NetBSD/amd64 (8.0) and NetBSD/i386 (8.0). These bootstraps do
not use the pkgsrc llvm, i.e. are built with the rust-llvm option.
Disable warnings as fatal errors; 1.38.0 building 1.38.0 produces
warnings which would otherwise be fatal, ref.
https://github.com/rust-lang/rust/issues/65722
Also, revert back to BUILD_TARGET=build which I mistakenly changed
to "dist" previously.
Bump PKGVERSION.
1) bootstrap rustc adds -lgcc_s when linking
-> Dropped with a BUILDLINK_TRANSFORM
2) bootstrap rustc has shared linkage to libgcc_s.so.1
-> Until upstream changes this to static linkage, we look for
libgcc_s.so.1 in ${FILESDIR} where the user must place it manually.
3) newly built rustc adds -lstdc++ instead of -lc++ when linking llvm
-> fixed with patch-src_librustc__llvm_build.rs
4) newly built rustc adds -lgcc_s when linking
-> fixed with patch-src_libunwind_build.rs
Pkgsrc changes:
* Sadly, I had to reinstate the "make tar files" rust code to make
it possible to build cross-compiled bootstrap kits.
* Add an adjustable "BUILD_TARGET", "dist" for cross-building
a bootstrap kit, "build" for a normal native build.
* New bootstrap kits built for NetBSD/powerpc, NetBSD/earmv7hf,
and NetBSD/sparc64 version 1.31.1.
* gcc-wrap script amended to also drop -Wl,--enable-new-dtags
(so it could be used outside pkgsrc)
* Worked around use of AtomicU64 in release build tool (ugly band-aid patch).
Some platforms lack support for that type and associated operations.
Upstream changes:
- [Fix Rust failing to build on `powerpc-unknown-netbsd`][56562]
- [Fix broken go-to-definition in RLS][rls/1171]
- [Fix infinite loop on hover in RLS][rls/1170]
[56562]: https://github.com/rust-lang/rust/pull/56562
[rls/1171]: https://github.com/rust-lang/rls/issues/1171
[rls/1170]: https://github.com/rust-lang/rls/pull/1170
- use 'build' target for building, not 'dist'
- set jobs also for install target
- do not generate tarballs; we don't need them, but they take a lot of disk-space
- do not install 'src'
- do not generate 'install.log' nor 'uninstall.sh'
- on Darwin, use headerpad_max_install_names to be able to fix all dylibs
- make optimized bootstrap
- pkglint fixes
- get ready to depend on lang/llvm and devel/jemalloc
SunOS now needs -D_POSIX_PTHREAD_SEMANTICS and a patch to the rand module
to work around getrandom() system call failures.
Add -j argument to x.py for the number of make jobs.
Upstream changes:
Language
* Procedural macros are now available. These kinds of macros allow
for more powerful code generation. There is a new chapter available
in the Rust Programming Language book that goes further in depth.
* You can now use keywords as identifiers using the raw identifiers
syntax (r#), e.g. let r#for = true;
* Using anonymous parameters in traits is now deprecated with a
warning and will be a hard error in the 2018 edition.
* You can now use crate in paths. This allows you to refer to the
crate root in the path, e.g. use crate::foo; refers to foo in
src/lib.rs.
* Using a external crate no longer requires being prefixed with
::. Previously, using a external crate in a module without a
use statement required let json = ::serde_json::from_str(foo);
but can now be written as let json = serde_json::from_str(foo);.
* You can now apply the #[used] attribute to static items to
prevent the compiler from optimising them away, even if they
appear to be unused, e.g. #[used] static FOO: u32 = 1;
* You can now import and reexport macros from other crates with
the use syntax. Macros exported with #[macro_export] are now
placed into the root module of the crate. If your macro relies
on calling other local macros, it is recommended to export with
the #[macro_export(local_inner_macros)] attribute so users won't
have to import those macros.
* You can now catch visibility keywords (e.g. pub, pub(crate)) in
macros using the vis specifier.
* Non-macro attributes now allow all forms of literals, not just
strings. Previously, you would write #[attr("true")], and you
can now write #[attr(true)].
* You can now specify a function to handle a panic in the Rust
runtime with the #[panic_handler] attribute.
Compiler
* Added the riscv32imc-unknown-none-elf target.
* Added the aarch64-unknown-netbsd target
Libraries
* ManuallyDrop now allows the inner type to be unsized.
Stabilized APIs
* Ipv4Addr::BROADCAST
* Ipv4Addr::LOCALHOST
* Ipv4Addr::UNSPECIFIED
* Ipv6Addr::LOCALHOST
* Ipv6Addr::UNSPECIFIED
* Iterator::find_map
* The following methods are replacement methods for trim_left,
trim_right, trim_left_matches, and trim_right_matches, which
will be deprecated in 1.33.0:
* str::trim_end_matches
* str::trim_end
* str::trim_start_matches
* str::trim_start
Cargo
* cargo run doesn't require specifying a package in workspaces.
* cargo doc now supports --message-format=json. This is equivalent
to calling rustdoc --error-format=json.
* Cargo will now provide a progress bar for builds.
Misc
* rustdoc allows you to specify what edition to treat your code
as with the --edition option.
* rustdoc now has the --color (specify whether to output color)
and --error-format (specify error format, e.g. json) options.
* We now distribute a rust-gdbgui script that invokes gdbgui with
Rust debug symbols.
* Attributes from Rust tools such as rustfmt or clippy are now
available, e.g. #[rustfmt::skip] will skip formatting the next
item.
