IOS app crash automatically after start.

R_ram

After the app started and ui shown it waits for 15-20 secs and then it gets crashed with below error

libc++abi.dylib: terminating with uncaught exception of type QString

program received signal 6, thread:1351dd;qaddr:3b10cad0;00:00000000;01:00000000;02:00000000;03:03000000;04:06000000;05:dcc9103b;06:40880f3b;07:88933403;08:50146118;09:6f662074;0a:74700f3b;0b:708fea14;0c:48010000;0d:7c933403;0e:130da338;0f:fc0d9b38;10:10000000;metype:5;mecount:2;medata:10003;medata:6;
program received signal 6, thread:1351dd;qaddr:3b10cad0;00:00000000;01:00000000;02:00000000;03:ffffffff;04:06000000;05:dcc9103b;06:40880f3b;07:68933403;08:50146118;09:79b0a238;0a:74700f3b;0b:708fea14;0c:48010000;0d:5c933403;0e:130da338;0f:fc0d9b38;10:10000000;metype:5;mecount:2;medata:10003;medata:6;
program received signal 5, thread:1351dd;qaddr:3b10cad0;00:00000000;01:00000000;02:00000000;03:01000000;04:78933403;05:ffffffff;06:40880f3b;07:88933403;08:50146118;09:79b0a238;0a:74700f3b;0b:708fea14;0c:30000000;0d:70933403;0e:ab099538;0f:aa099538;10:30000040;metype:6;mecount:2;medata:1;medata:defe;
program received signal 5, thread:1351dd;qaddr:3b10cad0;00:00000000;01:00000000;02:00000000;03:01000000;04:78933403;05:ffffffff;06:40880f3b;07:88933403;08:50146118;09:79b0a238;0a:74700f3b;0b:708fea14;0c:30000000;0d:70933403;0e:ab099538;0f:aa099538;10:30000040;metype:6;mecount:2;medata:1;medata:defe;
program received signal 5, thread:1351dd;qaddr:3b10cad0;00:00000000;01:00000000;02:00000000;03:01000000;04:78933403;05:ffffffff;06:40880f3b;07:88933403;08:50146118;09:79b0a238;0a:74700f3b;0b:708fea14;0c:30000000;0d:70933403;0e:ab099538;0f:aa099538;10:30000040;metype:6;mecount:2;medata:1;medata:defe;
program received signal 5, thread:1351dd;qaddr:3b10cad0;00:00000000;01:00000000;02:00000000;03:01000000;04:78933403;05:ffffffff;06:40880f3b;07:88933403;08:50146118;09:79b0a238;0a:74700f3b;0b:708fea14;0c:30000000;0d:70933403;0e:ab099538;0f:aa099538;10:30000040;metype:6;mecount:2;medata:1;medata:defe;
hit maximum number of consecutive signals, stopping
Run ended.

My app has some functions which write log files. Does that cause any problem?

Now i'm using mac version 10.12.2, Xcode version-8.2.1, ios sdk version- 10.2, Qt version-5.8.0beta

Previously i run the same app using Qt5.6.0 but i run perfectly now facing some problem can't able to catch the root cause.

Thank you.

SGaist

Hi,

You should update Qt, 5.8.0 has been officially released.

R_ram

Thank you for your reply..

I download Qt5.8.0 but facing same issue with that also .

Is there any possible way to know why that happens?

SGaist

You would need to start your application with the debugger to get more informations about where it happens.

R_ram

Hi,

I run in debug mode only so that i catched the above error.
Does the latest xcode sdk supports to write some logs?
Because we are doing that in our application.

Thank you

SGaist

Are you doing any index based manipulation of your QString objects ? The error might indicate an index error.