I've been trying to streamline the error handling for my ocamlyacc-based
compiler, and have this exception defined in my parser.mly:

exception Undef_sym of string;

This is raised whenever the compiler encounters an undefined symbol.

The file that actually uses the compiler, compiler.ml does something like:

try
  let result = Parser.main Lexer.token lexbuf in
    ...
with
    Parser.Undef_sym x -> Printf.fprintf stderr "Undefined symbol %s" x

Unfortunately, compiling the compiler with this causes it to choke
saying that Parser.Undef_sym is not found.  It's not in the generated
parser.mli file, of course.  So apart from editing that (automatically
generated) file manually, how do I get ocamlyacc to put them there?

-- 
Rafael R. Sevilla <sevillar@team.ph.inter.net>   +63(2)   8177746 ext. 8311
Programmer, Inter.Net Philippines                +63(917) 4458925
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