Open Radar

 
Summary:

When trying to launch an application that was linked with libresolv.dylib in the iPhone Simulator 5.0 the app crashes with stack trace:

#0	0x00000000 in <????> ()
#1	0x94eaaef3 in mig_get_reply_port ()
#2	0x94ea470c in mach_ports_lookup ()
#3	0x00fbd124 in _xpc_domain_init_local ()
#4	0x00fbaeb1 in _libxpc_initializer ()
#5	0x8fe7d15b in __dyld__ZN16ImageLoaderMachO18doModInitFunctionsERKN11ImageLoader11LinkContextE ()
#6	0x8fe7ccc0 in __dyld__ZN16ImageLoaderMachO16doInitializationERKN11ImageLoader11LinkContextE ()
#7	0x8fe7a220 in __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE ()
#8	0x8fe7a1b6 in __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE ()
#9	0x8fe7a1b6 in __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE ()
#10	0x8fe7a1b6 in __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE ()
#11	0x8fe7a1b6 in __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE ()
#12	0x8fe7a1b6 in __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE ()
#13	0x8fe7a1b6 in __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE ()
#14	0x8fe7b1c0 in __dyld__ZN11ImageLoader15runInitializersERKNS_11LinkContextERNS_21InitializerTimingListE ()
#15	0x8fe6f656 in __dyld__ZN4dyld24initializeMainExecutableEv ()
#16	0x8fe73ef2 in __dyld__ZN4dyld5_mainEPK12macho_headermiPPKcS5_S5_ ()
#17	0x8fe6d2ef in __dyld__ZN13dyldbootstrap5startEPK12macho_headeriPPKclS2_ ()
#18	0x8fe6d063 in __dyld__dyld_start ()


Steps to Reproduce:

Create a new iPhone/iPad app using Xcode with any template.
Either
     add -lresolv to Other Linker Flags in Build Settings
Or
     add libresolv.dylib to the "Link Binary with Libraries" Build Phase

Build and Run the App in Simulator 5.0

Expected Results:

The App should not crash.

Actual Results:

The App crashes with aforementioned stack trace.

Regression:

The app works as expected in the iPhoneSimulator 4.3 that ships with Xcode 4.2
The app works as expected in all simulator versions I used before Xcode4.2
The app works as expected on a device with iOS 5.0
The app works as expected on a device with any iOS4.x
The app used to work as expected on devices with iOS 2.x - 3.x before I dropped support.

Notes: