Interop broken on Linux?

[guregu]

Interop broken on Linux?

[guregu]

Hmm, looks like there's a 1MB (maybe 2MB?) stack size limit by default: bytecodealliance/wasmtime#900
This would explain a lot... the Trealla wasm build uses a 8MB stack.
There's no way to set this size yet for wasmtime-go so I will add it then fix this.
Pretty surprising it doesn't read the stack size from the binary.

[guregu]

This should take care of it: bytecodealliance/wasmtime-go#180

[guregu]

Hmm... it looks like it's more complex than I thought.
wasmtime divides the stack space every time a guest -> host -> guest (reentrant?) call happens
Even with the larger stack, if there's more than 2 or so reentrant queries happening the stack just becomes too small.
This can be worked around by calling Clone() on the instance passed to the native predicate, but incurs an overhead.
It might be possible to avoid this with a more complex locking system but probably not worth it.