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Stdlib: forward_static_call() outside class scope must Error — succeeds on VM (ext/standard/basic_functions.c) #12164
Description
Summary
Calling forward_static_call() from global scope (no active class scope) must throw Error: Cannot call forward_static_call() when no class scope is active (Zend/php-src). The VM currently executes successfully and returns the callee result.
Note: forward_static_call_array() from global scope is allowed on Zend — only the non-array form is restricted.
Repro
./script/docker-exec.sh -- bash -lc 'php bin/vm.php test/repro/issue_forward_static_scope.php'
./script/docker-exec.sh -- bash -lc 'php test/repro/issue_forward_static_scope.php'Zend (expected):
Error:Cannot call forward_static_call() when no class scope is active
VM (today):
unexpected_ok:3
php-src reference
ext/standard/basic_functions.c—zif_forward_static_call()class-scope guard
Implementation (PHP-in-PHP)
- Enforce active class scope in
ext/standard/builtin (forward_static_call) / shared VM guard before invoking the callback. - Mirror guard in JIT lowering if the builtin is JIT-supported.
Done when (php-src-strict)
- Global-scope repro throws
Errorwith Zend message - In-class
forward_static_call([C::class, 'm'])still works -
forward_static_call_array()global behavior unchanged (Zend parity) - Targeted test guard
Refs #1492
Activity
PurHur commentedon Jun 26, 2026
claim: PHP Compiler STD Lib — batch (issues #12165, #12164)
PurHur commentedon Jun 26, 2026
Already fixed on master (2026-06-26 verify): global-scope
forward_static_call([C::class, 'm'])throwsError: Cannot call forward_static_call() when no class scope is active. Repro:test/repro/issue_forward_static_scope.php. Unclaiming — no code change needed.PurHur commentedon Jun 30, 2026
claim: PHP Compiler STD Lib — batch (issues #12164)
Reject forward_static_call() at global scope for plain function names. (
PurHur commentedon Jun 30, 2026
Merged via #14058. VM repro + compliance green; forward_static_call_array('strlen') still allowed at global scope per Zend.