Pkgsrc changest:
* Explicitly list bootstrap kit version number for each kit we carry,
so that one entry's version doesn't "bleed into" following kits.
* Tweak for handling "earmv7hf" CPU type for NetBSD in the bootstrap.py
script
* Add two patches from Debian for sparc64; rust would generate code
generating unaligned accesses, causing SIGBUS on sparc64
* Update most of the bootstrap kits to version 1.29.2; need minimum
1.29.0 to build 1.30.0.
* Rust regrettably doesn't build for powerpc or earmv7hf in this version,
most probably due to "char" being "unsigned char" on these platforms.
Ref. https://github.com/rust-lang/rust/issues/55465
Upstream changes:
* Workaround for an aliasing-related LLVM bug, which caused miscompilation.
* The rls-preview component on the windows-gnu targets has been restored.
Pkgsrc changes:
* More commented-out settings for cross builds on NetBSD.
* Bump bootstrap kit versions to 1.29.2 for powerpc, sparc64
and earm7hf. Anyone up for testing for earm7hf?
* Because the built-in versions of libgit2, libssh2 and curl
can no longer be built with the pkgsrc-provided headers for
those packages (due to version skew; the built-in versions
have been updated to un-released newer code), the buildlink3.mk
files for those packages have been commented out.
* Similarly, to avoid using the native pkgsrc host's headers when cross-
building, the gcc-wrap script has been adjusted to also re-point
/usr/pkg/include into the destination's root (where those above pacakges
are not to be installed).
* Also have the gcc-wrap script deal with "-I dir" style directives,
and re-point these also into the destination's root.
* One patch has been integrated upstream, so removed here.
point to the bootstrap kit for NetBSD/powerpc I'm hosting at the
moment.
Also add the bits I used when cross-building the NetBSD/powerpc
rust on amd64, commented out, as well as the gcc / c++ wrapper
script I used in the process.
The changes affecting other ports are:
* We now add LD_LIBRARY_PATH in the make environment, so that
if the bootstrap kit binaries and shared libraries don't have
the $ORIGIN-style RPATH entries, it will still work
* The bootstrap.py script has been changed to turn off the
generation of debuginfo in "RUSTFLAGS"; for some so far unknown
reason, the NetBSD/powerpc rust will not build if you ask for
debug info. This could perhaps have been made OS-variant dependent,
but isn't at the moment.
So .. bump PKGREVISION.
NetBSD/i386 is temporarily disabled due to missing binary bootstraps.
Version 1.28.0 (2018-08-02)
===========================
Language
--------
- [The `#[repr(transparent)]` attribute is now stable.][51562] This attribute
allows a Rust newtype wrapper (`struct NewType<T>(T);`) to be represented as
the inner type across Foreign Function Interface (FFI) boundaries.
- [The keywords `pure`, `sizeof`, `alignof`, and `offsetof` have been unreserved
and can now be used as identifiers.][51196]
- [The `GlobalAlloc` trait and `#[global_allocator]` attribute are now
stable.][51241] This will allow users to specify a global allocator for
their program.
- [Unit test functions marked with the `#[test]` attribute can now return
`Result<(), E: Debug>` in addition to `()`.][51298]
- [The `lifetime` specifier for `macro_rules!` is now stable.][50385] This
allows macros to easily target lifetimes.
Compiler
--------
- [The `s` and `z` optimisation levels are now stable.][50265] These optimisations
prioritise making smaller binary sizes. `z` is the same as `s` with the
exception that it does not vectorise loops, which typically results in an even
smaller binary.
- [The short error format is now stable.][49546] Specified with
`--error-format=short` this option will provide a more compressed output of
rust error messages.
- [Added a lint warning when you have duplicated `macro_export`s.][50143]
- [Reduced the number of allocations in the macro parser.][50855] This can
improve compile times of macro heavy crates on average by 5%.
Libraries
---------
- [Implemented `Default` for `&mut str`.][51306]
- [Implemented `From<bool>` for all integer and unsigned number types.][50554]
- [Implemented `Extend` for `()`.][50234]
- [The `Debug` implementation of `time::Duration` should now be more easily
human readable.][50364] Previously a `Duration` of one second would printed as
`Duration { secs: 1, nanos: 0 }` and will now be printed as `1s`.
- [Implemented `From<&String>` for `Cow<str>`, `From<&Vec<T>>` for `Cow<[T]>`,
`From<Cow<CStr>>` for `CString`, `From<CString>, From<CStr>, From<&CString>`
for `Cow<CStr>`, `From<OsString>, From<OsStr>, From<&OsString>` for
`Cow<OsStr>`, `From<&PathBuf>` for `Cow<Path>`, and `From<Cow<Path>>`
for `PathBuf`.][50170]
- [Implemented `Shl` and `Shr` for `Wrapping<u128>`
and `Wrapping<i128>`.][50465]
- [`DirEntry::metadata` now uses `fstatat` instead of `lstat` when
possible.][51050] This can provide up to a 40% speed increase.
