> > But when designing a general utility, for all kinds of programs to use, > > it is inappropriate to say "storing null elements is not useful". > > I'm afraid we'll have to disagree here.
In some of my uses of the gl_list module, the element is in fact a small integer, cast to an 'uintptr_t' and then further cast to a 'const void *'. If the API would forbid storing a NULL pointer, my specialized container type would need a workaround for storing the integer value 0. Bruno
