Added test to demonstrate issue 11387 isn't there anymore.

Thanks adurdin for the report and patch. Fixes #11387.

tests/regressiontests/generic_relations_regress/models.py

@@ -6,7 +6,7 @@ from django.utils.encoding import python_2_unicode_compatible
 
 __all__ = ('Link', 'Place', 'Restaurant', 'Person', 'Address',
            'CharLink', 'TextLink', 'OddRelation1', 'OddRelation2',
-           'Contact', 'Organization', 'Note')
+           'Contact', 'Organization', 'Note', 'Company')
 
 @python_2_unicode_compatible
 class Link(models.Model):
@@ -84,3 +84,10 @@ class Organization(models.Model):
     name = models.CharField(max_length=255)
     contacts = models.ManyToManyField(Contact, related_name='organizations')
 
+@python_2_unicode_compatible
+class Company(models.Model):
+    name = models.CharField(max_length=100)
+    links = generic.GenericRelation(Link)
+
+    def __str__(self):
+        return "Company: %s" % self.name

tests/regressiontests/generic_relations_regress/tests.py

@@ -2,7 +2,7 @@ from django.db.models import Q
 from django.test import TestCase
 
 from .models import (Address, Place, Restaurant, Link, CharLink, TextLink,
-    Person, Contact, Note, Organization, OddRelation1, OddRelation2)
+    Person, Contact, Note, Organization, OddRelation1, OddRelation2, Company)
 
 
 class GenericRelationTests(TestCase):
@@ -80,3 +80,21 @@ class GenericRelationTests(TestCase):
         )
         self.assertEqual(str(qs.query).count('JOIN'), 2)
 
+    def test_generic_relation_ordering(self):
+        """
+        Test that ordering over a generic relation does not include extraneous
+        duplicate results, nor excludes rows not participating in the relation.
+        """
+        p1 = Place.objects.create(name="South Park")
+        p2 = Place.objects.create(name="The City")
+        c = Company.objects.create(name="Chubby's Intl.")
+        l1 = Link.objects.create(content_object=p1)
+        l2 = Link.objects.create(content_object=c)
+
+        places = list(Place.objects.order_by('links__id'))
+        def count_places(place):
+            return len(filter(lambda p: p.id == place.id, places))
+
+        self.assertEqual(len(places), 2)
+        self.assertEqual(count_places(p1), 1)
+        self.assertEqual(count_places(p2), 1)