;;; TOOL: wat2wasm
;;; ARGS: --enable-sign-extension
(module
  (func
    i32.const 0
    i32.extend8_s
    drop

    i32.const 0
    i32.extend16_s
    drop

    i64.const 0
    i64.extend8_s
    drop

    i64.const 0
    i64.extend16_s
    drop

    i64.const 0
    i64.extend32_s
    drop))