Blog post about exception handling · wasmtime

Stream: wasmtime

Topic: Blog post about exception handling

Chris Fallin (Nov 06 2025 at 17:57):

I've just posted a fairly in-depth blog post about the work to add Wasm exception handling to Wasmtime (and underlying support in Cranelift), with lots of background about exception-handling in general and how it works in Wasm bytecode. Take a look if you're curious!

BA blog: here
Cross-posted to personal blog: here

Exceptions in Cranelift and Wasmtime

This is a blog post outlining the odyssey I recently took to implementthe Wasm exception-handlingproposal inWasmtime, the open-sourceWebAssembly engine for which I’m a coreteam member/maintainer, and its Craneliftcompiler backend.

pyrmont (Nov 07 2025 at 06:54):

Thanks for this! I was able to get the Janet programming language's runtime to compile and start the REPL :D
screenshot.png

The Janet Programming Language

Janet is a functional and imperative programming language. It runs on Windows, Linux, macOS, FreeBSD and *nix.

Chris Fallin (Nov 07 2025 at 17:27):

Nice!

Last updated: Dec 06 2025 at 06:05 UTC