From b72309436dfd8385d94a74453a1f57cc27f20b88 Mon Sep 17 00:00:00 2001
From: Shawn Zhong <github@shawnzhong.com>
Date: Sat, 14 Jan 2023 01:23:44 -0600
Subject: [PATCH] Fix potential buffer overflow

---
 include/fmt/chrono.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/fmt/chrono.h b/include/fmt/chrono.h
index d3a9ec59c2c92..cf362f69bb063 100644
--- a/include/fmt/chrono.h
+++ b/include/fmt/chrono.h
@@ -705,8 +705,9 @@ FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin,
       continue;
     }
     if (begin != ptr) handler.on_text(begin, ptr);
-    c = *++ptr;  // consume '%'
+    ++ptr; // consume '%'
     if (ptr == end) FMT_THROW(format_error("invalid format"));
+    c = *ptr;
     switch (c) {
     case '_':
       pad = pad_type::space;