*const T>::is_aligned`]
 (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_aligned)
- [`<*mut T>::is_aligned`]
 (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_aligned-1)
- [`NonNull::is_aligned`]
 (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.is_aligned)
- [`<*const [T]>::len`]
 (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.len)
- [`<*mut [T]>::len`]
 (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.len-1)
- [`<*const [T]>::is_empty`]
 (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_empty)
- [`<*mut [T]>::is_empty`]
 (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_empty-1)
- [`NonNull::<[T]>::is_empty`]
 (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.is_empty)
- [`CStr::count_bytes`]
 (https://doc.rust-lang.org/stable/core/ffi/c_str/struct.CStr.html#method.count_bytes)
- [`io::Error::downcast`]
 (https://doc.rust-lang.org/stable/std/io/struct.Error.html#method.downcast)
- [`num::NonZero<T>`]
 (https://doc.rust-lang.org/stable/core/num/struct.NonZero.html)
- [`path::absolute`]
 (https://doc.rust-lang.org/stable/std/path/fn.absolute.html)
- [`proc_macro::Literal::byte_character`]
 (https://doc.rust-lang.org/stable/proc_macro/struct.Literal.html#method.byte_character)
- [`proc_macro::Literal::c_string`]
 (https://doc.rust-lang.org/stable/proc_macro/struct.Literal.html#method.c_string)
These APIs are now stable in const contexts:
- [`Atomic*::into_inner`]
 (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicUsize.html#method.into_inner)
- [`io::Cursor::new`]
 (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.new)
- [`io::Cursor::get_ref`]
 (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.get_ref)
- [`io::Cursor::position`]
 (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.position)
- [`io::empty`]
 (https://doc.rust-lang.org/stable/std/io/fn.empty.html)
- [`io::repeat`]
 (https://doc.rust-lang.org/stable/std/io/fn.repeat.html)
- [`io::sink`]
 (https://doc.rust-lang.org/stable/std/io/fn.sink.html)
- [`panic::Location::caller`]
 (https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.caller)
- [`panic::Location::file`]
 (https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.file)
- [`panic::Location::line`]
 (https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.line)
- [`panic::Location::column`]
 (https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.column)
Cargo
-----
- [Prevent dashes in `lib.name`, always normalizing to `_`.]
 (rust-lang/cargo#12783)
- [Stabilize MSRV-aware version requirement selection in `cargo add`.]
 (rust-lang/cargo#13608)
- [Switch to using `gitoxide` by default for listing files.]
 (rust-lang/cargo#13696)
Rustdoc
-----
- [Always display stability version even if it's the same as the
 containing item.]
 (rust-lang/rust#118441)
- [Show a single search result for items with multiple paths.]
 (rust-lang/rust#119912)
- [Support typing `/` in docs to begin a search.]
 (rust-lang/rust#123355)
Misc
----
Compatibility Notes
-------------------
- [Update the minimum external LLVM to 17.]
 (rust-lang/rust#122649)
- [`RustcEncodable` and `RustcDecodable` are soft-destabilized, to
 be removed from the prelude in next edition.]
 (rust-lang/rust#116016)
- [The `wasm_c_abi` future-incompatibility lint will warn about use of the
 non-spec-compliant C ABI.]
 (rust-lang/rust#117918)
 Use `wasm-bindgen v0.2.88` to generate forward-compatible bindings.
- [Check return types of function types for well-formedness]
 (rust-lang/rust#115538)
Version 1.78.0 (2024年05月02日)
===========================
Language
--------
- [Stabilize `#[cfg(target_abi = ...)]`]
 (rust-lang/rust#119590)
- [Stabilize the `#[diagnostic]` namespace and
 `#[diagnostic::on_unimplemented]` attribute]
 (rust-lang/rust#119888)
- [Make async-fn-in-trait implementable with concrete signatures]
 (rust-lang/rust#120103)
- [Make matching on NaN a hard error, and remove the rest of
 `illegal_floating_point_literal_pattern`]
 (rust-lang/rust#116284)
- [static mut: allow mutable reference to arbitrary types, not just
 slices and arrays]
 (rust-lang/rust#117614)
- [Extend `invalid_reference_casting` to include references casting
 to bigger memory layout]
 (rust-lang/rust#118983)
- [Add `non_contiguous_range_endpoints` lint for singleton gaps
 after exclusive ranges]
 (rust-lang/rust#118879)
- [Add `wasm_c_abi` lint for use of older wasm-bindgen versions]
 (rust-lang/rust#117918)
 This lint currently only works when using Cargo.
