strchrnul: 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..604507d30c7eb5a7ede30e832cd7046af50cdfce 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}: