Files
codebase-memory-mcp/scripts
Martin Vogel 452372eec5 fix(mem): route ordinary malloc through mimalloc on Linux (#1360)
The comment above MIMALLOC_OVERRIDE_DEFINE claimed Unix "relies on
static-link-order override". That was never true. mimalloc emits strong
malloc/free definitions only when MI_MALLOC_OVERRIDE is set — the define its
source gates alloc-override.c on — and the build set it for MinGW only.
MI_OVERRIDE, which the build does set everywhere, is this project's own
prod/test marker that mimalloc never reads. With the override body compiled
out there were no strong symbols for link order to prefer, so ordinary malloc
went to libc.

Measured, not inferred. The shipped v0.9.1-rc.1 artifacts report 0/6
allocator-owned size classes on linux-arm64 glibc AND musl-static, and the
same A/B on ubuntu-arm64 here:

  main            warn  mem.allocator.not_owned  owned_classes=0/6
  with this fix   info  mem.allocator.owned      classes=all

Every purge/reclaim option cbm_mem_init sets was therefore inert on Linux,
applying only to the bound sqlite/tree-sitter populations — the same class of
defect as #581, where committed memory ratcheted for months because nothing
asserted the wiring on a real artifact.

macOS stays off deliberately and permanently: enabling the override there
compiles alloc-override.c's forwarding definitions, and under the two-level
namespace this binary's free becomes mi_free while system libraries keep
allocating from the system allocator, so the first pointer crossing that
boundary aborts with "mi_free: invalid pointer". ELF's flat namespace has no
such split, which is why Linux can have this and macOS cannot.

Three parts:

* Makefile.cbm switches MI_MALLOC_OVERRIDE and a new CBM_MEM_GLOBAL_OVERRIDE
  together in one place, for MinGW and Linux. The latter tells our own sources
  what to expect and goes into CFLAGS_PROD only, because MIMALLOC_CFLAGS_TEST
  builds mimalloc with -DMI_OVERRIDE=0 and no override define: a test binary
  has no global override BY CONSTRUCTION and must never be told to expect one.
  Deriving that expectation from the platform instead would make every Linux
  test run warn about a correctly configured build.

* mem.c splits the startup audit by what the build actually asked for. Where
  no override was requested, ordinary malloc reaching libc is the design, so
  it reports the measured ownership at INFO and names what IS bound. A warning
  that fires on every run of a correct build is not a tripwire, it is noise —
  it trains readers to ignore the one line that catches #581. The genuine
  warning still fires wherever an override was requested and did not take.

* smoke-test.sh Phase 1b pins the SHIPPED artifact's wiring per platform and
  fails in BOTH directions: Windows/Linux must own all classes, macOS must
  not. This cannot live in a unit test — a from-source test build never has
  the override — which is exactly why the defect survived so long.

Verified on ubuntu-arm64: prod owns all classes; the test build reports
bound-populations-only at INFO (0/6) and the mem suite stays green; smoke
Phase 1b passes, and fails with the expected message when the same tree is
built with the override forced off. On macOS: prod reports
bound_populations_only at INFO, smoke Phase 1b passes, mem suite 51/51.

Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>
2026-08-06 18:33:34 +02:00
..

scripts/ — the canonical leg entries

The doctrine (enforced, not advisory): a venue may provision a machine; only a canonical leg script may exercise the product. Local CI, PR CI, the dry run and the release all call the SAME files below — venues differ only in host specs, architecture and inputs, never in what a leg does. Platform differences (arm64 sanitizer flags, the Windows launcher, the linux portable binary) live INSIDE these scripts, once, never per-venue. tests/test_venue_parity_contract.sh (run as Step 0j of every test leg) turns any violation — inline harness logic in a workflow, a bypassed wrapper, a missing --help — into a red build.

Every entry answers --help (authoritative, agent-oriented: modes, env, exit codes) and rejects unknown flags with exit 2 + Please consult --help.

