private selective import not so private ?

[BBasile via Digitalmars-d-learn]

While trying to get why some call to memmove without the right 
import didn't lead to a compilation failure i've found that 
imported symbols are not private ! Is that a bug ? The specs 
don't say that a selective import is public !

-- other.d --
module other;
private import core.stdc.string: memmove;
-------------

-- main.d --
module main;
import other;
void main()
{
     void* a,b;
     memmove(a,b,0);
}
------------

command `dmd main.d other.d: ok compiles without error.
win32, tested with latest beta, and 2 previous versions.