ASSERT (putenv (entry) == 0);
entry[0] = 'a'; /* Unspecified what getenv("a") would be at this point. */
ASSERT (unsetenv ("a") == 0); /* Both entries will be removed. */
ASSERT (putenv (entry) == 0);
entry[0] = 'a'; /* Unspecified what getenv("a") would be at this point. */
ASSERT (unsetenv ("a") == 0); /* Both entries will be removed. */