RE: [ROOT] rootcint problem

From: Philippe Canal (pcanal@fnal.gov)
Date: Fri Sep 13 2002 - 01:27:39 MEST

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Hi Roger,

Indeed it is a bug.  It seems that CINT does not yet handle this type of
arguments.

Cheers,
Philippe

-----Original Message-----
From: owner-roottalk@pcroot.cern.ch
[mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Roger Moore
Sent: Thursday, September 12, 2002 5:30 PM
To: roottalk@pcroot.cern.ch
Subject: [ROOT] rootcint problem


I've run into a problem with rootcint and template functions with ROOT
3.03/05. The problem exists when the template function uses a typename
defined inside the template argument. For example the function:

 template <class VALUE>
    LeCut<VALUE> operator<=(const VALUE&, const VALUE&);

works fine but the moment that I change this to:

 template <class VALUE>
    LeCut<VALUE> operator<=(const VALUE&, const VALUE::value_type &);

rootcint gets very unhappy and generates the errors:

Error: class,struct,union or type VALUE not defined  FILE:LeCut.hpp LINE:96
Error: class,struct,union or type VALUE not defined  FILE:LeCut.hpp LINE:96
Internal error: global function template arg type FILE:LeCut.hpp LINE:96

It seems that rootcint does not wait until the function template is
instantiated before trying to look up 'VALUE::value_type' and since it
obviously can't do this until it is instantiated, and VALUE is defined, it
produces an error.

I'm presuming that this is a bug?

Roger

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