diff -r 5ff1fc726848 -r c6bca38c1cbf parts/django/tests/regressiontests/m2m_regress/models.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parts/django/tests/regressiontests/m2m_regress/models.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,58 @@
+from django.db import models
+from django.contrib.auth import models as auth
+
+# No related name is needed here, since symmetrical relations are not
+# explicitly reversible.
+class SelfRefer(models.Model):
+    name = models.CharField(max_length=10)
+    references = models.ManyToManyField('self')
+    related = models.ManyToManyField('self')
+
+    def __unicode__(self):
+        return self.name
+
+class Tag(models.Model):
+    name = models.CharField(max_length=10)
+
+    def __unicode__(self):
+        return self.name
+
+# Regression for #11956 -- a many to many to the base class
+class TagCollection(Tag):
+    tags = models.ManyToManyField(Tag, related_name='tag_collections')
+
+    def __unicode__(self):
+        return self.name
+
+# A related_name is required on one of the ManyToManyField entries here because
+# they are both addressable as reverse relations from Tag.
+class Entry(models.Model):
+    name = models.CharField(max_length=10)
+    topics = models.ManyToManyField(Tag)
+    related = models.ManyToManyField(Tag, related_name="similar")
+
+    def __unicode__(self):
+        return self.name
+
+# Two models both inheriting from a base model with a self-referential m2m field
+class SelfReferChild(SelfRefer):
+    pass
+
+class SelfReferChildSibling(SelfRefer):
+    pass
+
+# Many-to-Many relation between models, where one of the PK's isn't an Autofield
+class Line(models.Model):
+    name = models.CharField(max_length=100)
+
+class Worksheet(models.Model):
+    id = models.CharField(primary_key=True, max_length=100)
+    lines = models.ManyToManyField(Line, blank=True, null=True)
+
+# Regression for #11226 -- A model with the same name that another one to
+# which it has a m2m relation. This shouldn't cause a name clash between
+# the automatically created m2m intermediary table FK field names when
+# running syncdb
+class User(models.Model):
+    name = models.CharField(max_length=30)
+    friends = models.ManyToManyField(auth.User)