gh-98878: Use builtins from the bound frame when offering a suggestion (#98880)

3 files changed, 12 insertions, 1 deletions

diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
index 56b1687..149d023 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -7,6 +7,7 @@ import sys
 import types
 import inspect
 import importlib
+import builtins
 import unittest
 import re
 import tempfile
@@ -3209,6 +3210,14 @@ class SuggestionFormattingTestBase:
         actual = self.get_suggestion(func)
         self.assertIn("'ZeroDivisionError'?", actual)
 
+    def test_name_error_suggestions_from_builtins_when_builtins_is_module(self):
+        def func():
+            custom_globals = globals().copy()
+            custom_globals["__builtins__"] = builtins
+            print(eval("ZeroDivisionErrrrr", custom_globals))
+        actual = self.get_suggestion(func)
+        self.assertIn("'ZeroDivisionError'?", actual)
+
     def test_name_error_suggestions_do_not_trigger_for_long_names(self):
         def func():
             somethingverywronghehehehehehe = None
diff --git a/Lib/traceback.py b/Lib/traceback.py
index 0f0f2b3..cf5f355 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -1035,7 +1035,7 @@ def _compute_suggestion_error(exc_value, tb, wrong_name):
         d = (
             list(frame.f_locals)
             + list(frame.f_globals)
-            + list(frame.f_globals['__builtins__'])
+            + list(frame.f_builtins)
         )
     if len(d) > _MAX_CANDIDATE_ITEMS:
         return None
diff --git a/Misc/NEWS.d/next/Library/2022-10-30-22-42-48.gh-issue-98878.fgrykp.rst b/Misc/NEWS.d/next/Library/2022-10-30-22-42-48.gh-issue-98878.fgrykp.rst
new file mode 100644
index 0000000..e83422a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-10-30-22-42-48.gh-issue-98878.fgrykp.rst
@@ -0,0 +1,2 @@
+Use the frame bound builtins when offering a name suggestion in
+:mod:`traceback` to prevent crashing when ``__builtins__`` is not a dict.