From 2e60941a2ef74df349699d98cd6ea842f2f3cad0 Mon Sep 17 00:00:00 2001
From: Matt Borland <matt@mattborland.com>
Date: Tue, 21 Feb 2023 09:49:32 -0800
Subject: [PATCH] Add static_assert for sizeof uchar_values array

---
 include/boost/charconv/from_chars.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/boost/charconv/from_chars.hpp b/include/boost/charconv/from_chars.hpp
index 4fe1f93..ae1d6cb 100644
--- a/include/boost/charconv/from_chars.hpp
+++ b/include/boost/charconv/from_chars.hpp
@@ -12,7 +12,6 @@
 #include <boost/config.hpp>
 #include <type_traits>
 #include <limits>
-#include <array>
 #include <cstdlib>
 #include <cerrno>
 #include <cstddef>
@@ -63,6 +62,8 @@ static constexpr unsigned char uchar_values[] =
       255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
       255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255};
 
+static_assert(sizeof(uchar_values) == 256, "uchar_values should represent all 256 values of unsigned char");
+
 // Convert characters for 0-9, A-Z, a-z to 0-35. Anything else is 255
 constexpr unsigned char digit_from_char(char val) noexcept
 {