From 456fdda6c2eccb89ddd4da13a7f86be5959d5d13 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Sat, 22 Jul 2017 15:40:22 -0400
Subject: [PATCH] Ensured that the mark_end step can't overwrite another
 recognised symbol.

---
 Storage/Tape/Parsers/TapeParser.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Storage/Tape/Parsers/TapeParser.hpp b/Storage/Tape/Parsers/TapeParser.hpp
index c696b205d..4ae1d092f 100644
--- a/Storage/Tape/Parsers/TapeParser.hpp
+++ b/Storage/Tape/Parsers/TapeParser.hpp
@@ -35,7 +35,7 @@ template <typename SymbolType> class Parser {
 			while(!has_next_symbol_ && !tape->is_at_end()) {
 				process_pulse(tape->get_next_pulse());
 			}
-			if(tape->is_at_end()) mark_end();
+			if(!has_next_symbol_ && tape->is_at_end()) mark_end();
 			has_next_symbol_ = false;
 			return next_symbol_;
 		}