text: #include <string.h>
  
  extern char *getenv(const char *name);
  extern int foo();
  extern int bar();
  
  int
  main()
  {
      char *tainted = getenv("hi");
      memset(tainted, 0, 3);
  
      char *not_tainted = tainted;
  
      return 0;
  }
  
  