# Recommended update for rust, rust1.81 Announcement ID: SUSE-RU-2024:3406-1 Rating: moderate References: * jsc#SLE-18626 Affected Products: * Development Tools Module 15-SP5 * Development Tools Module 15-SP6 * openSUSE Leap 15.5 * openSUSE Leap 15.6 * SUSE Linux Enterprise Desktop 15 SP5 * SUSE Linux Enterprise Desktop 15 SP6 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise Real Time 15 SP5 * SUSE Linux Enterprise Real Time 15 SP6 * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP5 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 An update that contains one feature can now be installed. ## Description: This update for rust, rust1.81 fixes the following issues: Changes in rust1.81: * Resolve wasm32-wasi build issues # Version 1.81.0 (2024-09-05) ## Language * Abort on uncaught panics in `extern "C"` functions. * Fix ambiguous cases of multiple `&` in elided self lifetimes. * Stabilize `#[expect]` for lints (RFC 2383), like `#[allow]` with a warning if the lint is _not_ fulfilled. * Change method resolution to constrain hidden types instead of rejecting method candidates. * Bump `elided_lifetimes_in_associated_constant` to deny. * `offset_from`: always allow pointers to point to the same address. * Allow constraining opaque types during subtyping in the trait system. * Allow constraining opaque types during various unsizing casts. * Deny keyword lifetimes pre-expansion. ## Compiler * Make casts of pointers to trait objects stricter. * Check alias args for well-formedness even if they have escaping bound vars. * Deprecate no-op codegen option `-Cinline-threshold=...`. * Re-implement a type-size based limit. * Properly account for alignment in `transmute` size checks. * Remove the `box_pointers` lint. * Ensure the interpreter checks bool/char for validity when they are used in a cast. * Improve coverage instrumentation for functions containing nested items. * Target changes: * Add Tier 3 `no_std` Xtensa targets: `xtensa-esp32-none-elf`, `xtensa- esp32s2-none-elf`, `xtensa-esp32s3-none-elf` * Add Tier 3 `std` Xtensa targets: `xtensa-esp32-espidf`, `xtensa- esp32s2-espidf`, `xtensa-esp32s3-espidf` * Add Tier 3 i686 Redox OS target: `i686-unknown-redox` * Promote `arm64ec-pc-windows-msvc` to Tier 2. * Promote `loongarch64-unknown-linux-musl` to Tier 2 with host tools. * Enable full tools and profiler for LoongArch Linux targets. * Unconditionally warn on usage of `wasm32-wasi`. (see compatibility note below) * Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. ## Libraries * Split core's `PanicInfo` and std's `PanicInfo`. (see compatibility note below) * Generalize `{Rc,Arc}::make_mut()` to unsized types. * Replace sort implementations with stable `driftsort` and unstable `ipnsort`. All `slice::sort*` and `slice::select_nth*` methods are expected to see significant performance improvements. See the research project https://github.com/Voultapher/sort-research-rs for more details. * Document behavior of `create_dir_all` with respect to empty paths. * Fix interleaved output in the default panic hook when multiple threads panic simultaneously. ## Stabilized APIs * `core::error` https://doc.rust-lang.org/stable/core/error/index.html * `hint::assert_unchecked` https://doc.rust- lang.org/stable/core/hint/fn.assert_unchecked.html * `fs::exists` https://doc.rust-lang.org/stable/std/fs/fn.exists.html * `AtomicBool::fetch_not` https://doc.rust- lang.org/stable/core/sync/atomic/struct.AtomicBool.html#method.fetch_not * `Duration::abs_diff` https://doc.rust- lang.org/stable/core/time/struct.Duration.html#method.abs_diff * `IoSlice::advance` https://doc.rust- lang.org/stable/std/io/struct.IoSlice.html#method.advance * `IoSlice::advance_slices` https://doc.rust- lang.org/stable/std/io/struct.IoSlice.html#method.advance_slices * `IoSliceMut::advance` https://doc.rust- lang.org/stable/std/io/struct.IoSliceMut.html#method.advance * `IoSliceMut::advance_slices` https://doc.rust- lang.org/stable/std/io/struct.IoSliceMut.html#method.advance_slices * `PanicHookInfo` https://doc.rust- lang.org/stable/std/panic/struct.PanicHookInfo.html * `PanicInfo::message` https://doc.rust- lang.org/stable/core/panic/struct.PanicInfo.html#method.message * `PanicMessage` https://doc.rust- lang.org/stable/core/panic/struct.PanicMessage.html These APIs are now stable in const contexts: * `char::from_u32_unchecked` https://doc.rust- lang.org/stable/core/char/fn.from_u32_unchecked.html (function) * `char::from_u32_unchecked` https://doc.rust- lang.org/stable/core/primitive.char.html#method.from_u32_unchecked (method) * `CStr::count_bytes` https://doc.rust- lang.org/stable/core/ffi/c_str/struct.CStr.html#method.count_bytes * `CStr::from_ptr` https://doc.rust- lang.org/stable/core/ffi/c_str/struct.CStr.html#method.from_ptr ## Cargo * Generated `.cargo_vcs_info.json` is always included, even when `--allow- dirty` is passed. * Disallow `package.license-file` and `package.readme` pointing to non- existent files during packaging. * Disallow passing `--release`/`--debug` flag along with the `--profile` flag. * Remove `lib.plugin` key support in `Cargo.toml`. Rust plugin support has been deprecated for four years and was removed in 1.75.0. ## Compatibility Notes * Usage of the `wasm32-wasi` target will now issue a compiler warning and request users switch to the `wasm32-wasip1` target instead. Both targets are the same, `wasm32-wasi` is only being renamed, and this change to the WASI target https://blog.rust-lang.org/2024/04/09/updates-to-rusts-wasi- targets.html is being done to enable removing `wasm32-wasi` in January 2025. * We have renamed `std::panic::PanicInfo` to `std::panic::PanicHookInfo`. The old name will continue to work as an alias, but will result in a deprecation warning starting in Rust 1.82.0. `core::panic::PanicInfo` will remain unchanged, however, as this is now a _different type_. The reason is that these types have different roles: `std::panic::PanicHookInfo` is the argument to the panic hook https://doc.rust- lang.org/stable/std/panic/fn.set_hook.html in std context (where panics can have an arbitrary payload), while `core::panic::PanicInfo` is the argument to the `#[panic_handler]` https://doc.rust-lang.org/nomicon/panic-handler.html in no_std context (where panics always carry a formatted _message_ ). Separating these types allows us to add more useful methods to these types, such as `std::panic::PanicHookInfo::payload_as_str()` and `core::panic::PanicInfo::message()`. * The new sort implementations may panic if a type's implementation of `Ord` https://doc.rust- lang.org/std/cmp/trait.Ord.html (or the given comparison function) does not implement a total order https://en.wikipedia.org/wiki/Total_order as the trait requires. `Ord`'s supertraits (`PartialOrd`, `Eq`, and `PartialEq`) must also be consistent. The previous implementations would not "notice" any problem, but the new implementations have a good chance of detecting inconsistencies, throwing a panic rather than returning knowingly unsorted data. * In very rare cases, a change in the internal evaluation order of the trait solver may result in new fatal overflow errors. ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * openSUSE Leap 15.5 zypper in -t patch SUSE-2024-3406=1 openSUSE-SLE-15.5-2024-3406=1 * openSUSE Leap 15.6 zypper in -t patch openSUSE-SLE-15.6-2024-3406=1 * Development Tools Module 15-SP5 zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP5-2024-3406=1 * Development Tools Module 15-SP6 zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP6-2024-3406=1 ## Package List: * openSUSE Leap 15.5 (aarch64 ppc64le s390x x86_64 i586) * cargo1.81-1.81.0-150500.11.3.1 * rust-1.81.0-150500.27.21.1 * cargo-1.81.0-150500.27.21.1 * rust1.81-debuginfo-1.81.0-150500.11.3.1 * cargo1.81-debuginfo-1.81.0-150500.11.3.1 * openSUSE Leap 15.5 (aarch64 ppc64le s390x x86_64 i586 nosrc) * rust1.81-1.81.0-150500.11.3.1 * openSUSE Leap 15.5 (noarch) * rust1.81-src-1.81.0-150500.11.3.1 * openSUSE Leap 15.5 (nosrc) * rust1.81-test-1.81.0-150500.11.3.2 * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64) * cargo1.81-1.81.0-150500.11.3.1 * rust-1.81.0-150500.27.21.1 * cargo-1.81.0-150500.27.21.1 * rust1.81-debuginfo-1.81.0-150500.11.3.1 * cargo1.81-debuginfo-1.81.0-150500.11.3.1 * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 nosrc) * rust1.81-1.81.0-150500.11.3.1 * openSUSE Leap 15.6 (noarch) * rust1.81-src-1.81.0-150500.11.3.1 * Development Tools Module 15-SP5 (aarch64 ppc64le s390x x86_64) * cargo1.81-1.81.0-150500.11.3.1 * rust-1.81.0-150500.27.21.1 * cargo-1.81.0-150500.27.21.1 * rust1.81-debuginfo-1.81.0-150500.11.3.1 * cargo1.81-debuginfo-1.81.0-150500.11.3.1 * Development Tools Module 15-SP5 (aarch64 ppc64le s390x x86_64 nosrc) * rust1.81-1.81.0-150500.11.3.1 * Development Tools Module 15-SP5 (noarch) * rust1.81-src-1.81.0-150500.11.3.1 * Development Tools Module 15-SP6 (aarch64 ppc64le s390x x86_64) * cargo1.81-1.81.0-150500.11.3.1 * rust-1.81.0-150500.27.21.1 * cargo-1.81.0-150500.27.21.1 * rust1.81-debuginfo-1.81.0-150500.11.3.1 * cargo1.81-debuginfo-1.81.0-150500.11.3.1 * Development Tools Module 15-SP6 (aarch64 ppc64le s390x x86_64 nosrc) * rust1.81-1.81.0-150500.11.3.1 * Development Tools Module 15-SP6 (noarch) * rust1.81-src-1.81.0-150500.11.3.1 ## References: * https://jira.suse.com/browse/SLE-18626