Prevent a recursion error when inferring self-referential variables without definition

Close PyCQA/pylint#1285

3 files changed, 22 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 75a9b99b..2e712db2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -34,6 +34,10 @@ Release Date: TBA
 
   Close #762
 
+* Prevent a recursion error when inferring self-referential variables without definition
+
+  Close PyCQA/pylint#1285
+
 * Numpy `datetime64.astype` return value is inferred as a `ndarray`.
 
   Close PyCQA/pylint#3332
diff --git a/astroid/protocols.py b/astroid/protocols.py
index 33d90ea3..6179ab34 100644
--- a/astroid/protocols.py
+++ b/astroid/protocols.py
@@ -367,7 +367,7 @@ def arguments_assigned_stmts(self, node=None, context=None, assign_path=None):
         callcontext = context.callcontext
         context = contextmod.copy_context(context)
         context.callcontext = None
-        args = arguments.CallSite(callcontext)
+        args = arguments.CallSite(callcontext, context=context)
         return args.infer_argument(self.parent, node.name, context)
     return _arguments_infer_argname(self, node.name, context)
 
diff --git a/tests/unittest_inference.py b/tests/unittest_inference.py
index ec396f8a..4dc785ab 100644
--- a/tests/unittest_inference.py
+++ b/tests/unittest_inference.py
@@ -5667,5 +5667,22 @@ def test_dataclasses_subscript_inference_recursion_error():
     assert helpers.safe_infer(node) is None
 
 
+def test_self_reference_infer_does_not_trigger_recursion_error():
+    # Prevents https://github.com/PyCQA/pylint/issues/1285
+    code = """
+    def func(elems):
+        return elems
+
+    class BaseModel(object):
+
+        def __init__(self, *args, **kwargs):
+            self._reference = func(*self._reference.split('.'))
+    BaseModel()._reference
+    """
+    node = extract_node(code)
+    inferred = next(node.infer())
+    assert inferred is util.Uninferable
+
+
 if __name__ == "__main__":
     unittest.main()