Robert Allan JamesandClaude Sonnet 5
c1360df2d1
block_words.c is categorically different from every file covered so far in this sweep: every other word_source file operates on pure per-VM internal state already in vm_state (data_stack/return_stack/memory/dictionary). block_words.c sits on top of a real disk-backed I/O subsystem (block_subsystem.h) plus a per-VM in-memory cache of it (vm->blk_vm_lbn/blk_vm_cbuf/blk_vm_dirty/blk_vm_next), none of which are in vm_state. Only SCR is self-contained (just needs vm->scr_addr, added to vm_state the same way here/ecw_nesting were for earlier files). The other 11 words are deferred for three reasons documented in the theory header: the block-window cache subsystem (a modeling project on the scale of the deferred TIB input subsystem, not a one-word extension), real disk I/O via block_subsystem.h, and recursive vm_interpret()/printf() in LOAD/LIST/ THRU/-->. Noted in passing: blk_vm_evict/blk_vm_flush_all's own comments document a real raw-pointer-lifetime bug (stale C buffer pointers after block- subsystem struct-copy eviction) that was already found and fixed by hand in the C, before this suite ever looked at the file -- not an open issue, just worth recording as prior art for exactly the class of bug this sweep exists to catch. 30 theory files verify with zero errors. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
proof/
Isabelle/HOL theory files providing machine-checkable proofs of determinism and correctness for StarForth. 24 theory files covering all 7 feedback loops, core word categories, and the word-level ACL system.
Running proofs
isabelle build -D proof/
Requires an Isabelle installation. See docs/01-getting-started/DEVELOPER.md.
Theory files
Foundations
| File | Covers |
|---|---|
StarForth_Base.thy |
Base definitions and type system |
StarForth_Correctness.thy |
Overall correctness |
StarForth_Transition.thy |
State transitions |
StarForth_Concurrent.thy |
Concurrency properties |
StarForth_Mutex.thy |
Mutual exclusion |
Physics loops (1–7)
| File | Loop |
|---|---|
StarForth_Loop1_Heat.thy |
Execution heat tracking |
StarForth_Loop2_Window.thy |
Rolling window of truth |
StarForth_Loop3_Decay.thy |
Linear decay |
StarForth_Loop4_Pipeline.thy |
Word transition prediction |
StarForth_Loop5_WinInf.thy |
Window width inference |
StarForth_Loop6_DecayInf.thy |
Decay slope inference |
StarForth_Loop7_Heartrate.thy |
Adaptive heartrate |
Word categories
StarForth_Arithmetic_Words.thy, StarForth_Stack_Words.thy,
StarForth_Logical_Words.thy, StarForth_Memory_Words.thy,
StarForth_Return_Stack_Words.thy, StarForth_Q48_16.thy
ACL system (Phase 6)
| File | Property |
|---|---|
ACL_Pin_Monotone.thy |
Pin is one-way |
ACL_Inherit_Clears_Pin.thy |
Inheritance clears pin |
ACL_TTL_Bounded.thy |
TTL stays within bounds |
ACL_Emergency_Bypass.thy |
Emergency console bypass |
ACL_No_Escalation.thy |
No privilege escalation |
See also
ROOT— Isabelle project manifest- Project root