From a97ca224f23b4101e44c099dbe29d1cc4a72c758 Mon Sep 17 00:00:00 2001
From: Li Jin <dragon-fly@qq.com>
Date: Thu, 26 Mar 2020 14:12:43 +0800
Subject: add REPL support for moonp.

---
 src/MoonP/moon_parser.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/MoonP')

diff --git a/src/MoonP/moon_parser.cpp b/src/MoonP/moon_parser.cpp
index 872e30e..58f8fb3 100644
--- a/src/MoonP/moon_parser.cpp
+++ b/src/MoonP/moon_parser.cpp
@@ -646,7 +646,7 @@ std::string ParseInfo::errorMessage(std::string_view msg, const input_range* loc
 	int oldCol = loc->m_begin.m_col;
 	int col = std::max(0, oldCol - 1);
 	auto it = begin;
-	for (int i = 0; i < oldCol; ++i) {
+	for (int i = 0; i < oldCol && it != end; ++i) {
 		if (*it > ASCII) {
 			++col;
 		}
-- 
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