From 5af775ba8799e323b04353323afcdbe76a049e7d Mon Sep 17 00:00:00 2001
From: Enno Rehling <enno.rehling@gmail.com>
Date: Sun, 6 May 2018 16:35:23 +0200
Subject: [PATCH] prevent out-of-bounds read.

---
 src/magic.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/magic.c b/src/magic.c
index a8190dfa8..80f528de8 100644
--- a/src/magic.c
+++ b/src/magic.c
@@ -1943,7 +1943,9 @@ static spellparameter *add_spellparameter(region * target_r, unit * u,
             break;
         case 'r':
             /* Parameter sind zwei Regionskoordinaten innerhalb der "normalen" Plane */
-            j = addparam_region(param + i, &spobj, u, ord);
+            if (i + 1 < size) {
+                j = addparam_region(param + i, &spobj, u, ord);
+            }
             ++c;
             break;
         case 'b':