Appears nsscanner:nil string argument Libc++abi.dylib:terminate_handler unexpectedly threw an exception

Came up

2015-04-04 20:12:51.501 pan doctor [5001:299704] nsscanner:nil string argument

2015-04-04 20:12:51.502 pan doctor [5001:299704] nsscanner:nil string argument

Libc++abi.dylib:terminate_handler unexpectedly threw an exception

Summary of the error message:

I couldn't find a good way to do this, and then I found out:

It turned out to be my nsstring variable of type is empty, originally I used a local variable in the code block, resulting in the subsequent exit code block, memory destruction,

Causes memory to be empty.

The workaround is to:

1. Avoid using: nsstring* string = string2;

2. Avoid using: nsstring* string1 = [NSString stringwithformat:@ ""]; form

3. In the code block, be sure to consider whether the memory is destroyed in advance:

For variables: best to use:

nsstring* string1 = [NSString alloc] initwithformat:@ "%@", string2];

The form

Above is my own opinion, insufficient please correct me, thank you. ---Little red flag

QQ-651134397

Appears nsscanner:nil string argument Libc++abi.dylib:terminate_handler unexpectedly threw an exception