Fix #7195: todo: emit doctree-resolved event with non-document node incorrectly

CHANGES

@@ -21,6 +21,7 @@ Bugs fixed
 * #7189: autodoc: classmethod coroutines are not detected
 * #7183: intersphinx: ``:attr:`` reference to property is broken
 * #6244, #6387: html search: Search breaks/hangs when built with dirhtml builder
+* #7195: todo: emit doctree-resolved event with non-document node incorrectly
 
 
 Testing

sphinx/ext/todo.py

@@ -28,7 +28,7 @@ from sphinx.environment import BuildEnvironment
 from sphinx.errors import NoUri
 from sphinx.locale import _, __
 from sphinx.util import logging, texescape
-from sphinx.util.docutils import SphinxDirective
+from sphinx.util.docutils import SphinxDirective, new_document
 from sphinx.util.nodes import make_refnode
 from sphinx.writers.html import HTMLTranslator
 from sphinx.writers.latex import LaTeXTranslator
@@ -159,6 +159,7 @@ class TodoListProcessor:
 
     def process(self, doctree: nodes.document, docname: str) -> None:
         todos = sum(self.domain.todos.values(), [])  # type: List[todo_node]
+        document = new_document('')
         for node in doctree.traverse(todolist):
             if not self.config.todo_include_todos:
                 node.parent.remove(node)
@@ -175,7 +176,11 @@ class TodoListProcessor:
                 new_todo['ids'].clear()
 
                 # (Recursively) resolve references in the todo content
-                self.env.resolve_references(new_todo, todo['docname'], self.builder)  # type: ignore  # NOQA
+                #
+                # Note: To resolve references, it is needed to wrap it with document node
+                document += new_todo
+                self.env.resolve_references(document, todo['docname'], self.builder)
+                document.remove(new_todo)
                 content.append(new_todo)
 
                 todo_ref = self.create_todo_reference(todo, docname)