- [Update `indirect_structural_match` and `pointer_structural_match`
 lints to match RFC]
 (rust-lang/rust#120423)
- [Make non-`PartialEq`-typed consts as patterns a hard error]
 (rust-lang/rust#120805)
- [Split `refining_impl_trait` lint into `_reachable`, `_internal` variants]
 (rust-lang/rust#121720)
- [Remove unnecessary type inference when using associated types
 inside of higher ranked `where`-bounds]
 (rust-lang/rust#119849)
- [Weaken eager detection of cyclic types during type inference]
 (rust-lang/rust#119989)
- [`trait Trait: Auto {}`: allow upcasting from `dyn Trait` to `dyn Auto`]
 (rust-lang/rust#119338)
Compiler
--------
- [Made `INVALID_DOC_ATTRIBUTES` lint deny by default]
 (rust-lang/rust#111505)
- [Increase accuracy of redundant `use` checking]
 (rust-lang/rust#117772)
- [Suggest moving definition if non-found macro_rules! is defined later]
 (rust-lang/rust#121130)
- [Lower transmutes from int to pointer type as gep on null]
 (rust-lang/rust#121282)
Target changes:
- [Windows tier 1 targets now require at least Windows 10]
 (rust-lang/rust#115141)
 - [Enable CMPXCHG16B, SSE3, SAHF/LAHF and 128-bit Atomics in tier 1 Windows]
 (rust-lang/rust#120820)
- [Add `wasm32-wasip1` tier 2 (without host tools) target]
 (rust-lang/rust#120468)
- [Add `wasm32-wasip2` tier 3 target]
 (rust-lang/rust#119616)
- [Rename `wasm32-wasi-preview1-threads` to `wasm32-wasip1-threads`]
 (rust-lang/rust#122170)
- [Add `arm64ec-pc-windows-msvc` tier 3 target]
 (rust-lang/rust#119199)
- [Add `armv8r-none-eabihf` tier 3 target for the Cortex-R52]
 (rust-lang/rust#110482)
- [Add `loongarch64-unknown-linux-musl` tier 3 target]
 (rust-lang/rust#121832)
Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.
Libraries
---------
- [Bump Unicode to version 15.1.0, regenerate tables]
 (rust-lang/rust#120777)
- [Make align_offset, align_to well-behaved in all cases]
 (rust-lang/rust#121201)
- [PartialEq, PartialOrd: document expectations for transitive chains]
 (rust-lang/rust#115386)
- [Optimize away poison guards when std is built with panic=abort]
 (rust-lang/rust#100603)
- [Replace pthread `RwLock` with custom implementation]
 (rust-lang/rust#110211)
- [Implement unwind safety for Condvar on all platforms]
 (rust-lang/rust#121768)
- [Add ASCII fast-path for `char::is_grapheme_extended`]
 (rust-lang/rust#121138)
Stabilized APIs
---------------
- [`impl Read for &Stdin`]
 (https://doc.rust-lang.org/stable/std/io/struct.Stdin.html#impl-Read-for-%26Stdin)
- [Accept non `'static` lifetimes for several `std::error::Error`
 related implementations] (rust-lang/rust#113833)
- [Make `impl<Fd: AsFd>` impl take `?Sized`]
 (rust-lang/rust#114655)
- [`impl From<TryReserveError> for io::Error`]
 (https://doc.rust-lang.org/stable/std/io/struct.Error.html#impl-From%3CTryReserveError%3E-for-Error)
These APIs are now stable in const contexts:
- [`Barrier::new()`]
 (https://doc.rust-lang.org/stable/std/sync/struct.Barrier.html#method.new)
Cargo
-----
- [Stabilize lockfile v4](rust-lang/cargo#12852)
- [Respect `rust-version` when generating lockfile]
 (rust-lang/cargo#12861)
- [Control `--charset` via auto-detecting config value]
 (rust-lang/cargo#13337)
- [Support `target.<triple>.rustdocflags` officially]
 (rust-lang/cargo#13197)
- [Stabilize global cache data tracking]
 (rust-lang/cargo#13492)
Misc
----
- [rustdoc: add `--test-builder-wrapper` arg to support wrappers
 such as RUSTC_WRAPPER when building doctests]
 (rust-lang/rust#114651)
Compatibility Notes
-------------------
- [Many unsafe precondition checks now run for user code with debug
 assertions enabled] (rust-lang/rust#120594)
 This change helps users catch undefined behavior in their code,
 though the details of how much is checked are generally not
 stable.
