Listing 1 compiles fine:
class smallclass {
public:
int uu;
smallclass(void) : uu(1) { }
};
class largeclass : public smallclass {
public:
int *uup;
void test(void) { uup = &(smallclass::uu); }
};
int main () {
largeclass a;
a.test();
}
Listing 2 fails:
template <class E> class smallclass {
public:
E uu;
smallclass(void) : uu(1) { }
}; // class smallclass
template <class E> class largeclass : public smallclass<E> {
public:
E *uup;
void test(void) { uup = &(uu); }
};
int main () {
largeclass<int> a;
a.test();
}
The error on compile on both gcc-4.0.1 and 3.4.1 is:
'uu' was not declared in this scope or `uu' undeclared
If one tries to fix it like this:
void test(void) { uup = &(smallclass<E>::uu); }
the error on both gcc-4.0.1 and 3.4.1 becomes:
error: cannot convert 'int smallclass<int>::*' to 'int*' in assignment
All code compiles fine on:
- Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.762 for
80x86 (Visual Studio 2005)
- cxx (v6.5 su Tru64/alpha)
- aCC (vA.5.55 per HP-UX/Itanium)
- intel cc 9.0
- gcc 3.2 and 3.3
- Comeau C++ 4.3.3
--
Summary: template class derived from template class does not
access base class' members
Product: gcc
Version: 4.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: paolo dot greppi at tiscali dot it
GCC build triplet: i686-pc-cygwin
GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-cygwin
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30657
