# guest: DragonFly dfbsd 6.5-DEVELOPME3988T #0 Thu Jul  2 06:02:54 UTC 2026 x86_64
# build: cc -O2 -Wall -Wextra -o /tmp/tr3988 /tmp/t3988.c   (guest cc 8.3 [DragonFly])
# run:   /tmp/tr3988   (as root via vm.sh run_root)
$ /tmp/tr3988

DF-3988 model: dc_link_dp.c:2605-2610 pipe scan
  link under test = 7; pipes[0].stream = NULL, match at pipes[1]
  i=0 pipes[0].stream=0x0 -> ...->sink->link: NULL DEREF (panic) [KERNEL: pipes[i].stream->sink]
RC_3988=0