Wasmtime 32.0.0 download

32.0.0
Released 2025-04-21.
Added
- {Module,Component}::deserialize_raw can now be used to deserialize an
in-memory module while relying on external management of the memory.
#10321
- An initial implementation of wasi-tls has been added.
#10249
- The wasmtime CLI now supports hexadecimal integer CLI arguments.
#10360
- Cranelift now supports a log2_min_function_alignment flag.
#10391
- A new wasmtime objdump subcommand has been added to help explore and debug
*.cwasm files.
#10405
- Support for the pooling allocator has been added to the C API.
#10484
- Support for the guest profiler with the component model has been added.
#10507
Changed
- Cranelift MemFlags now has a can_move flag which restricts whether a load
or store can be moved.
#10340
- The .text size of Pulley *.cwasm files should be smaller with less
padding.
#10285
- The wasmtime serve subcommand now implements a graceful shutdown on ctrl-c.
#10394
- Stack maps used for GC are now stored in a serialized binary format that is
faster to deserialize.
#10404
- The aegraph implementation in Cranelift has been simplified to remove the
union-find and canonical eclass IDs.
#10471
- The store_list and load_list helpers have been specialized in components
for f32 and f64.
#9892
- Cranelift now removes block params on critical-edge blocks.
#10485
- The Linker::define_unknown_imports_as_default_values API now supports
defining defaults for more kinds of items.
#10500
- Wasmtime now requires Rust 1.84.0 to compile.
#10520
Fixed
- Winch compilation of extadd instructions has been fixed.
#10337
- Fix an issue with DRC collector's barriers.
#10371
- Loads on (ref null none) that can trap are now performed.
#10372
- Fix reference count management in AnyRef::from_raw.
#10374
- An issue with multi-value returns in Winch has been fixed.
#10370
- A panic at compile-time from an overflowing shift has been fixed when
targeting aarch64.
#10382
- The wasmtime serve command no longer panics when handle returns before
calling set.
#10387
- Winch compilation of replace_lane instructions with floats has been fixed.
#10393
- An invalid integer-shift optimization on vector types has been removed.
#10413
- The DWARF loclist to exprloc optimization has been fixed.
#10400
- Objects in the DRC collector are now transitively dec-ref's when collected.
#10401
- A bug with GC rec gropus and registration in an Engine has been fixed.
#10435
- A bug related to GC arrays of GC refs misreported their count of GC edges has
been fixed.
#10453
- A bug related to appropriately adding stack maps for all GC variables has been
fixed.
#10456
#10468
- A bug with array.fill has been fixed.
#10470
- GC structs are no longer reordered to optimize their size to fix subtyping.
#10463
- Panics related to exceptions and components being mixed has been fixed.
#10473
- Winch stack parameter alignment has been fixed.
#10513
- Rendering inline function frames in a trap backtrace has been fixed.
#10523