Two NSDocument instances on same URL cause deadlock

Originator:maxseelemann
Number:rdar://12176626 Date Originated:26-Aug-2012 08:45 PM
Status:Open Resolved:
Product:Mac OS X SDK Product Version:10.8.x
Classification:Crash/Hang/Data Loss Reproducible:Always
 
Summary:
Opening two NSDocument instances for the same URL causes a deadlock on any file change.

Steps to Reproduce:
- Open TextEdit
- Open new file, save as "A.rtf", leave open
- Open another file, save as "A.rtf"
- Click "Replace"
- See hang

Expected Results:
- Anything but a hang.

Actual Results:
- A hang

Regression:
This is sooo trivial to create. Affects EVERY app using NSDocument that uses file coordination. I assume there's a dead lock on the re-import of data into the first document.

Comments

Already exists on OS X 10.7.5 Lion

FYI this bug is already present on 10.7.5, I cannot verify for the previous versions of Lion. Also, I occurs on both sandboxed or not sandboxed apps.

By micha at Dec. 18, 2012, 11:13 a.m. (reply...)

Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!