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Message-ID: <3E1D5A7B.6050309@wanadoo.nl>
Date: Thu, 09 Jan 2003 12:18:19 +0100
From: Maas-Maarten Zeeman <maas@wanadoo.nl>
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To: caml-list@inria.fr
Subject: [Caml-list] possible camlp4 problem/bug with literal booleans in expr quotations.
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Hi,

I'm experimenting with camlp4 and found this problem.

file: forever.ml

   #load "q_MLast.cmo";;
   #load "pa_extend.cmo";;

   open Pcaml;;

   EXTEND
     expr: LEVEL "expr1"
       [ [ "forever"; body=expr ->
              <:expr< while true do { $body$ } >> ] ];
   END;;

file: bar.ml

   let _ = forever print_string "0";

compilation:

   $ ocamlc -pp camlp4o -I +camlp4 -c forever.ml
   $ ocamlc -pp "camlp4o ./forever.cmo" bar.ml
   File "bar.ml", line 1, characters 8-33:
   Unbound value true

But when you substitute 1=1 for true this works as expected. Can true 
not be used as literal in expr quotations?

Thanks,

Maas


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