- [Improved error messages when using `format!`.][50610]
Stabilized APIs
---------------
- [`Iterator::step_by`]
- [`Path::ancestors`]
- [`SystemTime::UNIX_EPOCH`]
- [`alloc::GlobalAlloc`]
- [`alloc::Layout`]
- [`alloc::LayoutErr`]
- [`alloc::System`]
- [`alloc::alloc`]
- [`alloc::alloc_zeroed`]
- [`alloc::dealloc`]
- [`alloc::realloc`]
- [`alloc::handle_alloc_error`]
- [`btree_map::Entry::or_default`]
- [`fmt::Alignment`]
- [`hash_map::Entry::or_default`]
- [`iter::repeat_with`]
- [`num::NonZeroUsize`]
- [`num::NonZeroU128`]
- [`num::NonZeroU16`]
- [`num::NonZeroU32`]
- [`num::NonZeroU64`]
- [`num::NonZeroU8`]
- [`ops::RangeBounds`]
- [`slice::SliceIndex`]
- [`slice::from_mut`]
- [`slice::from_ref`]
- [`{Any + Send + Sync}::downcast_mut`]
- [`{Any + Send + Sync}::downcast_ref`]
- [`{Any + Send + Sync}::is`]
Cargo
-----
- [Cargo will now no longer allow you to publish crates with build scripts that
modify the `src` directory.][cargo/5584] The `src` directory in a crate should be
considered to be immutable.
Misc
----
- [The `suggestion_applicability` field in `rustc`'s json output is now
stable.][50486] This will allow dev tools to check whether a code suggestion
would apply to them.
Compatibility Notes
-------------------
- [Rust will no longer consider trait objects with duplicated constraints to
have implementations.][51276] For example the below code will now fail
to compile.
```rust
trait Trait {}
impl Trait + Send {
fn test(&self) { println!("one"); } //~ ERROR duplicate definitions with name `test`
}
impl Trait + Send + Send {
fn test(&self) { println!("two"); }
}
```
* SunOS parts are from jperkin@.
Changelog:
Version 1.27.0 (2018-06-21)
Language
Removed 'proc' from the reserved keywords list. This allows proc to be used as an identifer.
The dyn syntax is now available. This syntax is equivalent to the bare Trait syntax, and should make it clearer when being used in tandem with impl Trait. Since it is equivalent to the following syntax: &Trait == &dyn Trait, &mut Trait == &mut dyn Trait, and Box<Trait> == Box<dyn Trait>.
Attributes on generic parameters such as types and lifetimes are now stable. e.g. fn foo<#[lifetime_attr] 'a, #[type_attr] T: 'a>() {}
The #[must_use] attribute can now also be used on functions as well as types. It provides a lint that by default warns users when the value returned by a function has not been used.
Compiler
Added the armv5te-unknown-linux-musl target.
Libraries
SIMD (Single Instruction Multiple Data) on x86/x86_64 is now stable. This includes arch::x86 & arch::x86_64 modules which contain SIMD intrinsics, a new macro called is_x86_feature_detected!, the #[target_feature(enable="")] attribute, and adding target_feature = "" to the cfg attribute.
A lot of methods for [u8], f32, and f64 previously only available in std are now available in core.
The generic Rhs type parameter on ops::{Shl, ShlAssign, Shr} now defaults to Self.
std::str::replace now has the #[must_use] attribute to clarify that the operation isn't done in place.
Clone::clone, Iterator::collect, and ToOwned::to_owned now have the #[must_use] attribute to warn about unused potentially expensive allocations.
Stabilized APIs
DoubleEndedIterator::rfind
DoubleEndedIterator::rfold
DoubleEndedIterator::try_rfold
Duration::from_micros
Duration::from_nanos
Duration::subsec_micros
Duration::subsec_millis
HashMap::remove_entry
Iterator::try_fold
Iterator::try_for_each
NonNull::cast
Option::filter
String::replace_range
Take::set_limit
hint::unreachable_unchecked
os::unix::process::parent_id
process::id
ptr::swap_nonoverlapping
slice::rsplit_mut
slice::rsplit
slice::swap_with_slice
Cargo
cargo-metadata now includes authors, categories, keywords, readme, and repository fields.
Added the --target-dir optional argument. This allows you to specify a different directory than target for placing compilation artifacts.
Cargo will be adding automatic target inference for binaries, benchmarks, examples, and tests in the Rust 2018 edition. If your project specifies specific targets e.g. using [[bin]] and have other binaries in locations where cargo would infer a binary, Cargo will produce a warning. You can disable this feature ahead of time by setting any of the following autobins, autobenches, autoexamples, autotests to false.
Cargo will now cache compiler information. This can be disabled by setting CARGO_CACHE_RUSTC_INFO=0 in your environment.
Misc
Added "The Rustc book" into the official documentation. "The Rustc book" documents and teaches how to use the rustc compiler.
All books available on doc.rust-lang.org are now searchable.
Compatibility Notes
Calling a CharExt or StrExt method directly on core will no longer work. e.g. ::core::prelude::v1::StrExt::is_empty("") will not compile, "".is_empty() will still compile.
Debug output on atomic::{AtomicBool, AtomicIsize, AtomicPtr, AtomicUsize} will only print the inner type. e.g. print!("{:?}", AtomicBool::new(true)) will print true not AtomicBool(true).
The maximum number for repr(align(N)) is now 2^29. Previously you could enter higher numbers but they were not supported by LLVM. Up to 512MB alignment should cover all use cases.
Changelog:
Version 1.26.0 (2018-05-10)
Language
Closures now implement Copy and/or Clone if all captured variables implement either or both traits.
The inclusive range syntax e.g. for x in 0..=10 is now stable.
Stablise '_. The underscore lifetime can be used anywhere where a lifetime can be elided.
impl Trait is now stable allowing you to have abstract types in returns or in function parameters. e.g. fn foo() -> impl Iterator<Item=u8> or fn open(path: impl AsRef<Path>).
Pattern matching will now automatically apply dereferences.
