wbuf.c.patch   [plain text]

--- wbuf.c.orig	2004-06-07 22:45:32.000000000 -0700
+++ wbuf.c	2004-10-25 00:49:10.000000000 -0700
@@ -41,6 +41,7 @@
 __FBSDID("$FreeBSD: src/lib/libc/stdio/wbuf.c,v 1.11 2004/06/08 05:45:32 das Exp $");
 
 #include <stdio.h>
+#include <errno.h>
 #include "local.h"
 
 /*
@@ -65,8 +66,10 @@
 	 * calls might wrap _w from negative to positive.
 	 */
 	fp->_w = fp->_lbfsize;
-	if (prepwrite(fp) != 0)
+	if (prepwrite(fp) != 0) {
+		errno = EBADF;
 		return (EOF);
+	}
 	c = (unsigned char)c;
 
 	ORIENT(fp, -1);