argmatch: port to C++

[gnulib.git] / doc / posix-functions / poll.texi

diff --git a/doc/posix-functions/poll.texi b/doc/posix-functions/poll.texi
index da619b9..ec1bdda 100644 (file)
--- a/doc/posix-functions/poll.texi
+++ b/doc/posix-functions/poll.texi
@@ -10,7 +10,7 @@ Portability problems fixed by Gnulib:
 @itemize
 @item
 This function is missing on some platforms:
-mingw, MSVC 9, BeOS.
+mingw, MSVC 9, BeOS, HP NonStop.
 @item
 This function doesn't work on special files like @file{/dev/null} and ttys like
 @file{/dev/tty} on some platforms:
@@ -27,4 +27,8 @@ created by the @code{socket} function, not on regular file descriptors.
 Under Windows, when passing a pipe, Gnulib's @code{poll} replacement might
 return 0 even before the timeout has passed.  Programs using it with pipes can
 thus busy wait.
+
+@item
+Under HP NonStop, file descriptors other than sockets do not support
+POLLHUP; they will return a "readable" status instead.
 @end itemize