Parity backlog snapshot 2026-06-20 (k) — path empty string, sprintf exceptions, ob_end_clean (refs #1492)

[PurHur]

North-star tracker: #1492

Maintainer run 2026-06-20 (k)

Bootstrap: link ✅ · helloworld ✅ · inventory --check ❌ (warning-count drift only).

4 new implementation-ready issues from Docker php vs bin/vm.php probes:

#	Category	Gap
#10257	stdlib	realpath('') → false not cwd
#10258	stdlib	dirname('') → '.' not ''
#10259	stdlib	sprintf/printf/vsprintf/vprintf too few args → LogicException not ArgumentCountError/ValueError
#10260	stdlib	ob_end_clean() no buffer → missing Notice

Repro scripts committed under test/repro/maintainer_gap_{realpath_empty,dirname_empty,sprintf_too_few_args,ob_end_clean_no_buffer}.php.

PR pipeline: 0 open PRs; no merges this run.

Queue remains well-stocked with implementation-ready worker issues (stdlib regressions, enum preservation, php-in-PHP JIT shrink targets).

[PurHur]

Lane B worker run (2026-06-27, cursor-agent-lane-b) — queue triage (refs #1492; epic commenting disabled).

Lane filter

Issue number % 3 == 1; excluded labels: stdlib, php-runtime, runtime-shrink, php-in-php; excluded scope: Stdlib: / ext/* titles.

Checked

• Paginated all open issues via GitHub REST API (full queue scan)
• Cross-referenced open PRs (0 open at scan time)
• Reviewed parity backlog snapshots Parity backlog snapshot 2026-06-19 (e) — FCC instance method, ArrayObject construct, JIT isset/static (refs #1492) #10174, Parity backlog snapshot 2026-06-19 (f) — closure __DIR__, autoload stack, ini_get_all compile, JIT array/scope (refs #1492) #10189, Parity backlog snapshot 2026-06-20 (j) — magic const regression, array_find_key, JIT cast/offset (#1492) #10249, Parity backlog snapshot 2026-06-20 (k) — path empty string, sprintf exceptions, ob_end_clean (refs #1492) #10261, Parity backlog snapshot 2026-06-20 (p) — final const, stream bucket, array_shift, ob_end_clean, StreamIo JIT (refs #1492) #10327, Parity backlog snapshot 2026-06-20 (r) — fgets length, enum method regression, JIT in/scalar-dim/closure (refs #1492) #10345, Parity backlog snapshot 2026-06-20 (t) — enum foreach byref, const new, hook isset, JIT SensitiveParam/EnumCases (refs #1492) #10396 and their lane-B child refs — all OPEN children are stdlib-owned, php-in-PHP-owned, or already CLOSED
• Recent lane-B issues (Stdlib: ReflectionConstant class registered on VM — Zend 8.2 reference profile false (ext/reflection/php_reflection.c, PHP 8.3+) #12385, Regression: putenv() invalid assignment syntax — ValueError not false (ext/standard/basic_functions.c, re-#10335) #12460, Regression: ArrayObject::getIteratorClass() returns NULL after setIteratorClass() (ext/spl/spl_array.c, re-#10778) #12472, Stdlib: CompileTime/DelayedTargetValidation attribute classes registered on VM — Zend 8.2 reference profile false (Zend/zend_attributes.c, PHP 8.4) #12598, Stdlib: getrusage() ru_maxrss always 0 — live process RSS not reported (ext/standard/basic_functions.c) #12744, …) all carry stdlib label or stdlib scope

Result

No eligible lane-B implementation issue to claim this run. Only remaining lane-B open items are snapshot trackers (meta), not implementable units.

Local note

php script/bootstrap-inventory.php --check reports construct-flag drift (Compiler.php 613→614 methods, CompilerVersion.php 49→50) — likely needs STD Lib / recent merge follow-up, not lane-B scope.

No batch claimed.

[PurHur]

Lane B worker run (2026-06-28, cursor-agent-lane-b) — no eligible issue to claim (refs #1492; epic commenting disabled).

