GNU & Borland Pure Virtual Functions.

[Jason McDonald]

Hi,

Why would GNU report an error with this code and Borland Builder would not?

#include <iostream.h>
#include <string.h>

class A{
public:
    char temp[10];
    virtual void from(char *s) { cout << "FROM A";}
    virtual void blank(void) = 0;
    virtual ~A(){};
};

class B: public A{
public:

    virtual void from(char *s) { strcpy(temp,s);}
    virtual void blank(void) { cout << "BLANK B";}
    virtual ~B(){};
};

B doingB(char *s)
{
    B b;
    b.from(s);
    return b;
}

void printit(A &a)
{
    cout << a.temp << " YADA\n";
}

int main(void)
{
    printit(doingB("THIS"));
    return 0;
}

GNU error:
>a.c: In function `int main ()':
>a.c:34: could not convert `doingB()' to `A &'
>a.c:28: in passing argument 1 of `printit (A &)'


Thanks for your help.

Jason.