Stop to use deprecated API: env.indexentries

2 files changed, 5 insertions, 2 deletions

diff --git a/sphinx/environment/__init__.py b/sphinx/environment/__init__.py
index b6d64201e..902cef034 100644
--- a/sphinx/environment/__init__.py
+++ b/sphinx/environment/__init__.py
@@ -750,7 +750,7 @@ class BuildEnvironment:
     @property
     def indexentries(self) -> Dict[str, List[Tuple[str, str, str, str, str]]]:
         warnings.warn('env.indexentries() is deprecated. Please use IndexDomain instead.',
-                      RemovedInSphinx40Warning)
+                      RemovedInSphinx40Warning, stacklevel=2)
         from sphinx.domains.index import IndexDomain
         domain = cast(IndexDomain, self.get_domain('index'))
         return domain.entries
diff --git a/sphinx/environment/adapters/indexentries.py b/sphinx/environment/adapters/indexentries.py
index 68198040d..9394f92bc 100644
--- a/sphinx/environment/adapters/indexentries.py
+++ b/sphinx/environment/adapters/indexentries.py
@@ -12,8 +12,10 @@ import re
 import unicodedata
 from itertools import groupby
 from typing import Any, Dict, Pattern, List, Tuple
+from typing import cast
 
 from sphinx.builders import Builder
+from sphinx.domains.index import IndexDomain
 from sphinx.environment import BuildEnvironment
 from sphinx.errors import NoUri
 from sphinx.locale import _, __
@@ -53,7 +55,8 @@ class IndexEntries:
                     # maintain links in sorted/deterministic order
                     bisect.insort(entry[0], (main, uri))
 
-        for fn, entries in self.env.indexentries.items():
+        domain = cast(IndexDomain, self.env.get_domain('index'))
+        for fn, entries in domain.entries.items():
             # new entry types must be listed in directives/other.py!
             for type, value, tid, main, index_key in entries:
                 try: