AutoupdatingCurrentLocale + Autolayout = Crash on 64-bit iOS 7

Originator:an00na
Number:rdar://18314168 Date Originated:11-Sep-2014 07:18 PM
Status:Open Resolved:
Product:iOS SDK Product Version:7
Classification:Serious Bug Reproducible:Always
 
Summary:
This is a bizarre crash that costed me 10 hours to track down.

It is caused by assigning a string derived from [uppercaseStringWithLocale:[NSLocale autoupdatingCurrentLocale]] to a label in a auto-layouted UITableViewHeaderFooterView.

In my test, it only occurs on 64-bit iOS 7.

Steps to Reproduce:
1. Launch sample app.
2. Tap any cell.
3. Navigate back.
4. Repeat 2~3 until you see the crash.
5. #define USE_AUTOUPDATING_LOCALE 0 and repeat 1~4 to see the crash go away.
6. Or, #define USE_AUTOLAYOUT 0 and repeat 1~4 to see the crash go away.

Expected Results:
No crash.

Actual Results:
Crash.

Version:
iOS 7

Notes:


Configuration:
64-bit devices or simulator


Sample project: http://cl.ly/111i3j2I1Z3G

Comments


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