p1                135 user/ulib.c      const char *p1 = s1, *p2 = s2;
p1                137 user/ulib.c        if (*p1 != *p2) {
p1                138 user/ulib.c          return *p1 - *p2;
p1                140 user/ulib.c        p1++;
p1               2718 user/usertests.c   char *p1 = sbrklazy(n);
p1               2719 user/usertests.c   if (p1 < 0 || p1 != p) {
p1               2720 user/usertests.c     printf("sbrklazy(%d) returned %p, not expected %p\n", n, p1, p);