128-bit integers in the form of u128 and i128 are now stable.
main can now return Result<(), E: Debug> in addition to ().
A lot of operations are now available in a const context. E.g. You can now index into constant arrays, reference and dereference into constants, and use Tuple struct constructors.
Fixed entry slice patterns are now stable. e.g.
let points = [1, 2, 3, 4];
match points {
[1, 2, 3, 4] => println!("All points were sequential."),
_ => println!("Not all points were sequential."),
}
Compiler
LLD is now used as the default linker for wasm32-unknown-unknown.
Fixed exponential projection complexity on nested types. This can provide up to a ~12% reduction in compile times for certain crates.
Added the --remap-path-prefix option to rustc. Allowing you to remap path prefixes outputted by the compiler.
Added powerpc-unknown-netbsd target.
Libraries
Implemented From<u16> for usize & From<{u8, i16}> for isize.
Added hexadecimal formatting for integers with fmt::Debug e.g. assert!(format!("{:02x?}", b"Foo\0") == "[46, 6f, 6f, 00]")
Implemented Default, Hash for cmp::Reverse.
Optimized str::repeat being 8x faster in large cases.
ascii::escape_default is now available in libcore.
Trailing commas are now supported in std and core macros.
Implemented Copy, Clone for cmp::Reverse
Implemented Clone for char::{ToLowercase, ToUppercase}.
Stabilized APIs
*const T::add
*const T::copy_to_nonoverlapping
*const T::copy_to
*const T::read_unaligned
*const T::read_volatile
*const T::read
*const T::sub
*const T::wrapping_add
*const T::wrapping_sub
*mut T::add
*mut T::copy_to_nonoverlapping
*mut T::copy_to
*mut T::read_unaligned
*mut T::read_volatile
*mut T::read
*mut T::replace
*mut T::sub
*mut T::swap
*mut T::wrapping_add
*mut T::wrapping_sub
*mut T::write_bytes
*mut T::write_unaligned
*mut T::write_volatile
*mut T::write
Box::leak
FromUtf8Error::as_bytes
LocalKey::try_with
Option::cloned
btree_map::Entry::and_modify
fs::read_to_string
fs::read
fs::write
hash_map::Entry::and_modify
iter::FusedIterator
ops::RangeInclusive
ops::RangeToInclusive
process::id
slice::rotate_left
slice::rotate_right
String::retain
Cargo
Cargo will now output path to custom commands when -v is passed with --list
The Cargo binary version is now the same as the Rust version
Cargo.lock files are now included in published crates.
Misc
The second edition of "The Rust Programming Language" book is now recommended over the first.
Compatibility Notes
aliasing a Fn trait as dyn no longer works. E.g. the following syntax is now invalid.
use std::ops::Fn as dyn;
fn g(_: Box<dyn(std::fmt::Debug)>) {}
The result of dereferences are no longer promoted to 'static. e.g.
fn main() {
const PAIR: &(i32, i32) = &(0, 1);
let _reversed_pair: &'static _ = &(PAIR.1, PAIR.0); // Doesn't work
}
Deprecate AsciiExt trait in favor of inherent methods.
".e0" will now no longer parse as 0.0 and will instead cause an error.
Removed hoedown from rustdoc.
Bounds on higher-kinded lifetimes a hard error.
Changelog:
Version 1.25.0 (2018-03-29)
Language
Stabilised #[repr(align(x))]. RFC 1358
You can now use nested groups of imports. e.g. use std::{fs::File, io::Read, path::{Path, PathBuf}};
You can now have | at the start of a match arm. e.g.
enum Foo { A, B, C }
fn main() {
let x = Foo::A;
match x {
| Foo::A
| Foo::B => println!("AB"),
| Foo::C => println!("C"),
}
}
Compiler
Upgraded to LLVM 6.
Added -C lto=val option.
Added i586-unknown-linux-musl target
Libraries
Impl Send for process::Command on Unix.
Impl PartialEq and Eq for ParseCharError.
UnsafeCell::into_inner is now safe.
Implement libstd for CloudABI.
Float::{from_bits, to_bits} is now available in libcore.
Implement AsRef<Path> for Component
Implemented Write for Cursor<&mut Vec<u8>>
Moved Duration to libcore.
Stabilized APIs
Location::column
ptr::NonNull
The following functions can now be used in a constant expression. eg. static MINUTE: Duration = Duration::from_secs(60);
Duration::new
Duration::from_secs
Duration::from_millis
Cargo
cargo new no longer removes rust or rs prefixs/suffixs.
cargo new now defaults to creating a binary crate, instead of a library crate.
Misc
Rust by example is now shipped with new releases
Compatibility Notes
Deprecated net::lookup_host.
rustdoc has switched to pulldown as the default markdown renderer.
The borrow checker was sometimes incorrectly permitting overlapping borrows around indexing operations (see #47349). This has been fixed (which also enabled some correct code that used to cause errors (e.g. #33903 and #46095).
Removed deprecated unstable attribute #[simd].
* Disable Solaris/SunOS suppprt for a while
Changelog:
# What's in 1.23.0 stable
New year, new Rust! For our first improvement today, we now avoid
some unnecessary copies in certain situations. We've seen memory
usage of using rustc to drop 5-10% with this change; it may be
different with your programs.
The documentation team has been on a long journey to move rustdoc
to use CommonMark. Previously, rustdoc never guaranteed which
markdown rendering engine it used, but we're finally committing to
CommonMark. As part of this release, we render the documentation
with our previous renderer, Hoedown, but also render it with a
CommonMark compliant renderer, and warn if there are any differences.
