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DF-0055 — build log (final, successful build on guest)
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$ cc -O2 -o udev_uaf udev_uaf.c; echo BUILD_EXIT=$?
BUILD_EXIT=0
$ ls -l udev_uaf
-rwxr-xr-x  1 root  wheel  10456 Jul  1 21:15 udev_uaf

Compiler: cc 8.3 [DragonFly] Release/2019-02-22
Source:   findings/poc/DF-0055/udev_uaf.c (single TU, no external deps)

Build history:
  Attempt 1: failed — stray `/* temp */` inside the header block comment
             prematurely closed the outer comment (`expected identifier
             before '->'`). Fixed by replacing with `(temp dict)`.
  Attempt 2: BUILD_EXIT=0 (the build logged here).