[paugier]

This is a funny bug:

def mul(a: i64, b: i64) -> tuple[i64, i64]:
    return a * b, a

gives for WASI

E               wasmtime._trap.Trap: error while executing at wasm backtrace:
E                   0:   0x22b0 - test.wasm!signature_mismatch:__multi3
E                   1:  0x21106 - test.wasm!spy_test$mul
E               note: using the `WASMTIME_BACKTRACE_DETAILS=1` environment variable may show more debugging information
E               
E               Caused by:
E                   wasm trap: wasm `unreachable` instruction executed

Claude told me that this is an issue with the flags given to the linker. I don't know if this is the correct fix.