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 char **environ = (char **) 0x53535353; 17