There should be a way for you to modify the syntax you use to render
correctly under both; we're not aware of any situations where this
is impossible. Docs team member Guillaume Gomez has written a blog
post showing some common differences and how to solve them. In a
future release, we will switch to using the CommonMark renderer by
default. This warning landed in nightly in May of last year, and
has been on by default since October of last year, so many crates
have already fixed any issues that they've found.
In other documentation news, historically, Cargo's docs have been
a bit strange. Rather than being on doc.rust-lang.org, they've been
at doc.crates.io. With this release, that's changing. You can now
find Cargo's docs at doc.rust-lang.org/cargo. Additionally, they've
been converted to the same format as our other long-form documentation.
We'll be adding a redirect from doc.crates.io to this page, and
you can expect to see more improvements and updates to Cargo's docs
throughout the year.
See the detailed release notes for more.
## Library stabilizations
As of Rust 1.0, a trait named AsciiExt existed to provide ASCII
related functionality on u8, char, [u8], and str. To use it, you'd
write code like this:
use std::ascii::AsciiExt;
let ascii = 'a';
let non_ascii = '❤';
let int_ascii = 97;
assert!(ascii.is_ascii());
assert!(!non_ascii.is_ascii());
assert!(int_ascii.is_ascii());
In Rust 1.23, these methods are now defined directly on those types,
and so you no longer need to import the trait. Thanks to our
stability guarantees, this trait still exists, so if you'd like to
still support Rust versions before Rust 1.23, you can do this:
#[allow(unused_imports)]
use std::ascii::AsciiExt;
...to suppress the related warning. Once you drop support for older
Rusts, you can remove both lines, and everything will continue to
work.
Additionally, a few new APIs were stabilized this release:
The various std::sync::atomic types now implement From their
non-atomic types. For example, let x = AtomicBool::from(true);.
() now implements FromIterator<()>; check the PR for a neat
use-case. RwLock<T> has had its Send restriction lifted
See the detailed release notes for more.
## Cargo features
cargo check can now check your unit tests.
cargo uninstall can now uninstall more than one package in one
command.
* Disable SunOS support for a while
Changelog:
Version 1.22.1 (2017-11-22)
Update Cargo to fix an issue with macOS 10.13 "High Sierra"
Version 1.22.0 (2017-11-22)
Language
non_snake_case lint now allows extern no-mangle functions
Now accepts underscores in unicode escapes
T op= &T now works for numeric types. eg. let mut x = 2; x += &8;
types that impl Drop are now allowed in const and static types
Compiler
rustc now defaults to having 16 codegen units at debug on supported
platforms.
rustc will no longer inline in codegen units when compiling for debug
This should decrease compile times for debug builds.
strict memory alignment now enabled on ARMv6
Remove support for the PNaCl target le32-unknown-nacl
Libraries
Allow atomic operations up to 32 bits on armv5te_unknown_linux_gnueabi
Box<Error> now impls From<Cow<str>>
std::mem::Discriminant is now guaranteed to be Send + Sync
fs::copy now returns the length of the main stream on NTFS.
Properly detect overflow in Instant += Duration.
impl Hasher for {&mut Hasher, Box<Hasher>}
impl fmt::Debug for SplitWhitespace.
Option<T> now impls Try This allows for using ? with Option types.
Stabilized APIs
Cargo
Cargo will now build multi file examples in subdirectories of the
examples folder that have a main.rs file.
Changed [root] to [package] in Cargo.lock Packages with the old
format will continue to work and can be updated with cargo update.
Now supports vendoring git repositories
Misc
libbacktrace is now available on Apple platforms.
Stabilised the compile_fail attribute for code fences in doc-comments.
This now lets you specify that a given code example will fail to compile.
Compatibility Notes
The minimum Android version that rustc can build for has been
bumped to 4.0 from 2.3
Allowing T op= &T for numeric types has broken some type inference cases
No changes intended on other platforms, the configure script arguments
should be identical to those previously found in config.toml. Doing it
this way makes it a lot easier to have per-OS configuration.
* Disable SunOS/Solaris support because newer bootstrap is not available
* Include Rust libraries and Cargo
Changelog:
Version 1.20.0 (2017-08-31)
Language
Associated constants are now stabilised.
A lot of macro bugs are now fixed.
Compiler
Struct fields are now properly coerced to the expected field type.
Enabled wasm LLVM backend WASM can now be built with the wasm32-experimental-emscripten target.
Changed some of the error messages to be more helpful.
Add support for RELRO(RELocation Read-Only) for platforms that support it.
rustc now reports the total number of errors on compilation failure previously this was only the number of errors in the pass that failed.
Expansion in rustc has been sped up 29x.
added msp430-none-elf target.
rustc will now suggest one-argument enum variant to fix type mismatch when applicable
Fixes backtraces on Redox
rustc now identifies different versions of same crate when absolute paths of different types match in an error message.
Libraries
Relaxed Debug constraints on {HashMap,BTreeMap}::{Keys,Values}.
Impl PartialEq, Eq, PartialOrd, Ord, Debug, Hash for unsized tuples.
Impl fmt::{Display, Debug} for Ref, RefMut, MutexGuard, RwLockReadGuard, RwLockWriteGuard
Impl Clone for DefaultHasher.
Impl Sync for SyncSender.
Impl FromStr for char
Fixed how {f32, f64}::{is_sign_negative, is_sign_positive} handles NaN.
allow messages in the unimplemented!() macro. ie. unimplemented!("Waiting for 1.21 to be stable")
pub(restricted) is now supported in the thread_local! macro.
