compiler error in spite of correct code

[arno]

Hi all,
if I compile the small example below without defining
"VC6_STUPID_BEHAVIOUR" I get the following compiler error:
error C2614: 'MyCString' : illegal member initialization: 'string' is
not a base or member

can somebody say me why??? In my opinion it should work in both
variants. On Solaris and HP-UX it works fine.

I have to work with MS VC++ 6.0 SP6

best regards
Arno

// vvvvvvvvvvvvvvv snipp vvvvvvvvvvvvvvvv
#include <string>
#include <iostream>

#ifdef VC6_STUPID_BEHAVIOUR
using std::string;
# define std_string string
#else
# define std_string std::string
#endif

class MyCString
: public std_string
{
public:
MyCString(const char *s_);
: std_string(s_)
{
std::cout << "\"" << *this << "\"" <<
std::endl;
};
};

int main (int argc, char *argv[])
{
MyCString s(argv[0]);
return 0;
}
// ^^^^^^^^^^^^ snipp ^^^^^^^^^^^^

 

[John Harrison]

Hi all,
if I compile the small example below without defining
"VC6_STUPID_BEHAVIOUR" I get the following compiler error:
error C2614: 'MyCString' : illegal member initialization: 'string' is
not a base or member

can somebody say me why??? In my opinion it should work in both
variants. On Solaris and HP-UX it works fine.

I have to work with MS VC++ 6.0 SP6

best regards
Arno

VC++ 6 has many bugs, this is one of them.

john

 

[Ivan Vecerina]

....

can somebody say me why??? In my opinion it should work in both
variants. On Solaris and HP-UX it works fine.

I have to work with MS VC++ 6.0 SP6 ....
class MyCString
: public std_string
{
public:
MyCString(const char *s_);
: std_string(s_)

I guess this is where VC6 chokes on std::string.
Maybe a simple typedef within your class will do as a workaround:
typedef std::string base_string;
MyCString(const char *s_);
: base_string(s_)



This said: you shall not derive from std::string.

Trust me, there always is a better way
(containment or free functions).


regards,
Ivan

 

[Karthik Kumar]

Hi all,
if I compile the small example below without defining
"VC6_STUPID_BEHAVIOUR" I get the following compiler error:
error C2614: 'MyCString' : illegal member initialization: 'string' is
not a base or member

can somebody say me why??? In my opinion it should work in both
variants. On Solaris and HP-UX it works fine.

I have to work with MS VC++ 6.0 SP6

best regards
Arno

// vvvvvvvvvvvvvvv snipp vvvvvvvvvvvvvvvv
#include <string>
#include <iostream>

#ifdef VC6_STUPID_BEHAVIOUR
using std::string;
# define std_string string
#else
# define std_string std::string
#endif

class MyCString
: public std_string
{
public:
MyCString(const char *s_);

Is the semilcolon (at the end of the previous line) misplaced?

 

[arno]

:

Is the semilcolon (at the end of the previous line) misplaced?

Yes it is, but this is only a copy/paste error.

arno

 

[arno]

VC++ 6 has many bugs, this is one of them.

hi john,
this means it works how exspected in VC 7.x?

arno

 

[John Harrison]

hi john,
this means it works how exspected in VC 7.x?

I believe so.

john