pthread_sigmask: Work around Cygwin bug.

[pspp] / doc / posix-functions / write.texi

diff --git a/doc/posix-functions/write.texi b/doc/posix-functions/write.texi
index 7587fbb9d97de68253befd2b34d3beac206e4028..e1059173399861fd7252e55b5557b300b4951813 100644 (file)
--- a/doc/posix-functions/write.texi
+++ b/doc/posix-functions/write.texi
@@ -13,6 +13,12 @@ When writing to a non-blocking pipe whose buffer is full, this function fails
 with @code{errno} being set to @code{ENOSPC} instead of @code{EAGAIN} on some
 platforms:
 mingw.
+@item
+When writing to a non-blocking pipe on which no reader is currently waiting
+an amount of bytes that exceeds the pipe buffer's size, then -- even if the
+pipe's buffer is empty -- this function fails, instead of performing a partial
+write into the pipe buffer, on some platforms:
+mingw.
 @end itemize
 
 Portability problems fixed by Gnulib module @code{stdio}, together with module @code{sigpipe}:
@@ -26,4 +32,11 @@ mingw.
 
 Portability problems not fixed by Gnulib:
 @itemize
+@item
+This function may fail with error @code{EINTR}, even in programs that don't
+install any signal handlers, on some platforms:
+MacOS X 10.5.
 @end itemize
+
+For handling @code{EINTR}, Gnulib provides a module @samp{safe-write} with a
+function @code{safe_write}.