When creating a judy array, judy_open() didn't initialize JudySeg struct's 'seg' field (nor will valloc). This will cause judy_close() randomly segfaults for freeing invalid pointer.

To fix the bug, simply change the segment in judy_open(): <code> if ((seg = valloc(JUDY_seg))) { seg->next = JUDY_seg; } ... </code> to: <code> if ((seg = valloc(JUDY_seg))) { seg->seg = NULL; seg->next = JUDY_seg; } ... </code>

Fixed in judy64e.c release file