>> building harness (fixed): cc -O0 -DFIXED -Wall -o df3460_harness df3460_harness.c
>> built df3460_harness (rc=0)
attach          : iv_rs=0x8004902c0 interval=500
read (alive)    : reader gets 500  (ok)
deinit          : iv_rs freed, pointer now 0x0 (cleared)
window          : chunk reused by poison obj at 0x8004902c0
read (window)   : handler refused (fix active)
RESULT: FIXED — no UAF read/write
rc=0