From 94a8e93c4397e1140dd6de5db19d054df546419e Mon Sep 17 00:00:00 2001
From: John Darrington <john@darrington.wattle.id.au>
Date: Sat, 25 Feb 2012 12:15:03 +0100
Subject: [PATCH] ascii.c (ascii_reserve) Added assertion.

Added this assertion to catch a yet-to-be fixed array bounds bug.
---
 src/output/ascii.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/output/ascii.c b/src/output/ascii.c
index 1c3e6b8238..7804ade3f4 100644
--- a/src/output/ascii.c
+++ b/src/output/ascii.c
@@ -749,7 +749,9 @@ find_ascii_pos (struct ascii_line *line, int target_x, struct ascii_pos *c)
 static char *
 ascii_reserve (struct ascii_driver *a, int y, int x0, int x1, int n)
 {
-  struct ascii_line *line = &a->lines[y];
+  struct ascii_line *line;
+  assert (y < a->allocated_lines);
+  line = &a->lines[y];
 
   if (x0 >= line->width)
     {
-- 
2.30.2