The legs

leg entry what a run gives you
test test.sh DEFAULT = the venue leg: static contracts (Step 0a–0j) + CLEAN ASan+UBSan build + all suites via the parallel harness + prod-binary guards. --suites a,b = iteration mode (incremental rebuild, subset, seconds). --tsan = the ThreadSanitizer leg. CLANGARM64 gets CI's trap-UBSan flags automatically.
build build.sh CLEAN production build (+ launcher on Windows). ccache via env.sh makes repeats fast; CCACHE_COMPILERCHECK=content guarantees a hit is byte-identical to a cold compile — never stale. --with-ui, --version, STATIC=1, BUILD_DIR=.
lint lint.sh clang-tidy + cppcheck + clang-format (+ no-skips policy). --ci = the CI gate set (no clang-tidy). Drives the same make targets as make lint/lint-ci.
smoke (unix) smoke-local.sh Stages a full release fixture, serves it on a kernel-assigned port, runs smoke-test.sh (ALL phases incl. download/install/update E2E) inside a disposable HOME/XDG/TMP sandbox. ui variant makes a missing embedded UI a FAILURE. CBM_SMOKE_ARTIFACT_DIR = smoke an extracted release artifact verbatim (release mode).
smoke (windows) ../test-infrastructure/vm/vm-smoke.sh Same contract for the launcher+payload pair, plus the user-PATH registry guard (prepare/verify/cleanup).
smoke-invariants smoke-invariants.sh The "shipped binary does not fail" battery (MCP handshake, all tools invocable, malformed-input resilience) — no fixture server, no install E2E. smoke.yml runs it on the WIDEST build-from-source matrix (incl. older-glibc legs the release artifacts cannot cover).
soak soak-legs.sh The release-gating soak SEQUENCE: quick then query-leak (the #581 detector — never reindexes, so RSS growth = query-path leak), each guarded by a completion-summary check. --legs quick for the ASan single-leg variant. Duration is per leg.

Internal harnesses — never called directly by a venue (the contract forbids it): smoke-test.sh (phases; wrappers provide fixture server + sandbox), soak-test.sh (one soak run; soak-legs.sh provides the sequence + guards), run-tests-parallel.sh (reached through test.sh).

Conventions

  • Exit codes: 0 = pass · 2 = usage error · 90 = guard (a run died without its completion summary — never counts as green) · anything else = the leg's real failure.
  • Iteration is a flag, not a side-tool: the fast paths (--suites, --legs) are modes of the SAME entry the gates run, so a dev loop can never drift from the venue behaviour.
  • Env sandboxing: the smoke wrappers neutralize every agent-config destination override; a smoke can never scribble on your real config.
  • Iterating on a change: scripts/test.sh --suites <suite> (seconds, incremental, same ASan+UBSan flags as the gate). List suites: build/c/test-runner --list-suites. Debugging a Windows-on-ARM trap: re-run with SANITIZE= for a plain build, or use the emulated win.sh ubsan-* pair for full diagnostics.
  • Before any push (the 3-OS ladder): scripts/test.sh (macOS, full) → ./test-infrastructure/run.sh full (Linux + TSan + smoke) → test-infrastructure/vm/win.sh test-par + guards + smoke-install (+ soak when the change touches memory/daemon paths).
  • Concurrency-touching change: add scripts/test.sh --tsan early — the same leg CI gates on.
  • Release-shaped verification: CBM_SMOKE_ARTIFACT_DIR=<extracted artifact> scripts/smoke-local.sh <binary> [ui] smokes exactly what would ship.
  • A leg is red in CI but green locally: first suspect environment shape, not code — the preflights (win.sh automatic; scripts/ci/preflight-docker.sh) and test-infrastructure/README.md's residuals list cover the knowable differences.

See scripts/ci/README.md for the CI plumbing and test-infrastructure/README.md for the venue map.