#20470: Querying crashes with RuntimeError (dictionary changed size during
iteration)
-------------------------------------+-------------------------------------
     Reporter:  jpaalasm             |                    Owner:  nobody
         Type:  Bug                  |                   Status:  new
    Component:  Database layer       |                  Version:  1.5
  (models, ORM)                      |               Resolution:
     Severity:  Normal               |             Triage Stage:
     Keywords:                       |  Unreviewed
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------
Changes (by svisser):

 * needs_better_patch:   => 0
 * needs_tests:   => 0
 * needs_docs:   => 0


Comment:

 Some observations:

 - I couldn't reproduce this today on master with the given model and a few
 sample instances that I could think of.

 - The line `obj.where = copy.deepcopy(self.where, memo=memo)` (line 264 in
 `clone`) is present in Django 1.5 but no longer in master as it was
 rewritten for ticket #16759 (commit:
 
https://github.com/django/django/commit/23ca3a01940c63942885df4709712cebf4df79ec).

 So I think the problem isn't there anymore but if the bug can be
 demonstrated using a small test case then further investigation is needed.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/20470#comment:1>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.

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