5 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/close.html}
9 Portability problems fixed by Gnulib:
12 This function is declared in a different header file (namely, @code{<io.h>})
16 This function crashes when invoked with invalid arguments on some platforms:
19 On Windows platforms (excluding Cygwin), @code{socket} and @code{accept}
20 do not return file descriptors that can be closed by @code{close}.
21 Instead, @code{closesocket} must be used.
24 Portability problems not fixed by Gnulib: