lib/other/environ.c

   1 /*
   2  * environ.c - define the variable environ
   3  */
   4 /* $Header$ */
   5 /*
   6  * This file defines the variable environ and initializes it with a magic
   7  * value.  The C run-time start-off routine tests whether the variable
   8  * environ is initialized with this value.  If it is not, it is assumed
   9  * that it is defined by the user.  Only two bytes are tested, since we
  10  * don't know the endian-ness and alignment restrictions of the machine.
  11  * This means that the low-order two-bytes should be equal to the
  12  * high-order two-bytes on machines with four-byte pointers.  In fact, all
  13  * the bytes in the pointer are the same, just in case.
  14  */
  15
  16 #if _EM_PSIZE==2
  17 char **environ = (char **) 0x5353;
  18 #else
  19 char **environ = (char **) 0x53535353;
  20 #endif