From 0a9b0a7384e664126a3af418f047ef627c7ac279 Mon Sep 17 00:00:00 2001
From: Simon Tatham <anakin@pobox.com>
Date: Sat, 17 Apr 2010 13:27:15 +0000
Subject: Fix incorrect uses of ctype.h (passing it uncast chars, or other
 things potentially not in the range 0..255).

[originally from svn r8922]
---
 filling.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'filling.c')

diff --git a/filling.c b/filling.c
index 896fe41..b6d0ed1 100644
--- a/filling.c
+++ b/filling.c
@@ -1100,7 +1100,7 @@ static char *interpret_move(game_state *state, game_ui *ui, game_drawstate *ds,
         button = 0;
         break;
       default:
-        if (!isdigit(button)) return NULL;
+        if (button < '0' || button > '9') return NULL;
         button -= '0';
         if (button > (w == 2 && h == 2? 3: max(w, h))) return NULL;
     }
-- 
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