Upgrade to Unicode 10.0.0
Reimplemented {f32, f64}::{min, max} in Rust instead of using CMath.
Skip the main thread's manual stack guard on Linux
Iterator::nth for ops::{Range, RangeFrom} is now done in O(1) time
#[repr(align(N))] attribute max number is now 2^31 - 1. This was previously 2^15.
{OsStr, Path}::Display now avoids allocations where possible
Stabilized APIs
CStr::into_c_string
CString::as_c_str
CString::into_boxed_c_str
Chain::get_mut
Chain::get_ref
Chain::into_inner
Option::get_or_insert_with
Option::get_or_insert
OsStr::into_os_string
OsString::into_boxed_os_str
Take::get_mut
Take::get_ref
Utf8Error::error_len
char::EscapeDebug
char::escape_debug
compile_error!
f32::from_bits
f32::to_bits
f64::from_bits
f64::to_bits
mem::ManuallyDrop
slice::sort_unstable_by_key
slice::sort_unstable_by
slice::sort_unstable
str::from_boxed_utf8_unchecked
str::as_bytes_mut
str::as_bytes_mut
str::from_utf8_mut
str::from_utf8_unchecked_mut
str::get_mut
str::get_unchecked_mut
str::get_unchecked
str::get
str::into_boxed_bytes
Cargo
Cargo API token location moved from ~/.cargo/config to ~/.cargo/credentials.
Cargo will now build main.rs binaries that are in sub-directories of src/bin. ie. Having src/bin/server/main.rs and src/bin/client/main.rs generates target/debug/server and target/debug/client
You can now specify version of a binary when installed through cargo install using --vers.
Added --no-fail-fast flag to cargo to run all benchmarks regardless of failure.
Changed the convention around which file is the crate root.
The include/exclude property in Cargo.toml now accepts gitignore paths instead of glob patterns. Glob patterns are now deprecated.
Compatibility Notes
Functions with 'static in their return types will now not be as usable as if they were using lifetime parameters instead.
The reimplementation of {f32, f64}::is_sign_{negative, positive} now takes the sign of NaN into account where previously didn't.
Version 1.19.0 (2017-07-20)
Language
Numeric fields can now be used for creating tuple structs. RFC 1506 For example struct Point(u32, u32); let x = Point { 0: 7, 1: 0 };.
Macro recursion limit increased to 1024 from 64.
Added lint for detecting unused macros.
loop can now return a value with break. RFC 1624 For example: let x = loop { break 7; };
C compatible unions are now available. RFC 1444 They can only contain Copy types and cannot have a Drop implementation. Example: union Foo { bar: u8, baz: usize }
Non capturing closures can now be coerced into fns, RFC 1558 Example: let foo: fn(u8) -> u8 = |v: u8| { v };
Compiler
Add support for bootstrapping the Rust compiler toolchain on Android.
Change arm-linux-androideabi to correspond to the armeabi official ABI. If you wish to continue targeting the armeabi-v7a ABI you should use --target armv7-linux-androideabi.
Fixed ICE when removing a source file between compilation sessions.
Minor optimisation of string operations.
Compiler error message is now aborting due to previous error(s) instead of aborting due to N previous errors This was previously inaccurate and would only count certain kinds of errors.
The compiler now supports Visual Studio 2017
The compiler is now built against LLVM 4.0.1 by default
Added a lot of new error codes
Added target-feature=+crt-static option RFC 1721 Which allows libraries with C Run-time Libraries(CRT) to be statically linked.
Fixed various ARM codegen bugs
Libraries
String now implements FromIterator<Cow<'a, str>> and Extend<Cow<'a, str>>
Vec now implements From<&mut [T]>
Box<[u8]> now implements From<Box<str>>
SplitWhitespace now implements Clone
[u8]::reverse is now 5x faster and [u16]::reverse is now 1.5x faster
eprint! and eprintln! macros added to prelude. Same as the print! macros, but for printing to stderr.
Stabilized APIs
OsString::shrink_to_fit
cmp::Reverse
Command::envs
thread::ThreadId
Cargo
Build scripts can now add environment variables to the environment the crate is being compiled in. Example: println!("cargo:rustc-env=FOO=bar");
Subcommands now replace the current process rather than spawning a new child process
Workspace members can now accept glob file patterns
Added --all flag to the cargo bench subcommand to run benchmarks of all the members in a given workspace.
Updated libssh2-sys to 0.2.6
Target directory path is now in the cargmetadata
Cargo no longer checks out a local working directory for the crates.io index This should provide smaller file size for the registry, and improve cloning times, especially on Windows machines.
Added an --exclude option for excluding certai using the --all option
Cargo will now automatically retry when receiving a 5xx error from crates.io
The --features option now accepts multiple comma or space delimited values.
Added support for custom target specific runners
Misc
Added ow prefer to download rust packages with XZ compression over GZip packages.
Added the ability to escape # in rust documentation By adding additional #'s ie. ## is now #
Compatibility Notes
MutexGuard<T> may only be Sync if T is Sync.
-Z flagning for a year previous to this.
As a result of the -Z flag change, the cargo-check plugin no longer works. Users should migrate to the built-in check command, which has been available since 1.16.
Ending a float literal with ._ is now a hard erro use ::self::foo; is now a hard error. self paths are always relative while the :: prefix makes a path absolute, but was ignored and the path was relative regardless.
