base64_encode() memory issue

Hi, I'm not sure how to test what I noticed, so I figured I would post this here and see if any of you could test it and see if I'm correct. When I test this in a non-PHP environment with malloc(), this does present a problem however, and when running segfaults randomly appear because of it. In base64.c, the string is closed with a \0 byte, but this one byte is never allocated. Since it's just 1 byte, this often happens without causing trouble, but every once in a while it does cause a segfault. I hope someone can confirm this. Happy holidays, Ron