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Foundation: bootstrap-selfhost-link LLVM verify on compiler_minimal (gen-0 fingerprint drift #21855) #22139
Description
Category
Foundation · Trust / M0 link gate · bootstrap self-host
Problem
On master (2026-07-22 maintainer probe), make bootstrap-selfhost-link fails when the compile path falls back to Zend gen-0 after stale native driver rejection (#21855 fingerprint guard).
bootstrap-lowering-freshness: stale native compile driver ... (want 474fb42d..., have 5517ed08...)
bootstrap-compile-invoke: compiled driver(s) failed — falling back to Zend gen-0
bootstrap-compile-invoke: php .../bin/compile.php -o .../build/selfhost .../test/selfhost/compiler_minimal/main.php (gen-0 Zend)
PHP Fatal error: Uncaught RuntimeException: Module verification failed due to Call parameter type does not match function signature!
... __value__writeLong(%__value__* %13, %__value__* %2)
... __value__valueDelref(i64* %34)
... icmp eq i32 %2, i64 0
... call void @internal_48() (incorrect number of arguments)
First failing gate for M0 milestone table on #78.
Repro
./script/docker-exec.sh -- bash -lc 'make bootstrap-selfhost-link'Done when
-
make bootstrap-selfhost-linkcompletes green on fresh Docker exec (noBOOTSTRAP_ALLOW_STALE_COMPILED_DRIVER=1) - Committed
prelinked/bootstrap-gen0/fingerprints match current lowering (bootstrap-lowering-freshnessquiet) or documented restamp batch landed on master - If LLVM bug: identify offending inventory unit / JIT helper from compile progress log; fix lowering (prefer PHP/JIT path over new C)
Release tracking
- Pillar 1 (Trust) on #10533
- Related: Foundation: compiled-driver reuse has no lowering-source freshness guard — Tier-1 workflow can silently test stale codegen (script/bootstrap-resolve-compile-invoke.sh) #21855 (driver freshness policy), recent restamp PRs Trust: gen-0 fingerprint after #22125 MathBaseConvert (#10533) #22130, Trust: gen-0 fingerprint + spine IsIterable (#10533) #22126, Trust: fix gen-0 lowering_source_fingerprint after #22115 mis-stamp #22122
- Blocks user
--fullindirectly when spine/vm-driver gates cannot run honest link
Activity
PurHur commentedon Jul 22, 2026
claim: php-compiler trust/bootstrap agent — starting this run (Pillar 1: north-star5-fast gen-0 fingerprint drift + bootstrap-selfhost-link)
Gates before claim:
Trust: restamp gen-0 fingerprint after post-#22130 lowering drift (#2…
PurHur commentedon Jul 22, 2026
Merged #22141
Verification (local Docker):
php script/check-bootstrap-gen0-manifest-sync.php→ OK (8e1177c5…)make north-star5-verify-fast→ OKmake bootstrap-selfhost-link→ OK (native gen-0, no Zend fallback)./script/release-readiness.sh --json→user_release_ready: yesRestamp only; blobs unchanged. Pillar 1 trust gate unblocked.