getopt-gnu: avoid crash in glibc getopt

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

diff --git a/doc/posix-functions/putchar.texi b/doc/posix-functions/putchar.texi
index aeb6b4307ccda8f1527d53968b35ebbbde4f3faa..2ded45a2aed46b23f8bf51faf7a136054c08c999 100644 (file)
--- a/doc/posix-functions/putchar.texi
+++ b/doc/posix-functions/putchar.texi
@@ -28,4 +28,8 @@ Portability problems not fixed by Gnulib:
 @item
 On Windows platforms (excluding Cygwin), this function does not set @code{errno}
 upon failure.
+@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