get_or_create is unable to handle unicode characters

[Dave Naffziger]

Models.py:

class Article(models.Model):

headline = models.CharField(max_length=100)

Shell session:

from mysite.models import Article
string = u'\xae'
a = Article.objects.get_or_create(headline = string)
a

(<Article: Article object>, True)

a = Article.objects.get_or_create(headline = string)
a

(<Article: Article object>, True)

This seems to be recently introduced (I'm on 8125) and only noticed the bug after a recent update.

This is a pretty major bug and I ran out of time tonight to dig into it, but I wanted to at raise the issue now so that others can look at it.

This is going to create serious backwards incompatibility issues in people's databases if they are running with this bug.