Use typing.TYPE_CHECKING for typehints

1 files changed, 2 insertions, 2 deletions

diff --git a/sphinx/domains/cpp.py b/sphinx/domains/cpp.py
index 625bbe81e..c7bb82203 100644
--- a/sphinx/domains/cpp.py
+++ b/sphinx/domains/cpp.py
@@ -11,6 +11,7 @@
 
 import re
 from copy import deepcopy
+from typing import TYPE_CHECKING
 
 from docutils import nodes
 from docutils.parsers.rst import Directive, directives
@@ -28,8 +29,7 @@ from sphinx.util.nodes import make_refnode
 from sphinx.util.pycompat import UnicodeMixin
 
 
-if False:
-    # For type annotation
+if TYPE_CHECKING:
     from typing import Any, Callable, Dict, Iterator, List, Match, Pattern, Tuple, Union  # NOQA
     from sphinx.application import Sphinx  # NOQA
     from sphinx.builders import Builder  # NOQA