X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;f=doc%2Fposix-functions%2Fpoll.texi;h=ec1bdda9cd7c635e7247e77dbafc2402e4aa1ff1;hb=6e5f53c09490a510344a65d26f5e3989a048fcdf;hp=1c3da5bb2caa4ef37017b1b3762a08f12cffcbfd;hpb=06b335ade65c8fe60fee8b9e18b670bb54ed924a;p=gnulib.git

diff --git a/doc/posix-functions/poll.texi b/doc/posix-functions/poll.texi
index 1c3da5bb2..ec1bdda9c 100644
--- 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:
@@ -19,4 +19,16 @@ Mac OS X 10.4.0, AIX 5.3.
 
 Portability problems not fixed by Gnulib:
 @itemize
+@item
+Under BeOS, Gnulib's @code{poll} replacement can only be called on descriptors
+created by the @code{socket} function, not on regular file descriptors.
+
+@item
+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