Scan (issue % 3 == 1, worker lane B)

• Open issues scanned: 726 (full queue via gh api --paginate)
• Open PRs: 0
• Lane-B issues in open set: ~180 (n % 3 == 1)

Excluded per run rules:

• stdlib / phase-4:stdlib / Stdlib: scope → STD Lib automation
• php-runtime / runtime-shrink / php-in-php labels or primary scope → PHP Runtime → PHP automation
• Parity backlog snapshot umbrellas (Parity backlog snapshot 2026-06-19 (e) — FCC instance method, ArrayObject construct, JIT isset/static (refs #1492) #10174, Parity backlog snapshot 2026-06-19 (f) — closure __DIR__, autoload stack, ini_get_all compile, JIT array/scope (refs #1492) #10189, Parity backlog snapshot 2026-06-20 (j) — magic const regression, array_find_key, JIT cast/offset (#1492) #10249, Parity backlog snapshot 2026-06-20 (k) — path empty string, sprintf exceptions, ob_end_clean (refs #1492) #10261, Parity backlog snapshot 2026-06-20 (p) — final const, stream bucket, array_shift, ob_end_clean, StreamIo JIT (refs #1492) #10327, Parity backlog snapshot 2026-06-20 (r) — fgets length, enum method regression, JIT in/scalar-dim/closure (refs #1492) #10345, Parity backlog snapshot 2026-06-20 (t) — enum foreach byref, const new, hook isset, JIT SensitiveParam/EnumCases (refs #1492) #10396) — meta trackers only; lane-B child refs (Language: instance method first-class callable (expr)->m(...) — compile fails PHPTypes\Type::array() (Zend/zend_compile.c) #10168, Regression: match()/switch enum-case subject matches scalar backing arms — re-#10030 (Zend/zend_execute.c) #10285, Language: global final typed constants (PHP 8.4) — compile accepts on PHP 8.2 target (Zend/zend_compile.c) #10324, Regression: foreach by-ref on enum cases materializes backing int not enum object (re-#10270, Zend/zend_execute.c) #10390–php-in-php: JIT EnumCasesHelper — route Enum::cases() LLVM through VmEnum PHP not inline HashTable glue (#1492) #10395, …) all CLOSED
• Title-scoped php-in-php without label: php-in-php: route standalone AOT unpack() through UnpackJitHelper PHP — delete StringUnpackJit LLVM (~2.4k LOC) #13063 (unpack JIT shrink)

Eligible lane-B implementation-ready implementation issues: 0

Did not steal from lanes A (% 3 == 0) or C (% 3 == 2).

Bootstrap gates (master)

Gate	Result
make bootstrap-selfhost-vm-driver-execute-probe	OK
php script/bootstrap-inventory.php --check	OK
php script/check-selfhost-spine-coverage-sync.php	OK (3428/3428)

No batch claimed; lane B needs new language/compiler/JIT issues filed with n % 3 == 1 without stdlib/php-in-php/runtime-shrink labels.

[PurHur]

Merged bootstrap spine/inventory sync for mbstring (#13113) via #13127.

Gate: make north-star5-verify-fast step 2 was red (9 spine files missing after mbstring merge). Now green: inventory 3436/3436, spine coverage OK.

[PurHur]

Lane B worker run (2026-06-28, cursor-agent-lane-b) — no eligible issue to claim (refs #1492; epic commenting disabled).

Scan (issue % 3 == 1, worker lane B)

• Open issues scanned: 728 (full queue via gh api --paginate)
• Open PRs: 0
• Lane-B issues in open set: 263 (n % 3 == 1)

Excluded per run rules:

• stdlib / phase-4:stdlib / Stdlib: scope → STD Lib automation
• php-runtime / runtime-shrink / php-in-php labels or primary scope → PHP Runtime → PHP automation
• Parity backlog snapshot meta-issues (this thread and siblings Parity backlog snapshot 2026-06-19 (e) — FCC instance method, ArrayObject construct, JIT isset/static (refs #1492) #10174, Parity backlog snapshot 2026-06-19 (f) — closure __DIR__, autoload stack, ini_get_all compile, JIT array/scope (refs #1492) #10189, Parity backlog snapshot 2026-06-20 (j) — magic const regression, array_find_key, JIT cast/offset (#1492) #10249, Parity backlog snapshot 2026-06-20 (p) — final const, stream bucket, array_shift, ob_end_clean, StreamIo JIT (refs #1492) #10327, Parity backlog snapshot 2026-06-20 (r) — fgets length, enum method regression, JIT in/scalar-dim/closure (refs #1492) #10345, Parity backlog snapshot 2026-06-20 (t) — enum foreach byref, const new, hook isset, JIT SensitiveParam/EnumCases (refs #1492) #10396)

Eligible lane-B implementation-ready issues: 0

Did not steal from lanes A/C.

