Robert Allan James
283c4780e4
10 of 16 registered words modeled (COLD/WARM/BYE/WORDS/VLIST/PAGE/NOP/ QUIT/ABORT/EXECUTE guard-shape), plus the internal (ABORT") runtime helper. Deferred: ( and \ (TIB dependency), SAVE-SYSTEM (real file I/O), 79-STANDARD (reads a non-per-VM global), ABORT" compile-time half (TIB + codegen), SEE (TIB + raw threaded-code pointer walk). Two findings. (1) system_running/forth_79_standard are file-scope C statics doing per-VM-shaped work -- the 5th and 6th occurrence of this bug pattern in the sweep (previously: control_words.c's cf_stack, dictionary_manipulation_words.c's state_variable, string_words.c's word_scratch_addr). (2) EXECUTE casts a popped FORTH cell straight to a DictEntry host pointer and calls through it (entry->func(vm)), gated only by a null check -- same hazard class as format_words.c's ?/DUMP but far more consequential since EXECUTE is a core, ubiquitous primitive rather than a diagnostic word. Flagged as the highest-severity finding this sweep has produced.
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