mecherrmap__pairarray_getaddr
newvalp = mecherrmap__pairarray_getaddr(arr, idx);
return *mecherrmap__pairarray_getaddr(arr, idx);
pair = mecherrmap__pairarray_getaddr (&m->a, i);
pair = mecherrmap__pairarray_getaddr (&m->a, i);
pair = mecherrmap__pairarray_getaddr (&m->a, i);
pair = mecherrmap__pairarray_getaddr (&m->a, i);