On 2023-06-14 23:46, Bruno Haible wrote:
- fprintf (fp, "%u\n", (unsigned int) (((bits ^ (bits - 1)) + 1)
>> 1));
+ fprintf (fp, "%u", (unsigned int) (((bits ^ (bits - 1)) + 1) >>
1));
This sort of change relies on undefined behavior in POSIX. In the POSIX
shell, a command like A=$(B) requires B to output text, and a nonempty
text file must end in a newline.
To avoid this issue the program could use 'fopen (..., "wb")'.
We could just leave things alone, as I don't know of any POSIXish
systems that would mishandle files lacking trailing newlines in this
situation. However, the "wb" approach" is a bit cleaner.
