Regression: Closure::getCurrent() — method_exists true on Zend 8.2 reference profile (re-#13981, Zend/zend_closures.c)

[PurHur]

Category

stdlib · php-src-strict

Problem

Closure::getCurrent() is a PHP 8.4+ API. Implementation landed in #13981, but on the reference profile (host PHP 8.2) method_exists(Closure::class, 'getCurrent') must be false like Zend. VM reports true, a phantom method registration breaking capability probes and function_exists-style library gates.

Forward-line builds advertising PHP 8.4 may expose the method when CompilerVersion::supportsClosureGetCurrent() is true and host PHP version matches — not unconditionally on 8.2 reference.

php-src reference

• php/php-src Zend/zend_closures.c — zim_Closure_getCurrent (PHP 8.4+)

PHP implementation target

• lib/VM/BuiltinClasses.php / ClosureState registration gated by CompilerVersion::supportsClosureGetCurrent() + host reference parity — no new C in runtime/

Repro

test/repro/maintainer_gap_closure_get_current_phantom.php

./script/docker-exec.sh -- php test/repro/maintainer_gap_closure_get_current_phantom.php
./script/docker-exec.sh -- php bin/vm.php test/repro/maintainer_gap_closure_get_current_phantom.php

Probe (host PHP 8.2)	Zend	VM
method_exists(Closure::class, 'getCurrent')	false	true

Functional repro when enabled: test/repro/maintainer_gap_closure_get_current.php.

Done when (php-src-strict)

• Reference profile (8.2 host) omits Closure::getCurrent from method_exists / class method table
• PHP 8.4+ forward profile retains working getCurrent() per Stdlib: Closure::getCurrent() missing — PHP 8.4 closure introspection (Zend/zend_closures.c) #13981
• test/repro/maintainer_gap_closure_get_current_phantom.php green on VM against 8.2 reference

[PurHur]

claim: PHP Compiler STD Lib — batch (issues #14225, #14221)

[PurHur]

Merged in #14231. supportsClosureGetCurrent() now uses version_compare(VERSION, '8.4.0', '>=') so method_exists(Closure::class, 'getCurrent') is false on 8.4.0-dev reference profile, matching Zend 8.2. Verified: repro ok, unit gate + VM compliance green, bin/compile.php -l.

[PurHur]

claim: worker-lane-b — batch (issue #14221)

[PurHur]

Merged via #14232 — gate supportsClosureGetCurrent on stable 8.4.0; phantom repro + compliance PHPT green on VM.