From d691c08d1c7d384b538862d1d8a67cbe6b4c0a0b Mon Sep 17 00:00:00 2001
From: Darkvater <Darkvater@openttd.org>
Date: Mon, 21 Feb 2005 19:14:16 +0000
Subject: (svn r1895) - Fix: add assert for charwidth getter just in case

---
 gfx.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/gfx.h b/gfx.h
index 58cf6dea9..965fd6e04 100644
--- a/gfx.h
+++ b/gfx.h
@@ -72,7 +72,11 @@ void ToggleFullScreen(const bool full_screen);
 #define ASCII_LETTERSTART 32
 VARDEF int _stringwidth_base;
 VARDEF byte _stringwidth_table[0x2A0];
-static inline byte GetCharacterWidth(int key) { return _stringwidth_table[key - ASCII_LETTERSTART];}
+static inline byte GetCharacterWidth(uint key)
+{
+	assert(key >= ASCII_LETTERSTART && key - ASCII_LETTERSTART < lengthof(_stringwidth_table));
+	return _stringwidth_table[key - ASCII_LETTERSTART];
+}
 
 VARDEF DrawPixelInfo _screen;
 VARDEF DrawPixelInfo *_cur_dpi;
-- 
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