Solution
This error occurs in the sprintf() function because the resulting string that the function produces is larger than the lineBuffer.
lineBuffer is defined this way: char lineBuffer[n], where n is the number set for the length of the buffer, so if the length of characters is above n, this error will be triggered.
There are several approaches to solve this:
- Increase the lineBuffer size. You can put a large number if you believe you'll have larger names.
- Use snprintf() instead. This function allows you to define a max length for the resulting string:
snprintf(lineBuffer, sizeof(lineBuffer)); Here, we define that the resulting string has a maximum length of the size of the buffer. This prevents writing beyond the buffer even if the string is too long.
- Define the buffer size dynamically
- Instead of using a fixed size, in case the needed size depends on other variables you can allocate memory for it based on the worse case like in this example:
