1.72.0 #
- Released on: 24 August, 2023
- Branched from master on: 7 July, 2023
Language #
- Replace const eval limit by a lint and add an exponential backoff warning
- expand: Change how
#![cfg(FALSE)]
behaves on crate root - Stabilize inline asm for LoongArch64
- Uplift
clippy::undropped_manually_drops
lint - Uplift
clippy::invalid_utf8_in_unchecked
lint asinvalid_from_utf8_unchecked
andinvalid_from_utf8
- Uplift
clippy::cast_ref_to_mut
lint asinvalid_reference_casting
- Uplift
clippy::cmp_nan
lint asinvalid_nan_comparisons
- resolve: Remove artificial import ambiguity errors
- Don’t require associated types with Self: Sized bounds in
dyn Trait
objects
Compiler #
- Remember names of
cfg
-ed out items to mention them in diagnostics - Support for native WASM exceptions
- Add support for NetBSD/aarch64-be (big-endian arm64).
- Write to stdout if
-
is given as output file - Force all native libraries to be statically linked when linking a static binary
- Add Tier 3 support for
loongarch64-unknown-none*
- Prevent
.eh_frame
from being emitted for-C panic=abort
- Support 128-bit enum variant in debuginfo codegen
- compiler: update solaris/illumos to enable tsan support.
Refer to Rust’s [platform support page][platform-support-doc] for more information on Rust’s tiered platform support.
Libraries #
- Document memory orderings of
thread::{park, unpark}
- io: soften ‘at most one write attempt’ requirement in io::Write::write
- Specify behavior of HashSet::insert
- Relax implicit
T: Sized
bounds onBufReader<T>
,BufWriter<T>
andLineWriter<T>
- Update runtime guarantee for
select_nth_unstable
- Return
Ok
on kill if process has already exited - Implement PartialOrd for
Vec
s over different allocators - Use 128 bits for TypeId hash
- Don’t drain-on-drop in DrainFilter impls of various collections.
- Make
{Arc,Rc,Weak}::ptr_eq
ignore pointer metadata
Rustdoc #
- Allow whitespace as path separator like double colon
- Add search result item types after their name
- Search for slices and arrays by type with
[]
- Clean up type unification and “unboxing”
Stabilized APIs #
These APIs are now stable in const contexts:
Cargo #
- Enable
-Zdoctest-in-workspace
by default. When running each documentation test, the working directory is set to the root directory of the package the test belongs to. docs #12221 #12288 - Add support of the “default” keyword to reset previously set
build.jobs
parallelism back to the default. #12222
Compatibility Notes #
- Alter
Display
forIpv6Addr
for IPv4-compatible addresses - Cargo changed feature name validation check to a hard error. The warning was added in Rust 1.49. These extended characters aren’t allowed on crates.io, so this should only impact users of other registries, or people who don’t publish to a registry. #12291
- Demoted
mips*-unknown-linux-gnu*
targets from host tier 2 to target tier 3 support.