From 2b958eca67d85c075dd29c643ec1f2dcb78da9e2 Mon Sep 17 00:00:00 2001
From: Andrey Vlasovskikh <andrey.vlasovskikh@jetbrains.com>
Date: Wed, 19 Nov 2014 20:35:57 +0300
Subject: [PATCH] Don't resolve attributes of metaclasses on instances of their
 instances

---
 .../python/psi/types/PyClassTypeImpl.java        |  3 +++
 .../metaClassMembers.py                          | 16 ++++++++++++++++
 .../PyUnresolvedReferencesInspectionTest.java    |  4 ++++
 3 files changed, 23 insertions(+)
 create mode 100644 python/testData/inspections/PyUnresolvedReferencesInspection/metaClassMembers.py

diff --git a/python/src/com/jetbrains/python/psi/types/PyClassTypeImpl.java b/python/src/com/jetbrains/python/psi/types/PyClassTypeImpl.java
index 2e3f19451dff..25de66311ee1 100644
--- a/python/src/com/jetbrains/python/psi/types/PyClassTypeImpl.java
+++ b/python/src/com/jetbrains/python/psi/types/PyClassTypeImpl.java
@@ -196,6 +196,9 @@ public class PyClassTypeImpl extends UserDataHolderBase implements PyClassType {
     if (inherited) {
       for (PyClassLikeType type : myClass.getAncestorTypes(context)) {
         if (type instanceof PyClassType) {
+          if (!myIsDefinition) {
+            type = type.toInstance();
+          }
           PsiElement superMember = resolveClassMember(((PyClassType)type).getPyClass(), myIsDefinition, name, null);
           if (superMember != null) {
             return ResolveResultList.to(superMember);
diff --git a/python/testData/inspections/PyUnresolvedReferencesInspection/metaClassMembers.py b/python/testData/inspections/PyUnresolvedReferencesInspection/metaClassMembers.py
new file mode 100644
index 000000000000..fe4cb2b00040
--- /dev/null
+++ b/python/testData/inspections/PyUnresolvedReferencesInspection/metaClassMembers.py
@@ -0,0 +1,16 @@
+class GenericMeta(type):
+    def __getitem__(self, args):
+        pass
+
+
+class Generic(object):
+    __metaclass__ = GenericMeta
+
+
+class C(Generic['foo']):
+    pass
+
+
+print(C['bar'])
+c = C()
+print(c<warning descr="Class 'C' does not define '__getitem__', so the '[]' operator cannot be used on its instances">[</warning>'baz'])
diff --git a/python/testSrc/com/jetbrains/python/inspections/PyUnresolvedReferencesInspectionTest.java b/python/testSrc/com/jetbrains/python/inspections/PyUnresolvedReferencesInspectionTest.java
index 530f3c8bd4c5..35097e0ea6c3 100644
--- a/python/testSrc/com/jetbrains/python/inspections/PyUnresolvedReferencesInspectionTest.java
+++ b/python/testSrc/com/jetbrains/python/inspections/PyUnresolvedReferencesInspectionTest.java
@@ -431,6 +431,10 @@ public class PyUnresolvedReferencesInspectionTest extends PyInspectionTestCase {
     assertTrue(JDOMUtil.writeElement(serialized).contains("foo.Bar.*"));
   }
 
+  public void testMetaClassMembers() {
+    doTest();
+  }
+
   @NotNull
   @Override
   protected Class<? extends PyInspection> getInspectionClass() {