Floating point constants in match patterns is now a hard error This was previously ts that don't derive PartialEq & Eq used match patterns is now a hard error This was previously a warning.
Lifetimes named '_ are no longer allowed. This was previously a warning.
From the pound escape, lines consisting of multiple #s are now visible
It is an error to reexport private enum variants. This is known to break a number of crates that depend on an older version of mustache.
On Windows, if VCINSTALLDIR is set incorrectly, rustc will try to use it to find the linker, and the build will fail where it did not previously
Version 1.18.0 (2017-06-08)
Language
Stabilize pub(restricted) pub can now accept a module path to make the item visible to just that module tree. Also accepts the keyword crate to make something public to the whole crate but not users of the library. Example: pub(crate) mod utils;. RFC 1422.
Stabilize #![windows_subsystem] attribute conservative exposure of the /SUBSYSTEM linker flag on Windows platforms. RFC 1665.
Refactor of trait object type parsing Now ty in macros can accept types like Write + Send, trailing + are now supported in trait objects, and better error reporting for trait objects starting with ?Sized.
0e+10 is now a valid floating point literal
Now warns if you bind a lifetime parameter to 'static
Tuples, Enum variant fields, and structs with no repr attribute or with #[repr(Rust)] are reordered to minimize padding and produce a smaller representation in some cases.
Compiler
rustc can now emit mir with --emit mir
Improved LLVM IR for trivial functions
Added explanation for E0090(Wrong number of lifetimes are supplied)
rustc compilation is now 15%-20% faster Thanks to optimisation opportunities found through profiling
Improved backtrace formatting when panicking
Libraries
Specialized Vec::from_iter being passed vec::IntoIter if the iterator hasn't been advanced the original Vec is reassembled with no actual iteration or reallocation.
Simplified HashMap Bucket interface provides performance improvements for iterating and cloning.
Specialize Vec::from_elem to use calloc
Fixed Race condition in fs::create_dir_all
No longer caching stdio on Windows
Optimized insertion sort in slice insertion sort in some cases 2.50%~ faster and in one case now 12.50% faster.
Optimized AtomicBool::fetch_nand
Stabilized APIs
Child::try_wait
HashMap::retain
HashSet::retain
PeekMut::pop
TcpStream::peek
UdpSocket::peek
UdpSocket::peek_from
Cargo
Added partial Pijul support Pijul is a version control system in Rust. You can now create new cargo projects with Pijul using cargo new --vcs pijul
Now always emits build script warnings for crates that fail to build
Added Android build support
Added --bins and --tests flags now you can build all programs of a certain type, for example cargo build --bins will build all binaries.
Added support for haiku
Misc
rustdoc can now use pulldown-cmark with the --enable-commonmark flag
Added rust-winbg script for better debugging on Windows
Rust now uses the official cross compiler for NetBSD
rustdoc now accepts # at the start of files
Fixed jemalloc support for musl
Compatibility Notes
Changes to how the 0 flag works in format! Padding zeroes are now always placed after the sign if it exists and before the digits. With the # flag the zeroes are placed after the prefix and before the digits.
Due to the struct field optimisation, using transmute on structs that have no repr attribute or #[repr(Rust)] will no longer work. This has always been undefined behavior, but is now more likely to break in practice.
The refactor of trait object type parsing fixed a bug where + was receiving the wrong priority parsing things like &for<'a> Tr<'a> + Send as &(for<'a> Tr<'a> + Send) instead of (&for<'a> Tr<'a>) + Send
Overlapping inherent impls are now a hard error
PartialOrd and Ord must agree on the ordering.
rustc main.rs -o out --emit=asm,llvm-ir Now will output out.asm and out.ll instead of only one of the filetypes.
calling a function that returns Self will no longer work when the size of Self cannot be statically determined.
rustc now builds with a "pthreads" flavour of MinGW for Windows GNU this has caused a few regressions namely:
Changed the link order of local static/dynamic libraries (respecting the order on given rather than having the compiler reorder).
Changed how MinGW is linked, native code linked to dynamic libraries may require manually linking to the gcc support library (for the native code itself)
Version 1.17.0 (2017-04-27)
Language
The lifetime of statics and consts defaults to 'static. RFC 1623
Fields of structs may be initialized without duplicating the field/variable names. RFC 1682
Self may be included in the where clause of impls. RFC 1647
When coercing to an unsized type lifetimes must be equal. That is, there is no subtyping between T and U when T: Unsize<U>. For example, coercing &mut [&'a X; N] to &mut [&'b X] requires 'a be equal to 'b. Soundness fix.
Values passed to the indexing operator, [], automatically coerce
Static variables may contain references to other statics
Compiler
Exit quickly on only --emit dep-info
Make -C relocation-model more correctly determine whether the linker creates a position-independent executable
Add -C overflow-checks to directly control whether integer overflow panics
The rustc type checker now checks items on demand instead of in a single in-order pass. This is mostly an internal refactoring in support of future work, including incremental type checking, but also resolves RFC 1647, allowing Self to appear in impl where clauses.
