$ ocamlc -version
3.10.0

$ cat test.ml
if true then
  print_int (  (lxor) 1 3)

$ ocamldep -pp 'camlp4o pa_macro.cmo' test.ml
File "test.ml", line 2, characters 16-20:
Parse error: ")" or [expr] expected after "(" (in [expr])
Preprocessing error on file test.ml


Thanks

Matt