../../pfc/list.h(208) : error C2440: 'initializing' : cannot convert from 'void *const ' to 'void *& '

bool bsearch_range(int (__cdecl *compare )(T elem1, T elem2 ),T item,int * index,int * count) const
{
  int max = get_count();
  int min = 0;
  int ptr;
  while(min<max)
  {
   ptr = min + (max-min) / 2; 
   T& test = buffer[ptr];
   int result = compare(test,item);
   if (result<0) min = ptr + 1;
   else if (result>0) max = ptr;
   else
   {
    int num = 1;
    while(ptr>0 && !compare(buffer[ptr-1],item)) {ptr--;num++;}
    while(ptr+num<get_count() && !compare(buffer[ptr+num],item)) num++;
    if (index) *index = ptr;
    if (count) *count = num;
    return 1;
   }
  }
  if (index) *index = min;
  return 0;
}