Optimize vtable loads
Turn off vectorization for Emscripten targets
Provide suggestions for unknown macros imported with use
Fix ICEs in path resolution
Strip exception handling code on Emscripten when panic=abort
Add clearer error message using &str + &str
Stabilized APIs
Arc::into_raw
Arc::from_raw
Arc::ptr_eq
Rc::into_raw
Rc::from_raw
Rc::ptr_eq
Ordering::then
Ordering::then_with
BTreeMap::range
BTreeMap::range_mut
collections::Bound
process::abort
ptr::read_unaligned
ptr::write_unaligned
Result::expect_err
Cell::swap
Cell::replace
Cell::into_inner
Cell::take
Libraries
BTreeMap and BTreeSet can iterate over ranges
Cell can store non-Copy types. RFC 1651
String implements FromIterator<&char>
Box implements a number of new conversions: From<Box<str>> for String, From<Box<[T]>> for Vec<T>, From<Box<CStr>> for CString, From<Box<OsStr>> for OsString, From<Box<Path>> for PathBuf, Into<Box<str>> for String, Into<Box<[T]>> for Vec<T>, Into<Box<CStr>> for CString, Into<Box<OsStr>> for OsString, Into<Box<Path>> for PathBuf, Default for Box<str>, Default for Box<CStr>, Default for Box<OsStr>, From<&CStr> for Box<CStr>, From<&OsStr> for Box<OsStr>, From<&Path> for Box<Path>
ffi::FromBytesWithNulError implements Error and Display
Specialize PartialOrd<A> for [A] where A: Ord
Slightly optimize slice::sort
Add ToString trait specialization for Cow<'a, str> and String
Box<[T]> implements From<&[T]> where T: Copy, Box<str> implements From<&str>
IpAddr implements From for various arrays. SocketAddr implements From<(I, u16)> where I: Into<IpAddr>
format! estimates the needed capacity before writing a string
Support unprivileged symlink creation in Windows
PathBuf implements Default
Implement PartialEq<[A]> for VecDeque<A>
HashMap resizes adaptively to guard against DOS attacks and poor hash functions.
Cargo
Add cargo check --all
Add an option to ignore SSL revocation checking
Add cargo run --package
Add required_features
Assume build.rs is a build script
Find workspace via workspace_root link in containing member
Misc
Documentation is rendered with mdbook instead of the obsolete, in-tree rustbook
The "Unstable Book" documents nightly-only features
Improve the style of the sidebar in rustdoc output
Configure build correctly on 64-bit CPU's with the armhf ABI
Fix MSP430 breakage due to i128
Preliminary Solaris/SPARCv9 support
rustc is linked statically on Windows MSVC targets, allowing it to run without installing the MSVC runtime.
rustdoc --test includes file names in test names
This release includes builds of std for sparc64-unknown-linux-gnu, aarch64-unknown-linux-fuchsia, and x86_64-unknown-linux-fuchsia.
Initial support for aarch64-unknown-freebsd
Initial support for i686-unknown-netbsd
This release no longer includes the old makefile build system. Rust is built with a custom build system, written in Rust, and with Cargo.
Add Debug implementations for libcollection structs
TypeId implements PartialOrd and Ord
--test-threads=0 produces an error
rustup installs documentation by default
The Rust source includes NatVis visualizations. These can be used by WinDbg and Visual Studio to improve the debugging experience.
Compatibility Notes
Rust 1.17 does not correctly detect the MSVC 2017 linker. As a workaround, either use MSVC 2015 or run vcvars.bat.
When coercing to an unsized type lifetimes must be equal. That is, disallow subtyping between T and U when T: Unsize<U>, e.g. coercing &mut [&'a X; N] to &mut [&'b X] requires 'a be equal to 'b. Soundness fix.
format! and Display::to_string panic if an underlying formatting implementation returns an error. Previously the error was silently ignored. It is incorrect for write_fmt to return an error when writing to a string.
In-tree crates are verified to be unstable. Previously, some minor crates were marked stable and could be accessed from the stable toolchain.
Rust git source no longer includes vendored crates. Those that need to build with vendored crates should build from release tarballs.
Fix inert attributes from proc_macro_derives
During crate resolution, rustc prefers a crate in the sysroot if two crates are otherwise identical. Unlikely to be encountered outside the Rust build system.
Fixed bugs around how type inference interacts with dead-code. The existing code generally ignores the type of dead-code unless a type-hint is provided; this can cause surprising inference interactions particularly around defaulting. The new code uniformly ignores the result type of dead-code.
Tuple-struct constructors with private fields are no longer visible
Lifetime parameters that do not appear in the arguments are now considered early-bound, resolving a soundness bug (#32330). The hr_lifetime_in_assoc_type future-compatibility lint has been in effect since April of 2016.
rustdoc: fix doctests with non-feature crate attributes
Make transmuting from fn item types to pointer-sized types a hard error
pkgsrc notes:
* The build requires binary bootstraps built by the Rust team. Due
to the requirement that only the previous version is supported as
a bootstrap compiler, and new versions of Rust are released every
6 weeks, it is unlikely to be practical to build TNF bootstraps.
Users should evaluate whether they trust binaries from upstream.
* There is currently no SunOS bootstrap provided by the Rust team,
so for now a version built by myself is provided by Joyent.
* Only Darwin/Linux/SunOS are currently supported. The Rust team do
provide NetBSD bootstraps so support should be easy enough to add.
Information about Rust from the DESCR:
Rust is a systems programming language focused on three goals: safety,
speed, and concurrency. It maintains these goals without having a
garbage collector, making it a useful language for a number of use cases
other languages aren't good at: embedding in other languages, programs
with specific space and time requirements, and writing low-level code,
like device drivers and operating systems.
It improves on current languages targeting this space by having a number
of compile-time safety checks that produce no runtime overhead, while
eliminating all data races. Rust also aims to achieve "zero-cost
abstractions" even though some of these abstractions feel like those of
a high-level language. Even then, Rust still allows precise control
like a low-level language would.
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