poll (GNU Gnulib)

Gnulib module: poll

Portability problems fixed by Gnulib:

This function is missing on some platforms: mingw, MSVC 14, HP NonStop.
This function doesn’t work on special files like /dev/null and ttys like /dev/tty on some platforms: macOS 14, AIX 5.3.

Portability problems not fixed by Gnulib:

Under Windows, when passing a pipe, Gnulib’s poll replacement might return 0 even before the timeout has passed. Programs using it with pipes can thus busy wait.
On some platforms, file descriptors other than sockets do not support POLLHUP; they will return a "readable" or "writable" status instead: AIX 7.2, Cygwin 3.4.6, HP NonStop, mingw, MSVC.