Add regression test for #5982

ChangeLog

@@ -36,6 +36,9 @@ What's New in Pylint 2.13.2?
 ============================
 Release date: TBA
 
+* Fix crash when subclassing a ``namedtuple``.
+
+  Closes #5982
 
 
 What's New in Pylint 2.13.1?

requirements_test_min.txt

@@ -1,6 +1,6 @@
 -e .[testutil]
 # astroid dependency is also defined in setup.cfg
-astroid==2.11.0  # Pinned to a specific version for tests
+astroid==2.11.2  # Pinned to a specific version for tests
 typing-extensions~=4.1
 pytest~=7.0
 pytest-benchmark~=3.4

setup.cfg

@@ -48,7 +48,7 @@ install_requires =
     # Also upgrade requirements_test_min.txt if you are bumping astroid.
     # Pinned to dev of next minor update to allow editable installs,
     # see https://github.com/PyCQA/astroid/issues/1341
-    astroid>=2.11.0,<=2.12.0-dev0
+    astroid>=2.11.2,<=2.12.0-dev0
     isort>=4.2.5,<6
     mccabe>=0.6,<0.8
     tomli>=1.1.0;python_version<"3.11"

tests/functional/u/used/used_before_assignment_py37.py

@@ -1,6 +1,7 @@
 """Tests for used-before-assignment with functions added in python 3.7"""
 # pylint: disable=missing-function-docstring
 from __future__ import annotations
+from collections import namedtuple
 from typing import List
 
 
@@ -26,3 +27,9 @@ def inner_method(self, other: MyClass) -> bool:
             return self == other
 
         return inner_method(self, MyClass())
+
+
+class NamedTupleSubclass(namedtuple("NamedTupleSubclass", [])):
+    """Taken from https://github.com/PyCQA/pylint/issues/5982"""
+    def method(self) -> NamedTupleSubclass:
+        """Variables checker crashed when astroid did not supply a lineno"""

tests/functional/u/used/used_before_assignment_py37.txt

@@ -1 +1 @@
-undefined-variable:17:20:17:27:MyClass.incorrect_default_method:Undefined variable 'MyClass':UNDEFINED
+undefined-variable:18:20:18:27:MyClass.incorrect_default_method:Undefined variable 'MyClass':UNDEFINED