lars@island.COM (Lars Nyman) (02/05/91)
The following code using a virtual base class causes CFront to complain
(Sun C++ 2.0, and MPW C++ 3.1, both which are based on CFront 2.0).
IS this indeed a CFront bug, and does anybody know if it is fixed/will be fixed
in later versions of CFront (> 2.0) ?
// -------------------------------------------------
//#define INHERIT public
#define INHERIT virtual public
class TOne
{
public:
virtual void foo() {};
};
class TTwo : virtual public TOne
{
public:
void foo() {};
};
class TThree : INHERIT TTwo {};
class TFour : INHERIT TThree {};
class TFive : public TFour {};
class TSix : public TFive {};
class TSeven : public TSix
{
public:
void bar() { foo(); };
};
//----------------------------------
CC foo-bug.cc
CC foo-bug.cc:
"foo-bug.cc", line 24: error: ambiguous TTwo::foo() and TOne::foo() (different s
ub-objects)
"foo-bug.cc", line 24: error: ambiguous TTwo::foo() and TOne::foo() (different s
ub-objects)
"foo-bug.cc", line 24: error: ambiguous TTwo::foo() and TOne::foo() (different s
ub-objects)
3 errorsrae@gpu.utcs.toronto.edu (Reid Ellis) (02/08/91)
Lars Nyman <lars@island.COM> writes: >The following code using a virtual base class causes CFront to complain >(Sun C++ 2.0, and MPW C++ 3.1, both which are based on CFront 2.0). > >IS this indeed a CFront bug, and does anybody know if it is fixed/will be fixed >in later versions of CFront (> 2.0) ? It is a bug. It isn't fixed. I, too, bashed my head against this one for several days. As a result I now have a SADE procedure to print out virtual method tables, complete with [mangled] method names. Anyone want it? Reid -- Reid Ellis 176 Brookbanks Drive, Toronto ON, M3A 2T5 Canada rae@utcs.toronto.edu || rae%alias@csri.toronto.edu CDA0610@applelink.apple.com || +1 416 446 1644