I have a setup like
class A {
virtual void func1()=0;
.....
}
class B {
virtual void func2()=0;
....
}
class C: public A, public B {
virtual void func1()=0;
virtual void func2()=0;
....
}

where below class C is "bidir_chan"

g++ -O3 -Wall -I. -I.. -I../../../include -L. -L.. -L../../../lib-linux
-o run.x bidir_chan.o addr_generator.o main.o -lsystemc -lm 2>&1 |
c++filt
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x20): undefined reference to `bidir_chan::~bidir_chan()'
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x24): undefined reference to `bidir_chan::~bidir_chan()'
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x50): undefined reference to `non-virtual thunk to
bidir_chan::~bidir_chan()'
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x54): undefined reference to `non-virtual thunk to
bidir_chan::~bidir_chan()'
collect2: ld returned 1 exit status
what is this THUNK thing? I am using cygwin g++ ver 3.4.4-2

thanks for any hep,
Neo

On Dec 6, 11:14 am, "Neo" <zingafri...@yahoo.comwrote:

I have a setup like
class A {
virtual void func1()=0;
....}
>
>class B {
virtual void func2()=0;
...}
>
>class C: public A, public B {
virtual void func1()=0;
virtual void func2()=0;
...
>
}

where below class C is "bidir_chan"

Are you trying to instanciate C? You can't instanciate classes with
pure virtual functions. Either remove the '=0' from the method
declarations in class C and later provide a definition, or create a new
class D deriving from C which implements func1() and func2().

--
Erik Wikström

"""Neo ÐÉÓÁÌ(Á):
"""

I have a setup like
class A {
virtual void func1()=0;
....
}
class B {
virtual void func2()=0;
...
}
class C: public A, public B {
virtual void func1()=0;
virtual void func2()=0;
...
}
>
where below class C is "bidir_chan"
>
g++ -O3 -Wall -I. -I.. -I../../../include -L. -L.. -L../../../lib-linux
-o run.x bidir_chan.o addr_generator.o main.o -lsystemc -lm 2>&1 |
c++filt
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x20): undefined reference to `bidir_chan::~bidir_chan()'
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x24): undefined reference to `bidir_chan::~bidir_chan()'
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x50): undefined reference to `non-virtual thunk to
bidir_chan::~bidir_chan()'
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x54): undefined reference to `non-virtual thunk to
bidir_chan::~bidir_chan()'
collect2: ld returned 1 exit status
what is this THUNK thing? I am using cygwin g++ ver 3.4.4-2
>
thanks for any hep,
Neo

http://magegame.ru/?rf=626f6764616e

"""Neo ÐÉÓÁÌ(Á):
"""

I have a setup like
class A {
virtual void func1()=0;
....
}
class B {
virtual void func2()=0;
...
}
class C: public A, public B {
virtual void func1()=0;
virtual void func2()=0;
...
}
>
where below class C is "bidir_chan"
>
g++ -O3 -Wall -I. -I.. -I../../../include -L. -L.. -L../../../lib-linux
-o run.x bidir_chan.o addr_generator.o main.o -lsystemc -lm 2>&1 |
c++filt
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x20): undefined reference to `bidir_chan::~bidir_chan()'
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x24): undefined reference to `bidir_chan::~bidir_chan()'
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x50): undefined reference to `non-virtual thunk to
bidir_chan::~bidir_chan()'
bidir_chan.o:bidir_chan.cpp:(.rdata$_ZTV10bidir_ch an[vtable for
bidir_chan]+0x54): undefined reference to `non-virtual thunk to
bidir_chan::~bidir_chan()'
collect2: ld returned 1 exit status
what is this THUNK thing? I am using cygwin g++ ver 3.4.4-2
>
thanks for any hep,
Neo

http://magegame.ru/?rf=626f6764616e

"bogdan" <bogdan@birulevo.netwrote in message
news:1165404422.778098.278060@16g2000cwy.googlegro ups.com...

>
>
http://magegame.ru/?rf=626f6764616e
>

If you've got something to say, say it. I'm not about to click on an
unknown link.

Are you trying to instanciate C? You can't instanciate classes with

pure virtual functions. Either remove the '=0' from the method
declarations in class C and later provide a definition, or create a new
class D deriving from C which implements func1() and func2().
>
--
Erik Wikström

I am sorry, there is a correction, I have another class D(which is
bidir_chan) which implements those functions of class C and is inturn
instantiated.

"Neo" <zingafriend@yahoo.comwrote in message
news:1165459429.092924.64470@79g2000cws.googlegrou ps.com...

Are you trying to instanciate C? You can't instanciate classes with
pure virtual functions. Either remove the '=0' from the method
declarations in class C and later provide a definition, or create a new
class D deriving from C which implements func1() and func2().
>
--
Erik Wikstrvm

I am sorry, there is a correction, I have another class D(which is
bidir_chan) which implements those functions of class C and is inturn
instantiated.

If you're still having a problem, then show the actual code you're referring
to. We can't help you resolve the problem if we're only going by a vague
description.

-Howard