From e878837b954a2831c6ed58aca5ba3b6096b98a1a Mon Sep 17 00:00:00 2001
From: otya128 <otya128@users.noreply.github.com>
Date: Sat, 3 Sep 2016 17:33:52 +0900
Subject: [PATCH] =?UTF-8?q?HEX$=E3=81=AE=E6=A1=81=E6=95=B0=E3=81=8C?=
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---
 SMILEBASIC/builtinfunctions.d | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SMILEBASIC/builtinfunctions.d b/SMILEBASIC/builtinfunctions.d
index dc10ef0..cf7496a 100644
--- a/SMILEBASIC/builtinfunctions.d
+++ b/SMILEBASIC/builtinfunctions.d
@@ -880,7 +880,7 @@ class BuiltinFunction
     static wstring HEX(int val, DefaultValue!(int, false) digits)
     {
         import std.format;
-        if(digits > 8)
+        if(digits > 8 || digits < 0)
         {
             throw new OutOfRange();
         }