Regression: DOMException NOT_FOUND_ERR code is 0 — Zend code 8 (ext/dom/php_dom.c) #22694

Category

stdlib · php-src-strict · DOMException codes (pillar 4)

Problem

Double-removeChild of an already-detached node must throw DOMException with Zend message Not Found Error and code 8 (DOM_NOT_FOUND_ERR). The VM throws a near message (Not found error) but $e->getCode() is 0.

DOM_NOT_FOUND_ERR constant is correctly 8 on both engines — only the exception instance code (and message casing) is wrong. Sibling of open #22658 (WRONG_DOCUMENT_ERR code 0 vs 4); fix shared DOMException construction so all DOM error codes propagate.

Probed 2026-07-23 on master VM vs host Zend 8.2.32.

php-src reference

• php/php-src ext/dom/php_dom.c — dom_get_domexception / NOT_FOUND_ERR
• php/php-src ext/dom/node.c — dom_node_remove_child

PHP implementation target

• ext/dom/ DOMException throw sites — pass code 8 + Zend message text; share helper with Regression: DOMException WRONG_DOCUMENT_ERR code is 0 — Zend code 4 (ext/dom/php_dom.c) #22658
• PHP-in-PHP only

Repro

./script/docker-exec.sh -- bash -lc 'php bin/vm.php -r '"'"'
$d = new DOMDocument();
$d->loadXML("<r><a/></r>");
$a = $d->documentElement->firstChild;
$d->documentElement->removeChild($a);
try {
  $d->documentElement->removeChild($a);
  echo "no throw\n";
} catch (DOMException $e) {
  echo "msg=", $e->getMessage(), " code=", $e->getCode(), "\n";
}
echo "DOM_NOT_FOUND_ERR=", DOM_NOT_FOUND_ERR, "\n";
'"'"''

Done when

• Double-remove throws code 8 and message Not Found Error
• Compliance .phpt under test/compliance/cases/stdlib/ (or dom/)
• php-src-strict; no php-compiler-strict shortcut
• Prefer one shared DOMException helper with Regression: DOMException WRONG_DOCUMENT_ERR code is 0 — Zend code 4 (ext/dom/php_dom.c) #22658 rather than one-off codes