[Bug c++/29545] New: error when mixing virtual and non virtual increment operators

["raphael dot ribas at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

an error occur when mixing non virtual post increment operator
with virtual pre increment operator

$ cat test.cpp

struct A {
        const A& operator ++ (int) { return *this; }
        virtual const A& operator++() = 0;
};

struct B : public A {
        virtual const A& operator++() { return *this; }
};

int main(void) {
        B teste;
        teste++;
        return 0;
}

$ g++-4.1 test.cpp
test.cpp: In function 'int main()':
test.cpp:12: error: no 'operator++(int)' declared for postfix '++', trying
prefix operator instead
$

and if I remove pre increment operator it compiles ok

$ cat test.cpp

struct A {
        const A& operator ++ (int) { return *this; }
        //virtual const A& operator++() = 0;
};

struct B : public A {
        //virtual const A& operator++() { return *this; }
};

int main(void) {
        B teste;
        teste++;
        return 0;
}

$ g++-4.1 test.cpp
$


-- 
           Summary: error when mixing virtual and non virtual increment
                    operators
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: raphael dot ribas at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29545