|
| 1 | +Version 1.80 (2024-07-25) |
| 2 | +========================== |
| 3 | + |
| 4 | +<a id="1.80-Language"></a> |
| 5 | + |
| 6 | +Language |
| 7 | +-------- |
| 8 | +- [Document maximum allocation size](https://github.com/rust-lang/rust/pull/116675/) |
| 9 | +- [Allow zero-byte offsets and ZST read/writes on arbitrary pointers](https://github.com/rust-lang/rust/pull/117329/) |
| 10 | +- [Support C23's variadics without a named parameter](https://github.com/rust-lang/rust/pull/124048/) |
| 11 | +- [Stabilize `exclusive_range_pattern` feature](https://github.com/rust-lang/rust/pull/124459/) |
| 12 | +- [Guarantee layout and ABI of `Result` in some scenarios](https://github.com/rust-lang/rust/pull/124870) |
| 13 | + |
| 14 | +<a id="1.80-Compiler"></a> |
| 15 | + |
| 16 | +Compiler |
| 17 | +-------- |
| 18 | +- [Update cc crate to v1.0.97 allowing additional spectre mitigations on MSVC targets](https://github.com/rust-lang/rust/pull/124892/) |
| 19 | +- [Allow field reordering on types marked `repr(packed(1))`](https://github.com/rust-lang/rust/pull/125360/) |
| 20 | +- [Add a lint against never type fallback affecting unsafe code](https://github.com/rust-lang/rust/pull/123939/) |
| 21 | +- [Disallow cast with trailing braced macro in let-else](https://github.com/rust-lang/rust/pull/125049/) |
| 22 | +- [Expand `for_loops_over_fallibles` lint to lint on fallibles behind references.](https://github.com/rust-lang/rust/pull/125156/) |
| 23 | +- [self-contained linker: retry linking without `-fuse-ld=lld` on CCs that don't support it](https://github.com/rust-lang/rust/pull/125417/) |
| 24 | +- [Do not parse CVarArgs (`...`) as a type in trait bounds](https://github.com/rust-lang/rust/pull/125863/) |
| 25 | +- Improvements to LLDB formatting [#124458](https://github.com/rust-lang/rust/pull/124458) [#124500](https://github.com/rust-lang/rust/pull/124500) |
| 26 | +- [For the wasm32-wasip2 target default to PIC and do not use `-fuse-ld=lld`](https://github.com/rust-lang/rust/pull/124858/) |
| 27 | +- [Add x86_64-unknown-linux-none as a tier 3 target](https://github.com/rust-lang/rust/pull/125023/) |
| 28 | +- [Lint on `foo.into_iter()` resolving to `&Box<[T]>: IntoIterator`](https://github.com/rust-lang/rust/pull/124097/) |
| 29 | + |
| 30 | +<a id="1.80-Libraries"></a> |
| 31 | + |
| 32 | +Libraries |
| 33 | +--------- |
| 34 | +- [Add `size_of` and `size_of_val` and `align_of` and `align_of_val` to the prelude](https://github.com/rust-lang/rust/pull/123168/) |
| 35 | +- [Abort a process when FD ownership is violated](https://github.com/rust-lang/rust/pull/124210/) |
| 36 | +- [io::Write::write_fmt: panic if the formatter fails when the stream does not fail](https://github.com/rust-lang/rust/pull/125012/) |
| 37 | +- [Panic if `PathBuf::set_extension` would add a path separator](https://github.com/rust-lang/rust/pull/125070/) |
| 38 | +- [Add assert_unsafe_precondition to unchecked_{add,sub,neg,mul,shl,shr} methods](https://github.com/rust-lang/rust/pull/121571/) |
| 39 | +- [Update `c_char` on AIX to use the correct type](https://github.com/rust-lang/rust/pull/122986/) |
| 40 | +- [`offset_of!` no longer returns a temporary](https://github.com/rust-lang/rust/pull/124484/) |
| 41 | +- [Handle sigma in `str.to_lowercase` correctly](https://github.com/rust-lang/rust/pull/124773/) |
| 42 | +- [Raise `DEFAULT_MIN_STACK_SIZE` to at least 64KiB](https://github.com/rust-lang/rust/pull/126059/) |
| 43 | + |
