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
7844	Very small race condition in file field saving	Malcolm Tredinnick	nobody	"Noticed this whilst reading `Model._save_FIELD_file()` for another reason. The directory name used to save the file can be sensitive to the current datetime value, since `upload_to` directories can contain format strings. This directory name is computed a couple of times in this function, from what I can work out: once when creating the directories at the top of the function and once when call `field.get_filename()`.

It's possible that the time delay between creating the directory and using the directory lower down could be sufficiently long that the name actually changes. For example, using day-based formats and then clock crosses midnight. The directory name should be the same throughout the code."	Bug	closed	Core (Other)	dev	Normal	fixed			Accepted	0	0	0	0	0	0