(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code DuplicateFunction)
  (message "compiler-known callable `__glagol_num_f64_to_string` is reserved")
  (file "<fixture>")
  (span
    (bytes 16 79)
    (range 4 1 5 9)
  )
)