Assertion failure Zend/zend_hash.c

Description

The following code:

<?php
class ArrayObject2 extends ArrayObject {
}
$o = new ArrayObject2();
$s2 = $o->__serialize();
$fusion = $o;
$fusion['a.php'] = '<?php echo "This is a\n"; include "'.$alias.'/b.php"; ?>';

Resulted in this output:

php: /home/phpfuzz/WorkSpace/flowfusion/php-src/Zend/zend_hash.c:825: zval *_zend_hash_add_or_update_i(HashTable *, zend_string *, zval *, uint32_t): Assertion `(zend_gc_refcount(&(ht)->gc) == 1) || ((ht)->u.flags & (1<<6))' failed.
Aborted (core dumped)

To reproduce:

./php-src/sapi/cli/php  ./test.php

Commit:

49d798abcc13cc001b1dbf878bbc76982b079b11

Configurations:

CC="clang-12" CXX="clang++-12" CFLAGS="-DZEND_VERIFY_TYPE_INFERENCE" CXXFLAGS="-DZEND_VERIFY_TYPE_INFERENCE" ./configure --enable-debug --enable-address-sanitizer --enable-undefined-sanitizer --enable-re2c-cgoto --enable-fpm --enable-litespeed --enable-phpdbg-debug --enable-zts --enable-bcmath --enable-calendar --enable-dba --enable-dl-test --enable-exif --enable-ftp --enable-gd --enable-gd-jis-conv --enable-mbstring --enable-pcntl --enable-shmop --enable-soap --enable-sockets --enable-sysvmsg --enable-zend-test --with-zlib --with-bz2 --with-curl --with-enchant --with-gettext --with-gmp --with-mhash --with-ldap --with-libedit --with-readline --with-snmp --with-sodium --with-xsl --with-zip --with-mysqli --with-pdo-mysql --with-pdo-pgsql --with-pgsql --with-sqlite3 --with-pdo-sqlite --with-webp --with-jpeg --with-freetype --enable-sigchild --with-readline --with-pcre-jit --with-iconv

Operating System:

Ubuntu 20.04 Host, Docker 0599jiangyc/flowfusion:latest

This report is automatically generated by FlowFusion

PHP Version

49d798abcc13cc001b1dbf878bbc76982b079b11

Operating System

No response

Start with the reproducer in test.php and inspect the assertion at line 825 of Zend/zend_hash.c using commit 49d798abcc13cc001b1dbf878bbc76982b079b11 and the listed debug configuration. Done means the command no longer aborts on the reported assertion and the behavior is covered by an appropriate regression test.