remainderf: Override buggy system function on IRIX 6.5.

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

diff --git a/doc/posix-functions/putchar_unlocked.texi b/doc/posix-functions/putchar_unlocked.texi
index 5bf55b3..f0fe807 100644 (file)
--- a/doc/posix-functions/putchar_unlocked.texi
+++ b/doc/posix-functions/putchar_unlocked.texi
@@ -14,5 +14,9 @@ Portability problems not fixed by Gnulib:
 @itemize
 @item
 This function is missing on some platforms:
-mingw.
+Minix 3.1.8, mingw, MSVC 9.
+@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