GC and Exceptions in Wasmtime

Software Development, Web Development & Frontend, Web Browsers & Engines(bytecodealliance.org)view on HackerNews

WebAssemblyWasmtimegarbage collectionexceptionsruntimeWebAssembly languagestruct and array typessubtyping relationshipslinear memoriesfuzzingcollector bugscollector correctness

Author: phickey

Date: 7/20/2026

Article Summary:

The Bytecode Alliance has enabled the garbage collection and exceptions proposals in Wasmtime, a WebAssembly runtime, allowing for more efficient support for high-level languages and enabling efficient support for exceptions on WebAssembly.