LY_Print_RET determines that the function execution result is too absolute based on whether errno is 0.

[zhuxiaoyun138159]

The value in errno is significant only when the return value of the call indicated an error ; a function that succeeds is allowed to change errno.There is a high probability that the function is successfully executed but the value of errno is not 0.

[michalvasko]

Could you please be more specific, to what code exactly are you referring to?