Representative lane-B backlog (not claimable here)

Issue	Owner	Reason
#13126, #13123, #13079, #12916	STD Lib	SplFileObject, CachingIterator, proc_get_status, LimitIterator
#13062	PHP Runtime → PHP	php-in-php: pack JIT shrink
#12764, #12472, #12460, #12423	STD Lib	sprintf/var_export/ArrayObject/putenv

Bootstrap gates (host)

Gate	Result
make bootstrap-selfhost-vm-driver-execute-probe	OK
make bootstrap-selfhost-link	OK (gen-0 sidecar fallback)
php script/bootstrap-inventory.php --check	FAIL — stale doc (hex2bin.php +2 warnings, CompilerVersion.php 59→60 methods)

Lane B compile/language backlog empty — need new implementation-ready language/compiler/JIT issues without stdlib/php-in-php labels.

[PurHur]

Lane B worker run (2026-06-28, cursor-agent-lane-b) — no eligible issue to claim (refs #1492; epic commenting disabled).

Scan (issue % 3 == 1, worker lane B)

• Open issues scanned: 728 (full queue via gh api --paginate)
• Open PRs: 1 (Bootstrap: fix nested JIT JsonEncodeJitHelper compile (#13245) #13246 → Bootstrap: inventory argv rebuild fails — nested JIT object::runStackFrames() in JsonEncodeJitHelper (#1492) #13245, lane A % 3 == 0)
• Lane-B issues in open set: 261 (n % 3 == 1)

Excluded per run rules:

• stdlib / phase-4:stdlib / Stdlib: scope → 253 items (STD Lib automation)
• Parity backlog snapshot umbrellas → 7 meta trackers (Parity backlog snapshot 2026-06-19 (e) — FCC instance method, ArrayObject construct, JIT isset/static (refs #1492) #10174, Parity backlog snapshot 2026-06-19 (f) — closure __DIR__, autoload stack, ini_get_all compile, JIT array/scope (refs #1492) #10189, Parity backlog snapshot 2026-06-20 (j) — magic const regression, array_find_key, JIT cast/offset (#1492) #10249, Parity backlog snapshot 2026-06-20 (k) — path empty string, sprintf exceptions, ob_end_clean (refs #1492) #10261, Parity backlog snapshot 2026-06-20 (p) — final const, stream bucket, array_shift, ob_end_clean, StreamIo JIT (refs #1492) #10327, Parity backlog snapshot 2026-06-20 (r) — fgets length, enum method regression, JIT in/scalar-dim/closure (refs #1492) #10345, Parity backlog snapshot 2026-06-20 (t) — enum foreach byref, const new, hook isset, JIT SensitiveParam/EnumCases (refs #1492) #10396)
• php-runtime / runtime-shrink / php-in-php labels or primary scope → PHP Runtime → PHP automation
• Recent claim: on Bootstrap: inventory argv rebuild fails — nested JIT object::runStackFrames() in JsonEncodeJitHelper (#1492) #13245/Bootstrap: fix nested JIT JsonEncodeJitHelper compile (#13245) #13246 (lane A bootstrap JIT fix, open PR)

Eligible lane-B implementation-ready implementation issues: 0

Did not steal from lanes A (% 3 == 0) or C (% 3 == 2).

Bootstrap gates (master @ 205a5aa)

Gate	Result
make bootstrap-selfhost-vm-driver-execute-probe	OK
php script/bootstrap-inventory.php --check	OK (3441/3441)
php script/check-selfhost-spine-coverage-sync.php	OK (3441/3441)

No batch claimed; lane B needs new language/compiler/JIT issues filed with n % 3 == 1 without stdlib/php-in-php/runtime-shrink labels.

[PurHur]

Lane B worker run (2026-06-29, cursor-agent-lane-b) — no eligible issue to claim (refs #1492; epic commenting disabled).

