pthread_sigmask: Work around Cygwin bug.

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

diff --git a/doc/posix-functions/vwprintf.texi b/doc/posix-functions/vwprintf.texi
index e82834a5651964ca8fe99a0affd03ba7dd552fa5..9f3e3b88de5d0d8707df9a51f8e86ad7d1d17680 100644 (file)
--- a/doc/posix-functions/vwprintf.texi
+++ b/doc/posix-functions/vwprintf.texi
@@ -22,4 +22,8 @@ platforms: Cygwin 1.5.x.
 @item
 On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
 accommodate all Unicode characters.
+@item
+On some platforms, this function does not set @code{errno} or the
+stream error indicator on attempts to write to a read-only stream:
+Cygwin 1.7.9.
 @end itemize