From 912a1ddf68e1d1118cdbba2b9a6fcbf99e5b35b8 Mon Sep 17 00:00:00 2001
From: MistEO <mistereo@hotmail.com>
Date: Tue, 26 Dec 2023 16:15:37 +0800
Subject: [PATCH] sep

---
 include/json5.hpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/json5.hpp b/include/json5.hpp
index feb9da7..5e907c2 100644
--- a/include/json5.hpp
+++ b/include/json5.hpp
@@ -742,7 +742,10 @@ inline typename parser5<StringT>::u8char parser5<StringT>::peek(const StringIter
         head <<= 1;
         ++len;
         ch <<= 8;
-        ch += (uint8_t)(*(begin + len - 1));
+        auto sep = begin + len - 1;
+        if (sep < end) {
+            ch += (uint8_t)(*sep);
+        }
     }
     if (plen) {
         *plen = len;