From 50aac2ac92cd3defe2429110717a35f345691a36 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <viz@meta.com>
Date: Sat, 14 Sep 2024 08:07:39 -0700
Subject: [PATCH] Add reference to iterator_traits

---
 include/fmt/format.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/fmt/format.h b/include/fmt/format.h
index 3d019501..c2ee7102 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -117,6 +117,7 @@ namespace std {
 template <> struct iterator_traits<fmt::appender> {
   using iterator_category = output_iterator_tag;
   using value_type = char;
+  using reference = char&;
   using difference_type = ptrdiff_t;
 };
 }  // namespace std