test-perror: relax test to ignore cygwin bug

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

diff --git a/doc/posix-functions/vdprintf.texi b/doc/posix-functions/vdprintf.texi
index 20a6ef7..8b06c3e 100644 (file)
--- a/doc/posix-functions/vdprintf.texi
+++ b/doc/posix-functions/vdprintf.texi
@@ -42,4 +42,8 @@ BeOS.
 
 Portability problems not fixed by Gnulib:
 @itemize
+@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