From 7ae2f5a4afcbb80c784a7971baf798fcfadae9dd Mon Sep 17 00:00:00 2001
From: Xiretza <xiretza@xiretza.xyz>
Date: Wed, 2 Dec 2020 21:18:50 +0100
Subject: [PATCH] day2/vhdl: workaround ghdl#1529

https://github.com/ghdl/ghdl/pull/1529
---
 2020/day2/vhdl/parser.vhd | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/2020/day2/vhdl/parser.vhd b/2020/day2/vhdl/parser.vhd
index 36392f9..4515735 100644
--- a/2020/day2/vhdl/parser.vhd
+++ b/2020/day2/vhdl/parser.vhd
@@ -30,7 +30,7 @@ architecture behaviour of parser is
 
 	function char_to_digit(input : in character) return digit is
 	begin
-		if input >= '0' and input <= '9' then
+		if not (input < '0') and input <= '9' then
 			return character'pos(input) - character'pos('0');
 		else
 			return 0;