Regression: fstat Reflection return array — Zend array|false (ext/standard/file.stub.php)

Problem

ReflectionFunction('fstat')->getReturnType() is array on php-compiler and array|false on Zend. Runtime fstat can fail; the stub must advertise |false. Distinct from #23597 (param name $fp vs $stream). Probed 2026-08-07 @ 3b042898ae.

Repro	Zend 8.2 (2026-08-07)	VM (2026-08-07)
`ReflectionFunction('fstat')->getReturnType()`	`array\|false`	`array`

php-src reference

php/php-src ext/standard/file.stub.php — function fstat($stream): array\|false

PHP implementation target

Reflection / arginfo for fstat in ext/standard (or shared stub sync) — return array\|false; optionally align param name $stream with Regression: shell_exec/fstat/fpassthru/disk_* Reflection names drift — Zend command/stream/directory rejected (ext/standard stubs) #23597

Repro

./script/docker-exec.sh -- bash -lc \"php -r \\"echo (new ReflectionFunction('fstat'))->getReturnType();\\"\"
./script/docker-exec.sh -- bash -lc \"php bin/vm.php -r \\"echo (new ReflectionFunction('fstat'))->getReturnType();\\"\"
# or:
php -r 'echo (new ReflectionFunction(\"fstat\"))->getReturnType(), PHP_EOL;'
php bin/vm.php -r 'echo (new ReflectionFunction(\"fstat\"))->getReturnType(), PHP_EOL;'

Done when

Reflection return type is array\|false matching Zend
Named/positional fstat behavior unchanged
php-src-strict; small Reflection/compliance guard

Self-contained repro

./script/docker-exec.sh -- bash -lc '
echo -n "Zend: "; php -r "echo (new ReflectionFunction(\"fstat\"))->getReturnType(), PHP_EOL;"
echo -n "VM:   "; php bin/vm.php -r "echo (new ReflectionFunction(\"fstat\"))->getReturnType(), PHP_EOL;"
'

Expect Zend array|false, VM today array.

claim: PHP Compiler STD Lib Advanced — batch (issues #28842, #28919, #28483, #28520, #28557)

Cleanup note (branch kept)

Remote agent/advanced-stdlib-28483-fstat-reflection still exists (1 commit ahead of master, no open PR): BuiltinInternalArgInfo fstat → array|false + repro/compliance/unit. Leaving it while #28483 is open for a worker to rebase/open PR — not deleting.

Prior batch claim left no merged PR; next stdlib agent can reclaim from that branch tip.

claim: PHP Compiler STD Lib Advanced — batch (issues #28483, #28520, #28557)

Continuing prior Advanced handoff: remote branch agent/advanced-stdlib-28483-fstat-reflection rebased onto current master; shipping #28483 first, then #28520/#28557 sequentially.

Stdlib: fstat Reflection return array|false (#28483)

Stdlib: fstat Reflection return array|false (#28483) (#30085)

Merged via #30085

Verification:

master BuiltinInternalArgInfo → VM Reflection array; branch → array|false
php bin/vm.php test/repro/issue_28483_fstat_reflection_return.php → array|false
PHPUnit testFstatStubReturnArrayFalse + FstatReflectionReturnVMTest OK

Next in batch: #28520 (tmpfile/fopen untyped returns), then #28557 (file → array|false).

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Regression: fstat Reflection return array — Zend array|false (ext/standard/file.stub.php) #28483

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Problem

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Regression: fstat Reflection return array — Zend array|false (ext/standard/file.stub.php) #28483

Description

Category

Problem

php-src reference

PHP implementation target

Repro

Done when

Activity

PurHur commented on Aug 7, 2026

Self-contained repro

PurHur commented on Aug 10, 2026

PurHur commented on Aug 11, 2026

Cleanup note (branch kept)

PurHur commented on Aug 11, 2026

PurHur commented on Aug 11, 2026

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