message: Rename manually imported FFI.
diff: @@ -28,7 +28,7 @@ fn to_ptr<T: ToBytes>(t: T) -> (*const u8, usize, Vec<u8>) {
  mod malicious_ffi {
  // Potential attacker has available every FFI for himself
  extern "C" {
  - pub fn cl_call_contract(
  + pub fn casper_call_contract(
  contract_hash_ptr: *const u8,
  contract_hash_size: usize,
  entry_point_name_ptr: *const u8,
  @@ -56,7 +56,7 @@ pub fn my_call_contract(
  {
  let mut bytes_written = 0usize;
  let ret = unsafe {
  - malicious_ffi::cl_call_contract(
  + malicious_ffi::casper_call_contract(
  contract_hash_ptr,
  contract_hash_size,
  malicious_string.as_ptr(),
  