id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
27544	F() Expressions updating dates in .update() field fails	Gary Graham	nobody	"Upon upgrading from 1.8 -> 1.10, I noticed that some code I had written now threw an error.  Specifically, attempting to update datetime field's via F expression.

Bisect log, about 3000 commits back -> https://dpaste.de/HGYb

Branch with test showing regression -> https://github.com/tadgh/django/commit/c31133261c68b10525b8e3b34e6895a0c6ece4d0

Apparent first commit where regression occurs -> https://github.com/django/django/pull/4601/commits/ed83881e648771d22658f21b939f66e75c499864

Stacktrace from failure -> https://dpaste.de/DkSV"	Bug	new	Uncategorized	1.10	Normal		F()		Unreviewed	0	0	0	0	0	0