Fix crash in callable check (#2901)

1 files changed, 16 insertions, 0 deletions

diff --git a/pylint/test/unittest_checker_typecheck.py b/pylint/test/unittest_checker_typecheck.py
index 7bce396c5..ba61a7d13 100644
--- a/pylint/test/unittest_checker_typecheck.py
+++ b/pylint/test/unittest_checker_typecheck.py
@@ -332,3 +332,19 @@ class TestTypeChecker(CheckerTestCase):
         )
         with self.assertNoMessages():
             self.checker.visit_call(call)
+
+    def test_unknown_parent(self):
+        """Make sure the callable check does not crash when a node's parent
+        cannot be determined.
+        """
+        call = astroid.extract_node(
+            """
+        def get_num(n):
+            return 2 * n
+        get_num(10)()
+        """
+        )
+        with self.assertAddsMessages(
+            Message("not-callable", node=call, args="get_num(10)")
+        ):
+            self.checker.visit_call(call)