is it a bug or what?

[collerblade via Digitalmars-d]

Dear D user, i have this code:

import core.sys.windows.windows;

real[] a;
while(1) {
   a.length=4096*4096;
   a=null;
		
   Sleep(2000);
}

It allocates memory, but its never gets freed, just keep going 
up, and after 10 secs, memoryexception is thrown. I checked the 
pointer it is GC safe (attributes is 10). Am i missing something?

TY: collerblade