| 44 | +<a id="1.80-Stabilized-APIs"></a> |
| 45 | + |
| 46 | +Stabilized APIs |
| 47 | +--------------- |
| 48 | +- [`impl Default for Rc<CStr>`](https://doc.rust-lang.org/beta/alloc/rc/struct.Rc.html#impl-Default-for-Rc%3CCStr%3E) |
| 49 | +- [`impl Default for Rc<str>`](https://doc.rust-lang.org/beta/alloc/rc/struct.Rc.html#impl-Default-for-Rc%3Cstr%3E) |
| 50 | +- [`impl Default for Rc<[T]>`](https://doc.rust-lang.org/beta/alloc/rc/struct.Rc.html#impl-Default-for-Rc%3C%5BT%5D%3E) |
| 51 | +- [`impl Default for Arc<str>`](https://doc.rust-lang.org/beta/alloc/sync/struct.Arc.html#impl-Default-for-Arc%3Cstr%3E) |
| 52 | +- [`impl Default for Arc<CStr>`](https://doc.rust-lang.org/beta/alloc/sync/struct.Arc.html#impl-Default-for-Arc%3CCStr%3E) |
| 53 | +- [`impl Default for Arc<[T]>`](https://doc.rust-lang.org/beta/alloc/sync/struct.Arc.html#impl-Default-for-Arc%3C%5BT%5D%3E) |
| 54 | +- [`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) |
| 55 | +- [`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) |
| 56 | +- [`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) |
| 57 | +- [`LazyCell`](https://doc.rust-lang.org/beta/core/cell/struct.LazyCell.html) |
| 58 | +- [`LazyLock`](https://doc.rust-lang.org/beta/std/sync/struct.LazyLock.html) |
| 59 | +- [`Duration::div_duration_f32`](https://doc.rust-lang.org/beta/std/time/struct.Duration.html#method.div_duration_f32) |
| 60 | +- [`Duration::div_duration_f64`](https://doc.rust-lang.org/beta/std/time/struct.Duration.html#method.div_duration_f64) |
| 61 | +- [`Option::take_if`](https://doc.rust-lang.org/beta/std/option/enum.Option.html#method.take_if) |
| 62 | +- [`Seek::seek_relative`](https://doc.rust-lang.org/beta/std/io/trait.Seek.html#method.seek_relative) |
| 63 | +- [`BinaryHeap::as_slice`](https://doc.rust-lang.org/beta/std/collections/struct.BinaryHeap.html#method.as_slice) |
| 64 | +- [`NonNull::offset`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.offset) |
| 65 | +- [`NonNull::byte_offset`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_offset) |
| 66 | +- [`NonNull::add`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.add) |
| 67 | +- [`NonNull::byte_add`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_add) |
| 68 | +- [`NonNull::sub`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.sub) |
| 69 | +- [`NonNull::byte_sub`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_sub) |
| 70 | +- [`NonNull:offset_from`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.offset_from) |
| 71 | +- [`NonNull::byte_offset_from`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_offset_from) |
| 72 | +- [`NonNull::read`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.read) |
| 73 | +- [`NonNull::read_volatile`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.read_volatile) |
| 74 | +- [`NonNull::read_unaligned`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.read_unaligned) |
| 75 | +- [`NonNull::write`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write) |
| 76 | +- [`NonNull::write_volatile`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write_volatile) |
| 77 | +- [`NonNull::write_unaligned`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write_unaligned) |
| 78 | +- [`NonNull::write_bytes`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write_bytes) |
| 79 | +- [`NonNull::copy_to`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_to) |
