Robert Allan JamesandClaude Sonnet 5
4e7dcdf889
FENCE ( -- ) exposes the dict_fence_latest/dict_fence_here state FORGET already honored internally, letting callers (e.g. a future SDK capsule) raise the boundary after loading their own content -- no new VM fields, no policy logic beyond exposing existing state. Writing a direct test for it surfaced a real, severe, pre-existing bug in FORGET's relink logic, unrelated to FENCE itself and reproducible with the original boot-time fence alone: - Forgetting the single newest word incorrectly destroyed every other word back to the fence too, not just the target. - Forgetting an older word (correctly cascading to remove newer words too, per FORTH-79 semantics) crashed with SIGSEGV. Root cause: the relink code's target_prev pointer was, by construction, always inside the range the preceding loop had just freed whenever target wasn't vm->latest -- so writing through it was a use-after-free every time that branch executed. Fixed by removing the target_prev tracking and both branches entirely; vm->latest unconditionally becomes target_next (target's own captured, still-valid link) after the free loop, correct in every case. Added a FENCE test suite to dictionary_manipulation_words_test.c (Module 14) including the exact regression case (forgetting the newest word must not disturb an older one). Verified zero warnings and identical POST/dict_hash results across all three kernel architectures. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
src/
Hosted StarForth VM implementation (compiled by the root Makefile).
Bare-metal kernel sources live in src/starkernel/; FORTH word
implementations in src/word_source/; the test harness in
src/test_runner/; platform shims in src/platform/.
Entry point / interpreter core
main.c— CLI entry point, VM init, DoE mode dispatch.vm.c— interpreter loop, stacks, dictionary state (the central runtime file).vm_api.c— external VM API implementation.vm_bootstrap.c— VM bootstrap initialization.vm_debug.c— debugging utilities.vm_time.c— time-related VM operations.vm_internal.h— internal-only declarations shared across thevm_*.cfiles, not part of the publicinclude/vm_api.hsurface.repl.c— REPL read-eval-print loop.cli.c— CLI argument parsing.io.c— I/O operations.log.c— logging infrastructure.
Memory / dictionary / blocks
memory_management.c— dictionary allocator.dictionary_management.c— dictionary allocation and search.dictionary_heat_optimization.c— Loop #1 execution-heat tracking.word_registry.c— word registration system.block_subsystem.c— logical→physical block mapper.blkio_file.c,blkio_ram.c,blkio_factory.c— block I/O backends (file-backed, RAM-backed) and the factory that selects between them.stack_management.c— stack operations.
Physics-driven adaptive runtime (7 feedback loops)
physics_runtime.c— main physics coordinator.physics_hotwords_cache.c— Loop #1 hot-words caching.physics_metadata.c— per-word metadata tracking.physics_pipelining_metrics.c— Loop #4 word-transition prediction.physics_execution_hooks.c— execution instrumentation.rolling_window_of_truth.c— Loop #2 circular execution-history buffer.inference_engine.c— Loops #5/#6, statistical inference (window-width, decay-slope).ssm_jacquard.c— L8 Jacquard steady-state mode selector; consumescompudynamics.cfor tuning-word/config lookups.compudynamics.c— generic compudynamics module (cd_tuning_word(),cd_tuning_vm()); the score/UCB/reward/weight constants for the L8 adaptive table live here, not inssm_jacquard.c.heartbeat_export.c— heartbeat metrics export (CSV export function itself not yet implemented — seedocs/working/architecture/heartbeat_csv_export.md).
Math / measurement
math_portable.c— portable math functions.profiler.c— performance profiling.doe_metrics.c— Design of Experiments metrics (2^7 factorial).
Any .bak file alongside a .c file here (doe_metrics.c.bak,
inference_engine.c.bak, vm.c.bak) is a pre-edit backup left by a past
maintenance script (see scripts/remove_loop_conditionals.sh), not a
build input.