Nswarn: nil string argument libc ++ abi. dylib: terminate_handler unexpectedly threw an exception, exceptionhandler

Nswarn: nil string argument libc ++ abi. dylib: terminate_handler unexpectedly threw an exception, exceptionhandler

Yes

20:12:51. 501 Pan doctor [5001: 299704] nssag: nil string argument

20:12:51. 502 Pan doctor [5001: 299704] nssag: nil string argument

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

Summary of error messages:

I couldn't find a good method when this error occurs, but then I found out:

It turns out that the NSString type variable I uploaded is empty. It turns out that I used a local variable in the code block. As a result, when I exit the code block, the memory is destroyed,

The memory is empty.

Solution:

1. Avoid using NSString * string = string2;

2. Avoid using NSString * string1 = [NSString stringWithFormat: @ ""];

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

For variables: it is best to use:

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

Format

// The above is my opinion. please correct me if you have any questions. Thank you. --- Xiaohongqi

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