C/C++

001  int main(int argc, char *argv[]) {
002          *((int*) 0) = 0;
003          return 0;
004  }

Java

001  public class NullPointer {
002          public static void main(String argv []) {
003                  ((Object) null).getClass();
004          }
005  }

Mono/C#

001  class NullPointer {
002          static void Main() {
003                  object o = null;
004                  o.ToString();
005          }
006  }

Pascal

001  Program NullPointer;
002  
003  Var
004          p : ^Integer;
005  
006  Begin
007          p := nil;
008          p^ := 0;
009  End.

x86 Assembler

001  .global main
002  
003  main:
004          movl $0x0,0x0
005          ret

Sparc Assembler

001  .global main
002  
003  main:
004          ret
005          ld [%g0], %l0