ACLIC and privacy of classes

Dear ROOTers,

today I've come across an interesting feature of ACLIC (or ROOT?): It seems to break the privacy of classes (and I remember very faintly that I've read about this somewhere). Take the following code, where a sub-class (wrongly) tries to access the parent class' private member:

#include <iostream>

class A {
private:

   int fa;
};

class B : public A {
public:

   B() { fa=1; std::cout << fa << std::endl; } };

As expected, this will cause a compilation error, when compiled directly with g++:

[0] mnemosyne:~/analysis/selector> g++ test2.cc

test2.cc: In constructor ‘B::B()’:
test2.cc:5: error: ‘int A::fa’ is private
test2.cc:10: error: within this context
test2.cc:5: error: ‘int A::fa’ is private
test2.cc:10: error: within this context

But with v5.30.03 ROOT/ACLIC the broken code "just works":

[0] mnemosyne:~/analysis/selector> root
root [0] .L test2.cc+
Info in <TUnixSystem::ACLiC>: creating shared library /nfs/hicran/project/compass/analysis/tnagel/analysis/selector/./test2_cc.so root [1] B b;
1
root [2]

To my mind, this behaviour raises two questions: Is it a bug or a feature? Can it be fixed or disabled?

Thank you and kind regards,
Thiemo

-- 
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| Dipl.-Phys. Thiemo Nagel          |                          |

| Technische Universitaet Muenchen  | Room    PH1 3276         |

| Physik-Department E18             |                          |

| James-Franck-Strasse              | Phone  +49 89 289-12379  |

| D-85747 Garching                  | Fax    +49 89 289-12570  |

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