- [riscv only supports split_debuginfo=off for now]
 (rust-lang/rust#120518)
- [Consistently check bounds on hidden types of `impl Trait`]
 (rust-lang/rust#121679)
- [Change equality of higher ranked types to not rely on subtyping]
 (rust-lang/rust#118247)
- [When called, additionally check bounds on normalized function return type]
 (rust-lang/rust#118882)
- [Expand coverage for `arithmetic_overflow` lint]
 (rust-lang/rust#119432)
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.
- [Update to LLVM 18](rust-lang/rust#120055)
- [Build `rustc` with 1CGU on `x86_64-pc-windows-msvc`]
 (rust-lang/rust#112267)
- [Build `rustc` with 1CGU on `x86_64-apple-darwin`]
 (rust-lang/rust#112268)
- [Introduce `run-make` V2 infrastructure, a `run_make_support`
 library and port over 2 tests as example]
 (rust-lang/rust#113026)
- [Windows: Implement condvar, mutex and rwlock using futex]
 (rust-lang/rust#121956)
Version 1.77.0 (2024年03月21日)
==========================
- [Reveal opaque types within the defining body for exhaustiveness checking.]
 (rust-lang/rust#116821)
- [Stabilize C-string literals.]
 (rust-lang/rust#117472)
- [Stabilize THIR unsafeck.]
 (rust-lang/rust#117673)
- [Add lint `static_mut_refs` to warn on references to mutable statics.]
 (rust-lang/rust#117556)
- [Support async recursive calls (as long as they have indirection).]
 (rust-lang/rust#117703)
- [Undeprecate lint `unstable_features` and make use of it in the compiler.]
 (rust-lang/rust#118639)
- [Make inductive cycles in coherence ambiguous always.]
 (rust-lang/rust#118649)
- [Get rid of type-driven traversal in const-eval interning]
 (rust-lang/rust#119044),
 only as a [future compatiblity lint]
 (rust-lang/rust#122204) for now.
- [Deny braced macro invocations in let-else.]
 (rust-lang/rust#119062)
Compiler
--------
- [Include lint `soft_unstable` in future breakage reports.]
 (rust-lang/rust#116274)
- [Make `i128` and `u128` 16-byte aligned on x86-based targets.]
 (rust-lang/rust#116672)
- [Use `--verbose` in diagnostic output.]
 (rust-lang/rust#119129)
- [Improve spacing between printed tokens.]
 (rust-lang/rust#120227)
- [Merge the `unused_tuple_struct_fields` lint into `dead_code`.]
 (rust-lang/rust#118297)
- [Error on incorrect implied bounds in well-formedness check]
 (rust-lang/rust#118553),
 with a temporary exception for Bevy.
- [Fix coverage instrumentation/reports for non-ASCII source code.]
 (rust-lang/rust#119033)
- [Fix `fn`/`const` items implied bounds and well-formedness check.]
 (rust-lang/rust#120019)
- [Promote `riscv32{im|imafc}-unknown-none-elf` targets to tier 2.]
 (rust-lang/rust#118704)
- Add several new tier 3 targets:
 - [`aarch64-unknown-illumos`]
 (rust-lang/rust#112936)
 - [`hexagon-unknown-none-elf`]
 (rust-lang/rust#117601)
 - [`riscv32imafc-esp-espidf`]
 (rust-lang/rust#119738)
 - [`riscv32im-risc0-zkvm-elf`]
 (rust-lang/rust#117958)
Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.
Libraries
---------
- [Implement `From<&[T; N]>` for `Cow<[T]>`.]
