On Mar 25, 2009, at 3:55 PM, Peng Zang wrote:

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> Hi, camlp4 seems to break parsing of object duplication on 3.11.   
> Can anyone
> replicate this problem?  Is this an known issue?  A quick google  
> search did
> not reveal anything..

Yeah. I reported the bug here:

http://caml.inria.fr/mantis/view.php?id=4673

Andres

>
> Peng
>
>
>          Objective Caml version 3.11.0
>
>  # #use "topfind";;
>  Findlib has been successfully loaded. Additional directives:
>    #require "package";;      to load a package
>    #list;;                   to list the available packages
>    #camlp4o;;                to load camlp4 (standard syntax)
>    #camlp4r;;                to load camlp4 (revised syntax)
>    #predicates "p,q,...";;   to set these predicates
>    Topfind.reset();;         to force that packages will be reloaded
>    #thread;;                 to enable threads
>
>  # #camlp4o;;
>  /home/peng/app-data/godi-3.11/lib/ocaml/std-lib/dynlink.cma: loaded
>  /home/peng/app-data/godi-3.11/lib/ocaml/std-lib/camlp4: added to  
> search path
>  /home/peng/app-data/godi-3.11/lib/ocaml/std-lib/camlp4/camlp4o.cma:  
> loaded
>          Camlp4 Parsing version 3.11.0
>
>  # class functional_point x y = object
>      val x = x
>      val y = y
>      method get_x = x
>      method get_y = y
>      method move dx dy = {< x = x + dx; y = y + dy >}
>    end;;
>            Characters 138-144:
>      method move dx dy = {< x = x + dx; y = y + dy >}
>                                 ^^^^^^
>  Warning S: this expression should have type unit.
>  Characters 146-156:
>      method move dx dy = {< x = x + dx; y = y + dy >}
>                                         ^^^^^^^^^^
>  Error: This expression has type bool but is here used with type int
>  #
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