GDB on AIX 4.3.3 and C++ with native xlC

[Alf E. Helseth]

Hi !

I am running GDB 5.0 on a IBM AIX 4.3.3 and have C++ code compiled with
the native VisualAge 5.0 development environment using the xlC compiler
to compile C++ code.

I run into problems displaying member variables etc in C++ classes, it
seems somewhat disoriented by the  'this'-pointer. 

A small sample:
class CMyClass {
public:
    CMyClass() {
        m_Mem1 = 0;
    }
    ~CMyClass() { m_Mem1 = -1; }
    
    void Func1()
        {
            int some_var = 1;
        }

    void Func2(int in) {
        m_Mem1 = in;
    } 
public:
    int m_Mem1;
};


int main (int argc, char **argv)
{
    CMyClass myclass;

    myclass.Func2(2);
        
    return 0;
}           


The GDB output:

0x10001170 in main (argc=1, argv=0x2ff21e10) at main.C:31
(gdb) n
(gdb) s
CMyClass::Func2 (this=0x2ff20cec, in=2) at main.C:20
(gdb) p this
$1 = (struct <unknown> *) 0x2ff20cec
(gdb) p in
$2 = 2
(gdb) p m_mem1
Internal error: `this' is not an aggregate
(gdb) p *this
$3 = <incomplete type>
(gdb) 


Does'nt the GDB work with native AIX compiler ?
Debugging C-code works all OK.

Any hints ?

-Alf