GC and Exceptions in Wasmtime
Summary
The article announces that Wasmtime 47 enables Wasm GC and exceptions by default and details the architectural decisions behind Wasmtime's GC implementation, including a Cheney-style semi-space collector and the use of WebAssembly linear memories for the GC heap. It also covers the Wasm GC and exceptions proposals, fuzzing efforts, performance notes, and future integration plans with the component model.