Blog publication task for PR #1210

Source: #1210
Merged commit: fd589c934548487667f00c4662a0492d03e35bd2

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Five test roots back in the graph, and what kept them out for months

DRAFT — Merged PR; unpublished blog draft

PR: #1210

Head SHA: 85de91bba047b8ecc58ca13bded27cd3c466e900

This file is an unpublished artifact, not an instruction to an agent.

Merged PR; unpublished blog draft. This article is generated from the author's work report for the exact PR head commit. Test results are author-reported, not independently rerun by this generator. Merge status is not proof of deployment or runtime correctness.

Work report

The five test roots that did not compile on main compile and pass again, so the headless test graph runs whole (135/135 steps, 2760 tests passed, 8 skipped on aarch64) and the spec names no blocked root.

What changed

• Fixed the five blocked roots: both dependency module names and golden_float on the test modules of src/trinity.zig and src/e2e_test.zig, libc on the queen_api and c_api test modules, the duplicated if in src/c_api.zig, and the removed packed_trit.zig import.
• Ported src/science.zig, src/vm.zig, src/vsa_jit.zig and src/c_api.zig to the HybridBigInt of the pinned zig-golden-float: the unpacked cache is an array, and dotProduct, bundle2 and bundle3 take no allocator; c_api reaches gen_encoding through the vsa.zig facade.
• Pointed build.zig at the C headers in src/libs/c, where they moved on 2026-03-19, so zig build libvsa and zig build libqueen build again.
• Gave the x86-64 JIT of src/jit.zig the C calling convention its generated code assumes (JitBinaryFn), which the first x86_64 run of the unblocked roots showed was missing.
• Built the e2e and benchmark root with LLVM (use_llvm), because Zig 0.15's own x86_64 Debug backend compiles zig-golden-float's by-value 71 KB HybridBigInt code 185 to 1680 times slower and its wall-clock thresholds measured the backend.
• Emptied BLOCKED_ROOTS in specs/reproduce/headless.t27, raised its floors, added TESTS_SKIPPED_MAX, and fixed tools/reproduce.py: run steps read once from the summary tree, failed tests named, a failed command's output printed and uploaded, a SKIPPED rule, and a self-check that plants a defect for every rule and parses verbatim zig output.

Context and reasoning

What the judge named: five roots, among them the library's own test root, and the compiler's message for each.

Two causes behind most of them: a dependency offered under the wrong name, and code written for an older HybridBigInt.

What the whole graph shows once it runs: 2760 tests, eight JIT tests that only x86_64 runs, and passes that test nothing.

Reported verification

• [passed] Command: python3 tools/reproduce.py --self-check. Result: 21 planted defects are each reported under their own code, a conforming record and a blocked root that still fails stay silent, and all 20 rules of the judge were seen to fire; copies without the SKIPPED rule or with an unplanted rule fail.. Evidence: tools/reproduce.py self_check, run locally on macOS Python 3 before the commit
• [passed] Command: python3 tools/reproduce.py headless --zig zig-0.15.2 in ubuntu:24.04 aarch64 with empty caches. Result: Build 94/94 steps with 46/46 installs; test 135/135 steps, 2760/2768 tests passed and 8 skipped, 66 run steps with tests and one empty, 67 compiled roots, no compile failure, both commands exit 0; no violation.. Evidence: Linux aarch64 container, head 85de91b, fresh zig caches, 3 min 9 s; the record and both command logs written by the tool
• [passed] Command: zig test src/jit.zig -target x86_64-linux-gnu, run in an amd64 container. Result: All six tests pass with callconv(.c); before the fix, bind correctness and bundle correctness failed exactly as on CI.. Evidence: Run locally before the commit, Zig 0.15.2
• [passed] Command: zig build e2e -Dci=true with use_llvm, x86_64 zig 0.15.2 in an amd64 container. Result: 99/99 tests including the four x86-64 JIT tests; cosine 11.4 us, permute 12.2 us, pack/unpack 21.8 us per operation; VERDICT 100/100.. Evidence: Run locally under emulation before the commit; without use_llvm the same root failed the three benchmarks and the verdict, as on CI
• [passed] Command: zig build libvsa and libqueen, then zig cc -Wall -Werror on examples/basic.c and semantic_search.c against the installed header and static library. Result: Both libraries build with their headers, both examples compile without warnings and run to completion.. Evidence: Linux aarch64 container with Zig 0.15.2, run locally before the commit

Limits and open questions

• The x86_64 numbers are from emulation and from the failing CI run; this PR's own x86_64 job is the first native run with LLVM for the e2e root.
• Most tests in src/jit_arm64.zig and src/jit_x86_64.zig return early off their architecture and count as passed there; they are recorded, not converted to skips.
• The C libraries and their examples are not part of the headless profile, so a regression there is not yet gated.

Receipts

• gHashTag/trinity PR #1210
• Reported head commit 85de91bba047
• Merge commit fd589c934548

Topic tags

#Engineering #Verification #CI