stdioext: Add tentative support for Plan9.

[gnulib.git] / lib / stdio-impl.h

diff --git a/lib/stdio-impl.h b/lib/stdio-impl.h
index a065c1a..4935795 100644 (file)
--- a/lib/stdio-impl.h
+++ b/lib/stdio-impl.h
@@ -26,6 +26,8 @@
 # include <sys/param.h>
 #endif
 
+#include <errno.h>                             /* For detecting Plan9.  */
+
 #if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
 
 # if defined __DragonFly__          /* DragonFly */