From bccf89c05b5b1fce89a6b087e8134d986ccb19c5 Mon Sep 17 00:00:00 2001
From: Kristaps Dzonsons <kristaps@bsd.lv>
Date: Tue, 25 Nov 2008 12:51:17 +0000
Subject: Protection against non-ascii.

---
 libmdocml.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/libmdocml.c b/libmdocml.c
index 42e79584..910f409d 100644
--- a/libmdocml.c
+++ b/libmdocml.c
@@ -1,4 +1,4 @@
-/* $Id: libmdocml.c,v 1.9 2008/11/24 14:24:55 kristaps Exp $ */
+/* $Id: libmdocml.c,v 1.10 2008/11/25 12:51:17 kristaps Exp $ */
 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -17,6 +17,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 #include <assert.h>
+#include <ctype.h>
 #include <fcntl.h>
 #include <err.h>
 #include <stdio.h>
@@ -188,6 +189,11 @@ again:
 		return(md_run_leave(args, mbuf, rbuf, 0, p));
 
 	for (i = 0; i < sz; i++) {
+		if ( ! isascii(rbuf->buf[i])) {
+			warnx("%s: non-ascii char (line %zu, col %zu)",
+					rbuf->name, rbuf->line, pos);
+			return(md_run_leave(args, mbuf, rbuf, -1, p));
+		}
 		if ('\n' != rbuf->buf[i]) {
 			if (pos < BUFFER_LINE) {
 				/* LINTED */
-- 
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