how to debug EXC_CRASH (SIGTRAP)

Question

i\'m running my app are running fine until i resume from background or with out location services, the app will crash.

the crash log shows Exception Type: EXC_CRASH (SI

Answer 1

With Xcode 4.2 and iOS 5 uncaught exceptions do not seem to show in the console anymore. I would recommend adding the following or modifying your existing uncaught exception handler to dump the exceptions callstack for you.

#ifdef DEBUG
void eHandler(NSException *);

void eHandler(NSException *exception) {
    NSLog(@"%@", exception);
    NSLog(@"%@", [exception callStackSymbols]);
}
#endif

int main(int argc, char *argv[]) {

#ifdef DEBUG
    NSSetUncaughtExceptionHandler(&eHandler);
#endif

...rest of your main function here...

}