| 80 | +- [`NonNull::copy_to_nonoverlapping`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_to_nonoverlapping) |
| 81 | +- [`NonNull::copy_from`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_from) |
| 82 | +- [`NonNull::copy_from_nonoverlapping`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_from_nonoverlapping) |
| 83 | +- [`NonNull::replace`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.replace) |
| 84 | +- [`NonNull::swap`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.swap) |
| 85 | +- [`NonNull::drop_in_place`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.drop_in_place) |
| 86 | +- [`NonNull::align_offset`](https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.align_offset) |
| 87 | +- [`<[T]>::split_at_checked`](https://doc.rust-lang.org/beta/std/primitive.slice.html#method.split_at_checked) |
| 88 | +- [`<[T]>::split_at_mut_checked`](https://doc.rust-lang.org/beta/std/primitive.slice.html#method.split_at_mut_checked) |
| 89 | +- [`str::split_at_checked`](https://doc.rust-lang.org/beta/std/primitive.str.html#method.split_at_checked) |
| 90 | +- [`str::split_at_mut_checked`](https://doc.rust-lang.org/beta/std/primitive.str.html#method.split_at_mut_checked) |
| 91 | +- [`str::trim_ascii`](https://doc.rust-lang.org/beta/std/primitive.str.html#method.trim_ascii) |
| 92 | +- [`str::trim_ascii_start`](https://doc.rust-lang.org/beta/std/primitive.str.html#method.trim_ascii_start) |
| 93 | +- [`str::trim_ascii_end`](https://doc.rust-lang.org/beta/std/primitive.str.html#method.trim_ascii_end) |
| 94 | +- [`<[AsciiChar]>::trim_ascii`](https://doc.rust-lang.org/beta/core/primitive.slice.html#method.trim_ascii) |
| 95 | +- [`<[AsciiChar]>::trim_ascii_start`](https://doc.rust-lang.org/beta/core/primitive.slice.html#method.trim_ascii_start) |
| 96 | +- [`<[AsciiChar]>::trim_ascii_end`](https://doc.rust-lang.org/beta/core/primitive.slice.html#method.trim_ascii_end) |
| 97 | +- [`Ipv4Addr::BITS`](https://doc.rust-lang.org/beta/core/net/struct.Ipv4Addr.html#associatedconstant.BITS) |
| 98 | +- [`Ipv4Addr::to_bits`](https://doc.rust-lang.org/beta/core/net/struct.Ipv4Addr.html#method.to_bits) |
| 99 | +- [`Ipv4Addr::from_bits`](https://doc.rust-lang.org/beta/core/net/struct.Ipv4Addr.html#method.from_bits) |
| 100 | +- [`Ipv6Addr::BITS`](https://doc.rust-lang.org/beta/core/net/struct.Ipv6Addr.html#associatedconstant.BITS) |
| 101 | +- [`Ipv6Addr::to_bits`](https://doc.rust-lang.org/beta/core/net/struct.Ipv6Addr.html#method.to_bits) |
| 102 | +- [`Ipv6Addr::from_bits`](https://doc.rust-lang.org/beta/core/net/struct.Ipv6Addr.html#method.from_bits) |
| 103 | +- [`Vec::<[T; N]>::into_flattened`](https://doc.rust-lang.org/beta/alloc/vec/struct.Vec.html#method.into_flattened) |
| 104 | +- [`<[[T; N]]>::as_flattened`](https://doc.rust-lang.org/beta/core/primitive.slice.html#method.as_flattened) |
| 105 | +- [`<[[T; N]]>::as_flattened_mut`](https://doc.rust-lang.org/beta/core/primitive.slice.html#method.as_flattened_mut) |
| 106 | + |
| 107 | +These APIs are now stable in const contexts: |
| 108 | + |
| 109 | +- [`<[T]>::last_chunk`](https://doc.rust-lang.org/beta/core/primitive.slice.html#method.last_chunk) |
| 110 | +- [`BinaryHeap::new`](https://doc.rust-lang.org/beta/std/collections/struct.BinaryHeap.html#method.new) |
| 111 | + |
| 112 | +<a id="1.80-Cargo"></a> |
| 113 | + |
| 114 | +Cargo |
| 115 | +----- |
| 116 | +- [Stabilize `-Zcheck-cfg` as always enabled](https://github.com/rust-lang/cargo/pull/13571/) |
