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Stage S-1a: parity hashing covers the whole dictionary; failures are logged, counted and marked INCOMPLETE (FABRIC-3.9.0 §8.1)

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- MAX_DICT_ENTRIES (2048) removed: the entry list is allocated to the
  dictionary's size; a cyclic chain is detected (Floyd) instead of capped.
- Colon-body walk bounded by vm->here, not a 1024-cell cap.
- Every failure prints PARITY:INCOMPLETE #n with its full reason, logs at
  LOG_ERROR, bumps sk_parity_incomplete_count(), and the record reads
  hash=INCOMPLETE / PARITY:FAIL code=4 rather than a plausible hash.
- Pre-existing #GP fixed: the walker dereferenced inline body data (S"
  bytes, offsets); it now follows only known dictionary entries.
- LIT operands that are entry pointers are hashed by word_id, not address,
  so a mature dictionary hashes identically across ISAs.

Probe (reverted): 563 -> 2563 words hashed, identical on amd64/aarch64/
riscv64; cyclic chain -> INCOMPLETE, counter 2. Boot parity unchanged
(531, 0x572daac83b797332). 3-ISA acceptance passes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Robert Allan James
2026-09-24 12:51:34 -04:00
co-authored by Claude Opus 5.5
parent 9bf2e8ec95
commit ee3db96ea8
35 changed files with 164134 additions and 37 deletions
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FABRIC-3.9.0.md
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@@ -345,7 +345,7 @@ words. It should all be fairly dynamic."*
| Where | Today | At the limit |
|---|---|---|
| `parity.c:498/646`, `MAX_DICT_ENTRIES` 2048 | parity walks at most 2048 dictionary entries | **Hashing stops.** Beyond 2048 words, `dict_hash` silently ignores the rest, so the determinism evidence would be computed over part of the dictionary. |
| `vm.h` `DICTIONARY_SIZE` 1024: `word_id_map[1024]`, `recycled_word_ids[1024]`; `dictionary_management.c:87` | word ids 0–1023 | **Word 1025 onward gets `WORD_ID_INVALID`,** and the physics hooks skip it (`physics_execution_hooks.c:95`). Execution heat, pipelining and transitions silently stop for later words. Hera is at 531. |
| `vm.h` `DICTIONARY_SIZE` 1024: `word_id_map[1024]`, `recycled_word_ids[1024]`; `dictionary_management.c:87` | word ids 0–1023 | **Word 1025 onward gets `WORD_ID_INVALID`,** and the physics hooks skip it (`physics_execution_hooks.c:95`). Execution heat, pipelining and transitions stop for later words. Hera is at 531. *(Corrected at S-1a: not strictly silent. `vm_dictionary_track_entry` logs a `LOG_WARN`, "out of stable IDs, disabling metrics for '…'", per word. But nothing counts it and nothing refuses: the word is still defined and runs outside the physics, so §8.1's rules are still unmet.)* |
| `string_words.c` `WORD` scratch, `WORD_SCRATCH_CAP` 64 | one **static** `word_scratch_addr`, allotted in the first caller's VM space | Not a count limit, but a static shared across VMs: a second VM calling `WORD` gets an address in someone else's space. Found at Stage G. |
**Captain Bob, 2026-09-24:** *"both of those failure modes that you've noted need to be handled