Ti's strspn strcspn and strpbrk are broken

[ZERICO2005]

    char const * str = "abcdef";
    char const * empty = "";

    assert(strspn(str, empty) == 0);
    assert(strpbrk(str, empty) == NULL);
    assert(strcspn(str, empty) == 6);

    assert(strcspn(str, "cba") == 0);
    assert(strcspn(str, "fed") == 3);
    assert(strcspn(str, "eebbeb") == 1);
    assert(strcspn(str, "ffaafa") == 0);
    assert(strcspn(empty, str) == 0);
    assert(strcspn(empty, empty) == 0);

The following cases fail for Ti's implementation of strspn, strcspn, and strpbrk. These routines will need to be replaced.