Question

My Cocoa application works fine on Mac OS X 10.6, however if I try to run it under 10.7, it crashes with the following stack trace:

Thread 5 Crashed:
0   libicucore.A.dylib              0x9a860a07 0x9a7df000 + 530951
1   libicucore.A.dylib              0x9a861959 0x9a7df000 + 534873
2   libicucore.A.dylib              0x9a7e26fc uloc_canonicalize + 38
3   libicucore.A.dylib              0x9a7e5179 uloc_minimizeSubtags + 71
4   libicucore.A.dylib              0x9a7e4dda icu::Calendar::setWeekData(icu::Locale const&, char const*, UErrorCode&) + 242
5   libicucore.A.dylib              0x9a7e4cd7 icu::Calendar::Calendar(icu::TimeZone*, icu::Locale const&, UErrorCode&) + 161
6   libicucore.A.dylib              0x9a7e2c73 icu::GregorianCalendar::GregorianCalendar(icu::Locale const&, UErrorCode&) + 49
7   libicucore.A.dylib              0x9a7e2248 icu::Calendar::createInstance(icu::TimeZone*, icu::Locale const&, UErrorCode&) + 762
8   libicucore.A.dylib              0x9a7dfa8a ucal_open + 352
9   com.apple.CoreFoundation        0x9b2eb41e __CFCalendarCreateUCalendar + 430
10  com.apple.CoreFoundation        0x9b2eb1a9 CFCalendarCreateWithIdentifier + 537

Can you please tell me, if it possible to fix the problem without rebuilding application under 10.7? Maybe I should somehow statically link Cocoa libraries and frameworks I’m using?

Please help!

Answer 1

Actually the problem was related to NSLog class, which appears to be non-thread-safe in 10.7 for some stupid reason…