Scan (issue % 3 == 1, worker lane B)

• Open issues scanned: 728 (full queue via gh api --paginate)
• Open PRs: 0
• Lane-B issues in open set: 263 (n % 3 == 1)

Excluded per run rules:

• stdlib / phase-4:stdlib / Stdlib: / Regression: ext/* scope → STD Lib automation
• php-runtime / runtime-shrink / php-in-php labels or primary scope → PHP Runtime → PHP automation
• Parity backlog snapshot umbrellas (Parity backlog snapshot 2026-06-19 (e) — FCC instance method, ArrayObject construct, JIT isset/static (refs #1492) #10174, Parity backlog snapshot 2026-06-19 (f) — closure __DIR__, autoload stack, ini_get_all compile, JIT array/scope (refs #1492) #10189, Parity backlog snapshot 2026-06-20 (j) — magic const regression, array_find_key, JIT cast/offset (#1492) #10249, Parity backlog snapshot 2026-06-20 (k) — path empty string, sprintf exceptions, ob_end_clean (refs #1492) #10261, Parity backlog snapshot 2026-06-20 (p) — final const, stream bucket, array_shift, ob_end_clean, StreamIo JIT (refs #1492) #10327, Parity backlog snapshot 2026-06-20 (r) — fgets length, enum method regression, JIT in/scalar-dim/closure (refs #1492) #10345, Parity backlog snapshot 2026-06-20 (t) — enum foreach byref, const new, hook isset, JIT SensitiveParam/EnumCases (refs #1492) #10396) — meta trackers only; lane-B child refs (Language: instance method first-class callable (expr)->m(...) — compile fails PHPTypes\Type::array() (Zend/zend_compile.c) #10168, Regression: match()/switch enum-case subject matches scalar backing arms — re-#10030 (Zend/zend_execute.c) #10285, Language: global final typed constants (PHP 8.4) — compile accepts on PHP 8.2 target (Zend/zend_compile.c) #10324, Regression: foreach by-ref on enum cases materializes backing int not enum object (re-#10270, Zend/zend_execute.c) #10390–php-in-php: JIT EnumCasesHelper — route Enum::cases() LLVM through VmEnum PHP not inline HashTable glue (#1492) #10395, …) all CLOSED

Eligible lane-B implementation-ready implementation issues: 0

Did not steal from lanes A (% 3 == 0) or C (% 3 == 2).

Bootstrap gates (master)

Gate	Result
make bootstrap-selfhost-vm-driver-execute-probe	OK
php script/bootstrap-inventory.php --check	OK
php script/check-selfhost-spine-coverage-sync.php	OK (3458/3458)

No batch claimed; lane B needs new language/compiler/JIT issues filed with n % 3 == 1 without stdlib/php-in-php/runtime-shrink labels.

[PurHur]

Correction (2026-06-29): php script/bootstrap-inventory.php --check is FAIL (exit 1) — stale doc after #13376 merge added ext/mbstring/mb_internal_encoding.php (3457→3458 files). Spine coverage sync is OK (3458/3458). Regenerate with php script/bootstrap-inventory.php (bootstrap hygiene, not lane-B implementation scope).

[PurHur]

claim: cursor-agent-lane-b — bootstrap fallback (spine drift: FilterSanitize + HashTableRegistry after recent stdlib merges)

[PurHur]

Merged bootstrap spine drift fix — #13404

Problem

make north-star5-verify-fast step 2 failed: 3 inventory files missing from spine after recent filter/VM merges:

• ext/filter/FilterSanitizeJitHelper.php
• lib/JIT/Builtin/StringFilterSanitize.php
• lib/VM/HashTableRegistry.php

Fix

Added require_once for all three to M2 spine bundle; synced footnotes 3457→3461.

Verification

php script/bootstrap-inventory.php --check          → OK 3461/3461
php script/check-selfhost-spine-coverage-sync.php   → OK
php script/check-selfhost-spine-count-sync.php      → OK 3461/3461
make north-star5-verify-fast                        → OK

Lane B parity queue: still empty — need new implementation-ready language/compiler/JIT issues with issue % 3 == 1 without stdlib/php-in-php labels.

claim released: cursor-agent-lane-b — no lane-B parity issues to implement; bootstrap gate restored.

[PurHur]

Lane B worker run (2026-06-29, cursor-agent-lane-b) — no eligible batch to claim (refs #1492).

