From b9de95a1caf39c5eee35c984fd0b51ddd1b0d40e Mon Sep 17 00:00:00 2001
From: Stefan Behnel <stefan_ml@behnel.de>
Date: Sat, 17 Jan 2026 07:21:23 +0100
Subject: [PATCH] Add missing "noexcept" to fix a memory leak.

Fixes https://bugs.launchpad.net/lxml/+bug/2138421
---
 src/lxml/etree.pyx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lxml/etree.pyx b/src/lxml/etree.pyx
index 2ed3d1e15..3e7dca047 100644
--- a/src/lxml/etree.pyx
+++ b/src/lxml/etree.pyx
@@ -668,7 +668,7 @@ cdef class DocInfo:
         return root_name
 
     @cython.final
-    cdef tree.xmlDtd* _get_c_dtd(self):
+    cdef tree.xmlDtd* _get_c_dtd(self) noexcept:
         """"Return the DTD. Create it if it does not yet exist."""
         cdef xmlDoc* c_doc = self._doc._c_doc
         cdef xmlNode* c_root_node