[Bug c++/15894] New: Template inheritance problem with base class member

["marzullo at la-defense dot oilfield dot slb dot com" <gcc-bugzilla at gcc dot gnu dot org>]

When creating template inheritance (see program), we can not access base 
template member while in the derivated template.



#include <iostream>
                                                                               
                                                                                 
template <typename _type>
class MyClass
{
        public:
                _type   m_value;
};
                                                                               
                                                                                 
                                                                               
                                                                                 
                                                                               
                                                                                 
template <typename _type>
class AnotherClass      :       public  MyClass<_type>
{
        public:
                void    print( void ) const
                {
                        std::cerr << "m_value = "  << m_value << '\n';
                }
};
                                                                               
                                                                                 
                                                                               
                                                                                 
                                                                               
                                                                                 
int
main( void )
{
        AnotherClass<bool>      a;
                                                                               
                                                                                 
        std::cerr << "sizeof(wchar_t) " << sizeof(wchar_t) << '\n';
        a.print();
        return 0;
}





Reading specs from /opt/gcc/3.4.0/lib/gcc/i686-pc-linux-gnu/3.4.0/specs
Configured with: ../../SOURCES/gcc-3.4.0/configure --prefix=/opt/gcc/3.4.0
--enable-threads=posix --enable-languages=c++
Thread model: posix
gcc version 3.4.0
 /opt/gcc/3.4.0/libexec/gcc/i686-pc-linux-gnu/3.4.0/cc1plus -E -quiet -v
-D_GNU_SOURCE template.cpp -mtune=pentiumpro -o template.ii
ignoring nonexistent directory
"/opt/gcc/3.4.0/lib/gcc/i686-pc-linux-gnu/3.4.0/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /opt/gcc/3.4.0/lib/gcc/i686-pc-linux-gnu/3.4.0/../../../../include/c++/3.4.0
 /opt/gcc/3.4.0/lib/gcc/i686-pc-linux-gnu/3.4.0/../../../../include/c++/3.4.0/i686-pc-linux-gnu
 /opt/gcc/3.4.0/lib/gcc/i686-pc-linux-gnu/3.4.0/../../../../include/c++/3.4.0/backward
 /usr/local/include
 /opt/gcc/3.4.0/include
 /opt/gcc/3.4.0/lib/gcc/i686-pc-linux-gnu/3.4.0/include
 /usr/include
End of search list.
 /opt/gcc/3.4.0/libexec/gcc/i686-pc-linux-gnu/3.4.0/cc1plus -fpreprocessed
template.ii -quiet -dumpbase template.cpp -mtune=pentiumpro -auxbase template
-version -o template.s
GNU C++ version 3.4.0 (i686-pc-linux-gnu)
        compiled by GNU C version 3.4.0.
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64183
template.cpp: In member function `void AnotherClass<_type>::print() const':
template.cpp:18: error: `m_value' undeclared (first use this function)
template.cpp:18: error: (Each undeclared identifier is reported only once for
each function it appears in.)



Regards
Laurent Marzullo

-- 
           Summary: Template inheritance problem with base class member
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: marzullo at la-defense dot oilfield dot slb dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i386-redhat-linux
  GCC host triplet: i386-redhat-linux
GCC target triplet: i386-redhat-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15894