--TEST--
Bug #45392 (ob_start()/ob_end_clean() and memory_limit)
--SKIPIF--
<?php
if (getenv("USE_ZEND_ALLOC") === "0") {
    die("skip Zend MM disabled");
}
$tracing = extension_loaded("Zend OPcache")
    && ($conf = opcache_get_configuration()["directives"])
    && array_key_exists("opcache.jit", $conf)
    &&  $conf["opcache.jit"] === "tracing";
if (PHP_OS_FAMILY === "Windows" && PHP_INT_SIZE == 8 && $tracing) {
    $url = "https://github.com/php/php-src/pull/14919#issuecomment-2259003979";
    die("xfail Test fails on Windows x64 (VS17) and tracing JIT; see $url");
}
?>
--FILE--
<?php
echo __LINE__ . "\n";
ini_set('memory_limit', "2M");
ob_start();
$i = 0;
while($i++ < 5000)  {
  echo str_repeat("may not be displayed ", 42);
}
ob_end_clean();
?>
--EXPECTF--
2

Fatal error: Allowed memory size of %d bytes exhausted%s