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v30.0.0: Release Wasmtime 30.0.0 (#10250)
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· 55 commits to main since this release
v30.0.0
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30.0.0

Released 2025-02-20.

Added

  • New wasmtime-wasi-io crate provides a #![no_std] wasi:io implementation,
    factored out of wasmtime-wasi. Users of wasmtime-wasi don't have to
    depend on this new crate.
    #10036

  • Wasmtime's interpreter, Pulley, is now complete and has been listed as
    tier 2.
    #9897
    #9884
    #9943
    #9944
    #9983
    #9966
    #9935
    #10034
    #10057
    #10095

  • Wasmtime's CI now checks that the repository builds for aarch64-apple-ios.
    Note that no tests are run for this target, so it's still tier 3.
    #9888

  • Winch's support for AArch64 and simd on x64 have continued to progress
    well. Winch additionally now fully supports the threads WebAssembly
    proposal.
    #9889
    #9970
    #9950
    #9987
    #9990
    #9959
    #10008
    #10028
    #10029
    #10023
    #10042
    #10050
    #10039
    #10082
    #10092
    #10109
    #10148
    #10147

  • The memory64 WebAssembly feature is now enabled by default. This WebAssembly
    proposal is now considered a tier 1 feature.
    #9937
    #10159

  • Wasmtime's full test suite and CI now includes 32-bit platforms such as x86
    and armv7 Linux. These platforms have been added to tier 3 status and use
    Pulley as their execution backend.
    #10025

  • Initial experimental support for WASIp3 and async features of the Component
    Model have started to land. These features are not yet ready for
    general-purpose use.
    #10044
    #10047
    #10083
    #10103

  • The wasmtime CLI now supports using a TOML configuration file via --config
    in addition to CLI options.
    #9811
    #10132

  • Initial support for a new assembler on x64 has been added.
    #10110
    #10178

Changed

  • wasmtime-wasi split the WasiView trait into IoView and WasiView, and
    wasmtime-wasi-http re-uses IoView in WasiHttpView. Details on porting
    for embedders in PR.
    #10016

  • wasmtime-wasi renamed some exported types and traits. Embedders which use
    Pollable, InputStream, OutputStream, Subscribe, HostInputStream,
    HostOutputStream, PollableFuture, or ClosureFuture from that crate
    will need to rename those imports to their new names, describe in PR.
    #10036

  • Components using a 64-bit linear memory should never have worked before, but
    they're now rejected earlier in the validation process.
    #9952

  • Module validation is now deterministic in the face of multiple errors.
    #9947

  • Wasmtime's minimum supported version of Rust is now 1.82.0.
    #9956

  • Cranelift will now deduplicate trap[n]z instructions.
    #10004

  • The --emit-clif option to wasmtime compile now emits post-optimization
    CLIF.
    #10011

  • The signals-based-traps Cargo feature has been removed in favor of
    auto-detection of available features based on the #[cfg] directives
    available for the target platform.
    #9941

  • The async_stack_zeroing configuration knob now covers all stack allocations,
    not just those from the pooling allocator.
    #10027

  • Wasmtime should work-by-default on more platforms, even those where Cranelift
    has no support for the architecture. This is done by ensuring some
    architecture and platform-specific bits are removed on unknown platforms (and
    Pulley is used instead).
    #10107

  • Wasmtime now compiles on platforms missing 64-bit atomics.
    #10134

Fixed

  • Fixed a missing case for Ref::matches_ty should return true.
    #9985

  • A bug with using the single_pass register allocation algorithm on x64/s390x
    has been fixed by refactoring how branches are represented.
    #10086
    #10087

  • A bug with argument extensions on riscv64 has been fixed.
    #10069

  • The PartialEq implementation for RegisteredType has been fixed.
    #10091

  • The output of component::bindgen! now works with #![no_std] crates.
    #10105

  • Fix wasmtime wast when combined with --fuel.
    #10121

  • The wat feature of the C API is now plumbed correctly in a few more
    locations.
    #10124

  • Spurious wake-ups in blocking_* methods of InputStream and OutputStream
    have been fixed.
    #10113

Assets 40
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