9512fe850e98fdd448c638ca63fdd92a8a510255ahlstrchr("fooeyfooeyfoo", 'f') = "fooeyfooeyfoo"
9512fe850e98fdd448c638ca63fdd92a8a510255ahlstrrchr("fooeyfooeyfoo", 'f') = "foo"
9512fe850e98fdd448c638ca63fdd92a8a510255ahlstrchr("fooeyfooeyfoo", 'y') = "yfooeyfoo"
9512fe850e98fdd448c638ca63fdd92a8a510255ahlstrrchr("fooeyfooeyfoo", 'y') = "yfoo"
9512fe850e98fdd448c638ca63fdd92a8a510255ahlstrrchr("yfooeyfoo", 'y') = "yfoo"