Assertion failure Zend/Optimizer/zend_inference.c:2086

Description

The following code:

<?php
require "connect.inc";
$link = ldap_connect_and_bind($uri, $user, $passwd, $protocol_version);
insert_dummy_data($link, $base);
$result = ldap_list($link, "$base", "(objectClass=person)");
$entry = ldap_first_entry($link, $result);
var_dump(
$entry = ldap_next_entry($link, $entry),
ldap_get_values($link, $entry, 'sn'),
$entry = ldap_next_entry($link, $entry)
);
$fusion = $base;
function renderRawGraph(array $parents) {
$fusion = array();
foreach ($parents as $p) {
foreach ($graph as $graph) {
$graph[$graph]['line'] = 1;
}
$graph[] = array(
'line' => 1,
);
}
}

Resulted in this output:

Warning: Narrowing occurred during type inference of ZEND_FETCH_DIM_W. Please file a bug report on https://github.com/php/php-src/issues in /tmp/test.php on line 17
php: /home/phpfuzz/WorkSpace/flowfusion/php-src/Zend/Optimizer/zend_inference.c:2086: void emit_type_narrowing_warning(const zend_op_array *, zend_ssa *, int): Assertion `0 && "Narrowing during type inference"' failed.
Aborted (core dumped)

To reproduce (only in JIT):

-d "zend_extension=/home/phpfuzz/WorkSpace/flowfusion/php-src/modules/opcace.so" -d "opcache.enable=1" -d "opcache.enable_cli=1" -d "opcache.jit=1254"

PHP Version

nightly

Operating System

ubuntu 22.04

Commencez par Zend/Optimizer/zend_inference.c:2086 et reproduisez l’assertion avec PHP nightly, opcache JIT activé, et le snippet PHP fourni. C’est terminé lorsque l’exemple n’émet plus l’avertissement d’inférence de type et n’abandonne plus dans le chemin de l’assertion.