From a921676b77268d614a4544ba13431d5340a1b5fb Mon Sep 17 00:00:00 2001
From: Andreas Tsouchlos <an.tsouchlos@gmail.com>
Date: Tue, 15 Feb 2022 10:29:23 +0100
Subject: [PATCH] Reintroduced previously erroneously removed memcpy

---
 const_fmt/format_impl.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/const_fmt/format_impl.h b/const_fmt/format_impl.h
index 425aaa1..2f8e822 100644
--- a/const_fmt/format_impl.h
+++ b/const_fmt/format_impl.h
@@ -95,6 +95,10 @@ constexpr inline const char* digits2_base(size_t value) {
 
 
 constexpr inline void copy2(char* dst, const char* src) {
+    if (!std::is_constant_evaluated()) {
+        std::memcpy(dst, src, 2);
+        return;
+    }
     *dst++ = static_cast<char>(*src++);
     *dst   = static_cast<char>(*src);
 }