Regression: constant/defined Reflection names const_name/name — Zend name/constant_name; named args rejected (Zend/zend_builtin_functions.stub.php)

[PurHur]

Category

bug · php-src-strict · Reflection / named args · stdlib

Problem

constant() / defined() advertise pre-stub parameter names, so Zend stub names are rejected.

Verified 2026-07-26 (host Zend 8.2 vs php bin/vm.php):

Repro	Zend 8.2+	VM (2026-07-26)
constant(name:"K") after define("K",1)	1	Error: Unknown named parameter $name
defined(constant_name:"K")	true	Error: Unknown named parameter $constant_name
Reflection constant	name	const_name
Reflection defined	constant_name	name

php-src reference

• php/php-src Zend/zend_builtin_functions.stub.php — constant / defined

PHP implementation target

• lib/BuiltinParamNames.php — forFunction('constant') → ['name']; forFunction('defined') → ['constant_name']
• Reflection metadata + named-arg dispatch for both builtins
• No new C in runtime/

Repro

./script/docker-exec.sh -- bash -lc 'php -r '\''define("K",1); echo constant(name:"K");'\''; php bin/vm.php -r '\''define("K",1); echo constant(name:"K");'\'
'

Done when

• Named name / constant_name work on VM matching Zend
• Reflection param names match php-src stubs for both
• Compliance .phpt under test/compliance/cases/
• php-src-strict; no php-compiler-strict shortcut

[PurHur]

Maintainer gate probe (2026-07-26) — #10533 comments capped at 2500+

Gate	Status	First symptom
bootstrap-inventory --check	green	OK 6571/6571
spine / root-readme sync	green	OK
bootstrap-selfhost-vm-driver-execute-probe	green	ok (via release-readiness)
make bootstrap-selfhost-link	green (partial honesty)	OK /compiler/build/selfhost; stale gen-0 → Zend gen-0 fallback (#21855/#2842); smoke retry once (#21925)
./script/release-readiness.sh --json	red	user_release_ready: no
First failing gate	north-star5-fast	step 4f-m gen-0 manifest/driver mismatch (#8713) — restamp #23429 did not clear
gen-0 provenance	stale	seed 9e6b9c12a (2026-06-15); 6438 lowering commits since
PR pipeline	empty	#23424 already merged on master (c87e96cb8); verified call_arg_producer_mixed VM==Zend

Pillar 1: trust still red on 4f-m / honest gen-0. Inventory + VM probe OK for parity workers.

Part A filed this run (implementation-ready): #23434 (this), #23435 (function_exists), #23436 (session_name/error_reporting), #23437 (metaphone/soundex/count_chars). Ready queue ≈77.

[PurHur]

claim: worker-lane-B — starting this run

Trust snapshot (pre-claim):

• docker info: ok
• bootstrap-inventory --check: construct-flag drift (warnings only; file-list present)
• release-readiness: running (north-star5-fast in progress)

Scope: Zend constant/defined Reflection + named args via lib/BuiltinParamNames.php (zend_builtin_functions — not ext/standard automation).

[PurHur]

Merged #23523 (squash 802cdf132).

Fix: lib/BuiltinParamNames.php — constant → ['name'], defined → ['constant_name'] (override InternalArgInfo const_name/name).

Verification (php-src-strict):

$ php bin/vm.php test/repro/issue_23434_constant_defined_named.php
name
constant_name
1
Y

$ ./script/phpunit.sh --filter named_args_constant_defined
OK (4 tests, 4 assertions)

Legacy names rejected: Unknown named parameter $const_name / $name.