stack overflow in dom

### Description The following code: ```php <?php $xml = str_repeat('<a>', 500000) . 'x' . str_repeat('</a>', 500000); $d=\Dom\XMLDocument::createFromString($xml, LIBXML_PARSEHUGE); $d->normalize(); ``` Resulted in this output: ``` #219 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #220 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #221 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #222 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #223 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #224 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #225 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #226 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #227 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #228 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #229 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #230 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #231 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #232 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #233 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #234 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #235 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #236 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #237 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #238 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #239 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #240 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #241 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #242 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #243 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #244 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #245 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #246 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #247 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 #248 0x55c57cadafa7 in php_dom_normalize_modern /home/php-src/ext/dom/php_dom.c:1973 SUMMARY: AddressSanitizer: stack-overflow /home/php-src/ext/dom/php_dom.c:1973 in php_dom_normalize_modern ==43==ABORTING ``` ``` USE_ZEND_ALLOC=0 ``` ### PHP Version ```plain 8.6.0 ``` ### Operating System ubuntu 22.04