Regression: SplFileObject::setFlags(null) silent — Zend E_DEPRECATED soft coerce (ext/spl/spl_directory.c)

[PurHur]

Category

Regression: · php-src-strict · SPL soft-null

Problem

SplFileObject::setFlags(null) under non-strict types must emit E_DEPRECATED ("Passing null to parameter #1 … of type int is deprecated") and soft-coerce to 0 (Zend). VM silently coerces to 0 with no deprecation. Sibling soft-null setters: RegexIterator (#31748), FilesystemIterator (#31722), CachingIterator (#31694).

Probed 2026-08-17 — host Zend PHP 8.2+ vs php bin/vm.php.

Repro	Zend 8.2+	VM (2026-08-17)
$f->setFlags(null) then getFlags()	E_DEPRECATED + 0	silent flags=0 (no DEP)

php-src reference

• php/php-src ext/spl/spl_directory.c — SPL_METHOD(SplFileObject, setFlags) / Z_PARAM_LONG
• php/php-src ext/spl/spl_directory.stub.php — setFlags(int $flags)

PHP implementation target

• ext/spl/SplFileObjectBuiltin.php — SplFileObjectSetFlags::execute currently $frame->calledArgs[1]->resolveIndirect()->toInt(); use VmMath::parseZParamLongBuiltinArgForFrame like FilesystemIterator::setFlags (Regression: FilesystemIterator::setFlags(null) TypeError — Zend E_DEPRECATED soft coerce (ext/spl/spl_directory.c) #31722); no new runtime/*.c

Repro

./script/docker-exec.sh -- bash -lc 'php test/repro/maintainer_gap_splfileobject_setflags_null.php'
./script/docker-exec.sh -- bash -lc 'php bin/vm.php test/repro/maintainer_gap_splfileobject_setflags_null.php'

Done when

• setFlags(null) emits Zend-matching E_DEPRECATED then coerces to 0 on VM; JIT agrees if in scope
• Compliance .phpt guard under test/compliance/cases/ (SPL / SplFileObject)
• php-src-strict; no php-compiler-strict shortcut

[PurHur]

claim: PHP Compiler STD Lib Advanced — batch (issues #31795, #31796) — queued after #31795.

[PurHur]

Merged via #31799 — VM now emits E_DEPRECATED + flags=0 (was silent toInt); PHPUnit Issue31796 + focused VMTest OK.