   0  int_signext %i0, $4 -> %i0
   4  residual_call_ir_i $<* fn ccall_ftruncate__INT_Signed>, I[%i0, %i1], R[], <CallDescr(ii) EF=7> -> %i0
  13  -live- %i0
  13  inline_call_ir_i <JitCode 'handle_posix_error__ftruncate'>, I[%i0], R[$<* struct rpy_string>] -> %i0
  21  -live-
  21  void_return
