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/test_runner/modules/
Per-category test files, one per FORTH-79 word category plus
integration/stress/adversarial suites, run in this order by
test_runner.c (POST order).
Word-category tests (validate each src/word_source/*.c file):
arithmetic_words_test.c, mixed_arithmetic_words_test.c,
stack_words_test.c, control_words_test.c, defining_words_tests.c,
memory_words_test.c, return_stack_words_test.c, double_words_test.c,
logical_words_test.c, io_words_test.c, string_words_test.c,
block_words_test.c, format_words_test.c, system_words_test.c,
dictionary_words_test.c, dictionary_manipulation_words_test.c,
vocabulary_words_test.c, starforth_words_test.c,
mama_forth_words_test.c, acl_words_test.c.
Cross-cutting tests:
integration_tests.c— multi-word interaction tests.stress_tests.c— load/volume tests.break_me_tests.c— adversarial/fuzzing tests.
Note: not every src/word_source/*.c file has a dedicated test module
here (e.g. defer_words.c, log_words.c, inference_words.c,
lifecycle_words_hosted.c, editor_words.c are exercised indirectly via
integration tests or the tools/hermes_*.sh smoke tests rather than a
standalone *_test.c module).