Regression: hash_algos() returns NULL as in_array() haystack — nested call operand (ext/standard/array.c hash.c)

Problem

hash_algos() returns a string list array when assigned or passed to var_export(), but evaluates to NULL when nested directly as the haystack argument to in_array(). Zend returns true for in_array('md5', hash_algos(), true).

Workaround today: assign hash_algos() to a variable first.

php-src reference

php/php-src ext/standard/array.c — PHP_FUNCTION(in_array) evaluates haystack once
php/php-src ext/hash/hash.c — PHP_FUNCTION(hash_algos) returns zend_hash of registered algorithms

Repro (failure today)

test/repro/maintainer_hash_algos_in_array.php:

<?php
declare(strict_types=1);

var_export(in_array('md5', hash_algos(), true));
echo "\n";

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
php test/repro/maintainer_hash_algos_in_array.php
php bin/vm.php test/repro/maintainer_hash_algos_in_array.php'

Runtime	Output
Zend PHP 8.2	`true`
VM today	Fatal `TypeError`: haystack must be array, null given ❌

Contrast (works on VM):

$algos = hash_algos();
var_export(in_array('md5', $algos, true));

Scope (this repo)

Path	Work
`ext/standard/` hash builtin lowering	Ensure `hash_algos()` materializes array when used as call argument
`lib/VM.php` / operand evaluation	Fix nested-builtin temp lifetime if VM drops array between arg evals
Tests	`test/compliance/cases/stdlib/hash_algos_in_array.phpt`

PHP-in-PHP: implement/fix in ext/standard + VM operand path; avoid C hash table duplication in runtime/.

Done when

Repro prints true on VM
in_array('xxh3', hash_algos(), true) works when xxh3 registered
Assignment and direct-nested forms agree (php-src-strict)

claim: PHP Compiler STD Lib — batch (issues #11313, #11322, #11323)

Already fixed on master before this batch — in_array('md5', hash_algos(), true) returns true on VM (verified 2026-06-24).

claim: PHP Compiler STD Lib — batch (issues #11313, #11365, #11366)

Triage 2026-06-24: repro from issue description passes on current master (VM matches Zend). No code change needed in this batch — please close if maintainer confirms.

Fix nested builtin FuncCall return null as callee argument (#11373). (#…

claim: cursor-agent-lane-c — batch (issues #11313, #11366, #9547) — compiler regression from #11409 inlineCallArgProducerPassesByRefGuards

Fix nested call operand regression from #11409 byRef guard (#11313). (#…

Merged via #11427.

Root cause: #11409 (#11422) changed inlineCallArgProducerPassesByRefGuards to return $feedsConsumerArg, which rejected producers when operand identity did not link producer.result to callee slots (e.g. in_array('md5', hash_algos(), true)).

Fix: Keep scoped named-local/by-ref checks from #11409, but return true when no fed-arg violations (position/dead-temp matching still applies).

Verification (VM matches Zend):

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
php bin/vm.php test/repro/maintainer_hash_algos_in_array.php
php bin/vm.php test/repro/maintainer_gap_nested_array_builtin_arg.php
vendor/bin/phpunit --filter testInArrayNestedHashAlgosRuntime
'

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Regression: hash_algos() returns NULL as in_array() haystack — nested call operand (ext/standard/array.c hash.c) #11313

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Regression: hash_algos() returns NULL as in_array() haystack — nested call operand (ext/standard/array.c hash.c) #11313

Description

Category

Problem

php-src reference

Repro (failure today)

Scope (this repo)

Done when

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PurHur commented on Jun 24, 2026

PurHur commented on Jun 24, 2026

PurHur commented on Jun 24, 2026

PurHur commented on Jun 24, 2026

PurHur commented on Jun 25, 2026

PurHur commented on Jun 25, 2026

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