1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <unistd.h> main(int argc,char ** argv)4int main(int argc, char **argv) 5 { 6 char buf[256]; 7 8 int i = argv[1] ? atoi(argv[1]) : 999999; 9 while (--i > 0) { 10 sprintf(buf, "%d", i); 11 setenv("VAR", buf, 1); 12 } 13 printf("Check size of [heap] mapping:\n"); 14 freopen("/proc/self/maps", "r", stdin); 15 while (fgets(buf, sizeof(buf), stdin)) 16 fputs(buf, stdout); 17 return 0; 18 } 19