Scan (issue % 3 == 1)

• 0 eligible implementation-ready compile/language/JIT issues outside stdlib + php-in-php scopes
• Snapshot issues (Parity backlog snapshot 2026-06-19 (e) — FCC instance method, ArrayObject construct, JIT isset/static (refs #1492) #10174–Parity backlog snapshot 2026-06-20 (t) — enum foreach byref, const new, hook isset, JIT SensitiveParam/EnumCases (refs #1492) #10396) are trackers only
• Referenced gaps from prior snapshots already closed or owned by other lanes (Language: __DIR__/__FILE__/__LINE__ — Expr_MagicScriptConst compile failure regression (re-#9848, Zend/zend_compile.c) #10242 closed; Language: instance method first-class callable (expr)->m(...) — compile fails PHPTypes\Type::array() (Zend/zend_compile.c) #10168 closed; stdlib items → STD Lib automation; CastHelper/… → php-in-php automation)

Gates (no bootstrap fallback PR needed)

• make north-star5-verify-fast — OK
• php script/check-selfhost-spine-coverage-sync.php — OK (3461/3461)
• make bootstrap-selfhost-vm-driver-execute-probe — OK
• php script/bootstrap-inventory.php --check — construct-flag doc drift only (VmFs + stream classes); spine sync green

Stopped per lane rules; reported on #1492.

[PurHur]

claim released: cursor-agent-lane-b — no lane-B parity issues to implement this run (2026-06-29). Full scan documented on #1492.

[PurHur]

Lane B worker run (2026-06-29, cursor-agent-lane-b) — no eligible batch to claim (refs #1492; epic comment-locked).

Scan (issue % 3 == 1)

• Paginated 1000 open issues; 0 open PRs at scan start
• 0 eligible implementation-ready compile/language/JIT issues after excluding stdlib / php-in-php / php-runtime / runtime-shrink labels and Stdlib: / ext/* scope
• Parity snapshot trackers (Parity backlog snapshot 2026-06-19 (e) — FCC instance method, ArrayObject construct, JIT isset/static (refs #1492) #10174, Parity backlog snapshot 2026-06-19 (f) — closure __DIR__, autoload stack, ini_get_all compile, JIT array/scope (refs #1492) #10189, Parity backlog snapshot 2026-06-20 (j) — magic const regression, array_find_key, JIT cast/offset (#1492) #10249, Parity backlog snapshot 2026-06-20 (k) — path empty string, sprintf exceptions, ob_end_clean (refs #1492) #10261, Parity backlog snapshot 2026-06-20 (p) — final const, stream bucket, array_shift, ob_end_clean, StreamIo JIT (refs #1492) #10327, Parity backlog snapshot 2026-06-20 (r) — fgets length, enum method regression, JIT in/scalar-dim/closure (refs #1492) #10345, Parity backlog snapshot 2026-06-20 (t) — enum foreach byref, const new, hook isset, JIT SensitiveParam/EnumCases (refs #1492) #10396) — meta only; child refs closed or stdlib/php-in-php owned (e.g. Language: instance method first-class callable (expr)->m(...) — compile fails PHPTypes\Type::array() (Zend/zend_compile.c) #10168/Language: __DIR__/__FILE__/__LINE__ in closures — compile fails Expr_MagicScriptConst not Zend string (Zend/zend_compile.c) #10181/Language: __DIR__/__FILE__/__LINE__ — Expr_MagicScriptConst compile failure regression (re-#9848, Zend/zend_compile.c) #10242/Language: global final typed constants (PHP 8.4) — compile accepts on PHP 8.2 target (Zend/zend_compile.c) #10324 closed; Stdlib: spl_autoload_register() — class_exists()/new must invoke registered callbacks (ext/spl/php_spl.c) #10182/Stdlib: ob_end_clean() extra arguments — LogicException not ArgumentCountError (ext/standard/output.c) #10323 stdlib-open)
• Did not steal from lanes A/C

Gates (no bootstrap fallback PR needed)

Gate	Result
make north-star5-verify-fast	OK (3461/3461)
php script/bootstrap-inventory.php --check	OK 3461/3461
php script/check-selfhost-spine-coverage-sync.php	OK
make bootstrap-selfhost-vm-driver-execute-probe	OK (via north-star5 fast)
./script/ci-fast.sh	OK

Lane B parity queue: still empty — need new implementation-ready language/compiler/JIT issues with issue % 3 == 1 without stdlib/php-in-php labels.