| 117 | +- [Warn, rather than fail publish, if a target is excluded](https://github.com/rust-lang/cargo/pull/13713/) |
| 118 | +- [Add special `check-cfg` lint config for the `unexpected_cfgs` lint](https://github.com/rust-lang/cargo/pull/13913/) |
| 119 | +- [Stabilize `cargo update --precise <yanked>`](https://github.com/rust-lang/cargo/pull/13974/) |
| 120 | +- [Don't change file permissions on `Cargo.toml` when using `cargo add`](https://github.com/rust-lang/cargo/pull/13898/) |
| 121 | +- [Support using `cargo fix` on IPv6-only networks](https://github.com/rust-lang/cargo/pull/13907/) |
| 122 | + |
| 123 | +<a id="1.80-Rustdoc"></a> |
| 124 | + |
| 125 | +Rustdoc |
| 126 | +----- |
| 127 | + |
| 128 | +- [Allow searching for references](https://github.com/rust-lang/rust/pull/124148/) |
| 129 | +- [Stabilize `custom_code_classes_in_docs` feature](https://github.com/rust-lang/rust/pull/124577/) |
| 130 | +- [fix: In cross-crate scenarios show enum variants on type aliases of enums](https://github.com/rust-lang/rust/pull/125300/) |
| 131 | + |
| 132 | +<a id="1.80-Compatibility-Notes"></a> |
| 133 | + |
| 134 | +Compatibility Notes |
| 135 | +------------------- |
| 136 | +- [rustfmt estimates line lengths differently when using non-ascii characters](https://github.com/rust-lang/rustfmt/issues/6203) |
| 137 | +- [Type aliases are now handled correctly in orphan check](https://github.com/rust-lang/rust/pull/117164/) |
| 138 | +- [Allow instructing rustdoc to read from stdin via `-`](https://github.com/rust-lang/rust/pull/124611/) |
| 139 | +- [`std::env::{set_var, remove_var}` can no longer be converted to safe function pointers and no longer implement the `Fn` family of traits](https://github.com/rust-lang/rust/pull/124636) |
| 140 | +- [Warn (or error) when `Self` constructor from outer item is referenced in inner nested item](https://github.com/rust-lang/rust/pull/124187/) |
| 141 | +- [Turn `indirect_structural_match` and `pointer_structural_match` lints into hard errors](https://github.com/rust-lang/rust/pull/124661/) |
| 142 | +- [Make `where_clause_object_safety` lint a regular object safety violation](https://github.com/rust-lang/rust/pull/125380/) |
| 143 | +- [Turn `proc_macro_back_compat` lint into a hard error.](https://github.com/rust-lang/rust/pull/125596/) |
| 144 | +- [Detect unused structs even when implementing private traits](https://github.com/rust-lang/rust/pull/122382/) |
| 145 | +- [`std::sync::ReentrantLockGuard<T>` is no longer `Sync` if `T: !Sync`](https://github.com/rust-lang/rust/pull/125527) which means [`std::io::StdoutLock` and `std::io::StderrLock` are no longer Sync](https://github.com/rust-lang/rust/issues/127340) |
| 146 | + |
| 147 | +<a id="1.80-Internal-Changes"></a> |
| 148 | + |
| 149 | +Internal Changes |
| 150 | +---------------- |
| 151 | + |
| 152 | +These changes do not affect any public interfaces of Rust, but they represent |
| 153 | +significant improvements to the performance or internals of rustc and related |
| 154 | +tools. |
| 155 | + |
| 156 | +- Misc improvements to size of generated html by rustdoc e.g. [#124738](https://github.com/rust-lang/rust/pull/124738/) and [#123734](https://github.com/rust-lang/rust/pull/123734/) |
| 157 | +- [MSVC targets no longer depend on libc](https://github.com/rust-lang/rust/pull/124050/) |
| 158 | + |
1 | 159 | Version 1.79.0 (2024-06-13) |
2 | 160 | ========================== |
3 | 161 |
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