[James_K]

If you are interested in multi-byte access to GCed arrays, something similar can already be accomplished. You can hold the array data in Wasm linear memory, then have an object that wraps a pointer to it, and using JS code, associate a finalizer with that object that frees the related section of linear memory. It's essentially how FFI memory is handled in most native GCed languages.

[spankalee]

I considered that, but it requires more pointer indirection and I'm supporting WASI as a first class target, so won't always have access to JS finalizers. I'm going with copying as simpler for now, praying that multi-byte access lands by the time my language is viable.