https://pubs.opengroup.org/onlinepubs/9699919799/utilities/m...
If you don't use anything that is not there, or in a manner not covered by a requirement, you will likely have a highly portable result.
https://pubs.opengroup.org/onlinepubs/9699919799/utilities/m...
If you don't use anything that is not there, or in a manner not covered by a requirement, you will likely have a highly portable result.