ipad - Firebase initWithUrl crashes on iOS 5.1 -


i'm developing firebase app use on old ipad first generation (ios 5.1.1). works fine on simulator , on other devices but, when load on ipad test, receive crash one:

#0  0x33860f86 in objc_msgsend () #1  0x33862f94 in objc_retain () #2  0x000d26a0 in -[frepomanager setqueue:] @ /users/mtse/dev/firebase/firebase-client-objc/firebase/firebase/core/frepomanager.m:24 #3  0x33fdc5aa in dispatch_once_f$variant$up () #4  0x000d1a80 in _dispatch_once [inlined] @ /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos8.1.sdk/usr/include/dispatch/once.h:68 #5  0x000d1a70 in +[frepomanager singleton] @ /users/mtse/dev/firebase/firebase-client-objc/firebase/firebase/core/frepomanager.m:37 #6  0x000e6736 in -[firebase initwithurl:] @ /users/mtse/dev/firebase/firebase-client-objc/firebase/firebase/firebase.m:54 #7  0x000c6f82 in -[appdelegate application:didfinishlaunchingwithoptions:] @ /xxx/appdelegate.m:25 #8  0x3337acaa in -[uiapplication _callinitializationdelegatesforurl:payload:suspended:] () #9  0x333747dc in -[uiapplication _runwithurl:payload:launchorientation:statusbarstyle:statusbarhidden:] () #10 0x33342ac2 in -[uiapplication handleevent:withnewevent:] () #11 0x33342566 in -[uiapplication sendevent:] () #12 0x33341f3a in _uiapplicationhandleevent () #13 0x3393422a in purpleeventcallback () #14 0x35c16522 in __cfrunloop_is_calling_out_to_a_source1_perform_function__ () #15 0x35c164c4 in __cfrunloopdosource1 () #16 0x35c15312 in __cfrunlooprun () #17 0x35b984a4 in cfrunlooprunspecific () #18 0x35b9836c in cfrunloopruninmode () #19 0x3337386a in -[uiapplication _run] () #20 0x33370cd4 in uiapplicationmain () #21 0x000c778c in main @ /xxx/main.m:14

this happens code reaches line:

    firebase *ref = [[firebase alloc] initwithurl:kfirebaseurl];

i tried downgrading firebase framework older ones problem persists. have -objc linker flag set too. ideas of how can solved?

sorry, ios 5.x no longer supported firebase sdk. can try old versions of sdk see if 1 works, offhand not know.


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