From b7b740a04c3f599c518bdfa606812e75acfc9d80 Mon Sep 17 00:00:00 2001
From: Sigrid <ftrvxmtrx@gmail.com>
Date: Mon, 28 Dec 2020 21:21:22 +0100
Subject: text2post: check font index for out of range

---
 sys/src/cmd/postscript/text2post/text2post.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sys/src/cmd/postscript/text2post/text2post.c b/sys/src/cmd/postscript/text2post/text2post.c
index 963911305..b8f87994b 100644
--- a/sys/src/cmd/postscript/text2post/text2post.c
+++ b/sys/src/cmd/postscript/text2post/text2post.c
@@ -325,6 +325,11 @@ txt2post(void) {
 		thischar = r & 0xff;
 		thisfont = (r>>8) & 0xff;
 
+		if (thisfont >= FONTABSIZE) {
+			Bprint(Bstderr, "font out of range\n");
+			exits("font");
+		}
+
 		if (line_no == 0 && char_no == 0)
 			startpage();
 
-- 
cgit v1.2.3