[Bug c++/24680] Invalid template code accepted

["pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #13 from pinskia at gcc dot gnu dot org  2005-11-05 02:33 -------
Ok, here is a real testcase which shows that EDG gets it really wrong:
#include <stdio.h>


void resize(double&)
{
  printf("resize::double\n");
}
void resize(int&)
{
  printf("resize::int\n");
}



template <typename T>
struct List
{
    struct D { int size; };
    D *d;

    List &fill(const T &t, int size = -1);
};

template<>
struct List<int>::D
{
   double size;
};

template <typename T>
List<T> &List<T>::fill(const T &t, int size)
{
    resize(d->size);
    return *this;
}

int main(void)
{
  List<int> a;
  a.fill(1, 1);
  return 0;
}
-------

So you found a bug in EDG and not GCC.
The error which EDG front-end gives:

"ComeauTest.c", line 33: error: a reference of type "int &" (not
const-qualified)
          cannot be initialized with a value of type "double"
      resize(d->size);
             ^
          detected during instantiation of
                    "List<T> &List<T>::fill(const T &, int) [with T=int]" 

1 error detected in the compilation of "ComeauTest.c".

Which does not make sense at all since List<T>::D is type dependent and so is
d->size as shown above.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24680