- Each entry's flags cell also holds v3's four fields: denied, pinned,
mode and a 16-bit TTL.
- compile.v4: INTERPRET checks every word it is about to execute or
compile -- recheck at TTL 0, else count down; a denied word is refused
with v3's line, the stack emptied and the line ended.
- capsule/acl.v4: ACL-MODE@ ACL-MODE! ACL-TTL@ ACL-TTL! ACL-ALLOW@
ACL-ALLOW! ACL-PINNED? ACL-PIN ACL-INHERIT ACL-INIT-PRIMITIVES ACL-HEAT@
ACL-WORD-ID, and ACL-HOOK.
- capsule/ACL.fth: v3's ACL.4th as FORTH source the node compiles; loading
it switches access control on.
- v3 checks every execution, inside definitions too. v4's code is native,
so it checks a word when it is compiled as well as when interpreted; a
call compiled while the word was allowed is not checked again.
DECOMPOSITION.md 5.20 says so.
- ACL-HEAT@ is 0 until heat is readable (D-6).
- tests/test_host_quit.c: seven transcripts of the v3 binary; the policy
file loaded and exercised; COLD.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