 (rust-lang/rust#113489)
- [Remove special-case handling of `vec.split_off
 (0)`.](rust-lang/rust#119917)
Stabilized APIs
---------------
- [`array::each_ref`]
 (https://doc.rust-lang.org/stable/std/primitive.array.html#method.each_ref)
- [`array::each_mut`]
 (https://doc.rust-lang.org/stable/std/primitive.array.html#method.each_mut)
- [`core::net`]
 (https://doc.rust-lang.org/stable/core/net/index.html)
- [`f32::round_ties_even`]
 (https://doc.rust-lang.org/stable/std/primitive.f32.html#method.round_ties_even)
- [`f64::round_ties_even`]
 (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.round_ties_even)
- [`mem::offset_of!`]
 (https://doc.rust-lang.org/stable/std/mem/macro.offset_of.html)
- [`slice::first_chunk`]
 (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.first_chunk)
- [`slice::first_chunk_mut`]
 (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.first_chunk_mut)
- [`slice::split_first_chunk`]
 (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.split_first_chunk)
- [`slice::split_first_chunk_mut`]
 (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.split_first_chunk_mut)
- [`slice::last_chunk`]
 (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.last_chunk)
- [`slice::last_chunk_mut`]
 (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.last_chunk_mut)
- [`slice::split_last_chunk`]
 (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.split_last_chunk)
- [`slice::split_last_chunk_mut`]
 (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.split_last_chunk_mut)
- [`slice::chunk_by`]
 (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.chunk_by)
- [`slice::chunk_by_mut`]
 (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.chunk_by_mut)
- [`Bound::map`]
 (https://doc.rust-lang.org/stable/std/ops/enum.Bound.html#method.map)
- [`File::create_new`]
 (https://doc.rust-lang.org/stable/std/fs/struct.File.html#method.create_new)
- [`Mutex::clear_poison`]
 (https://doc.rust-lang.org/stable/std/sync/struct.Mutex.html#method.clear_poison)
- [`RwLock::clear_poison`]
 (https://doc.rust-lang.org/stable/std/sync/struct.RwLock.html#method.clear_poison)
Cargo
-----
- [Extend the build directive syntax with `cargo::`.]
 (rust-lang/cargo#12201)
- [Stabilize metadata `id` format as `PackageIDSpec`.]
 (rust-lang/cargo#12914)
- [Pull out as `cargo-util-schemas` as a crate.]
 (rust-lang/cargo#13178)
- [Strip all debuginfo when debuginfo is not requested.]
 (rust-lang/cargo#13257)
- [Inherit jobserver from env for all kinds of runners.]
 (rust-lang/cargo#12776)
- [Deprecate rustc plugin support in cargo.]
 (rust-lang/cargo#13248)
Rustdoc
-----
- [Allows links in markdown headings.]
 (rust-lang/rust#117662)
- [Search for tuples and unit by type with `()`.]
 (rust-lang/rust#118194)
- [Clean up the source sidebar's hide button.]
 (rust-lang/rust#119066)
- [Prevent JS injection from `localStorage`.]
 (rust-lang/rust#120250)
Misc
----
- [Recommend version-sorting for all sorting in style guide.]
 (rust-lang/rust#115046)
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.
- [Add more weirdness to `weird-exprs.rs`.]
 (rust-lang/rust#119028)

...in-let-block-works, r=jieyouxu
Ensure that tail expr receive lifetime extension
cc `@jieyouxu` `@traviscross`
It just came to me that we should add a test to make sure that we honor the contract from the temporary lifetime rule rust-lang#121346. We should continue to implement this rule in Edition 2021 onward and shorter tail expression lifetime should not override it.
This is a small PR to improve our assurance and establish a stronger contract.
Tracked by rust-lang#123739 

Rollup merge of rust-lang#129627 - dingxiangfei2009:ensure-tail-expr-in-let-block-works, r=jieyouxu
Ensure that tail expr receive lifetime extension
cc `@jieyouxu` `@traviscross`
It just came to me that we should add a test to make sure that we honor the contract from the temporary lifetime rule rust-lang#121346. We should continue to implement this rule in Edition 2021 onward and shorter tail expression lifetime should not override it.
This is a small PR to improve our assurance and establish a stronger contract.
Tracked by rust-lang#123739 

...in-let-block-works, r=jieyouxu
Ensure that tail expr receive lifetime extension
cc `@jieyouxu` `@traviscross`
It just came to me that we should add a test to make sure that we honor the contract from the temporary lifetime rule rust-lang#121346. We should continue to implement this rule in Edition 2021 onward and shorter tail expression lifetime should not override it.
This is a small PR to improve our assurance and establish a stronger contract.
Tracked by rust-lang#123739