fix_8522

CHANGES

@@ -1,6 +1,5 @@
 Release 3.4.0 (in development)
 ==============================
-
 Dependencies
 ------------
 
@@ -98,6 +97,8 @@ Features added
 
 Bugs fixed
 ----------
+* #8522: ``__bool__`` method isn't called now by autodoc module, so it won't lead to
+side effect or direct failure in case it generate an error.
 
 Testing
 --------

sphinx/ext/autodoc/__init__.py

@@ -716,7 +716,7 @@ class Documenter:
                 isprivate = membername.startswith('_')
 
             keep = False
-            if safe_getattr(member, '__sphinx_mock__', False):
+            if safe_getattr(member, '__sphinx_mock__', None) is not None:
                 # mocked module or object
                 pass
             elif self.options.exclude_members and membername in self.options.exclude_members: