5 POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/fwrite.html}
7 Gnulib module: stdio, sigpipe
9 Portability problems fixed by Gnulib:
12 When writing to a pipe with no readers, this function fails, instead of
13 obeying the current @code{SIGPIPE} handler, on some platforms:
17 Portability problems not fixed by Gnulib:
20 On Windows platforms (excluding Cygwin), this function does not set @code{errno}