From b4d13d060a7fb6d68b32820a71a39dadfe5e2678 Mon Sep 17 00:00:00 2001
From: Dennis Camera <dennis.camera+ladybird@riiengineering.ch>
Date: Thu, 4 Jul 2024 11:18:36 +0200
Subject: [PATCH] AK: Fix {:c} formatter for big-endian

---
 AK/Format.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/AK/Format.cpp b/AK/Format.cpp
index f8083a5ff59..04efdb3b79c 100644
--- a/AK/Format.cpp
+++ b/AK/Format.cpp
@@ -888,7 +888,12 @@ ErrorOr<void> Formatter<T>::format(FormatBuilder& builder, T value)
         m_mode = Mode::String;
 
         Formatter<StringView> formatter { *this };
-        return formatter.format(builder, StringView { reinterpret_cast<char const*>(&value), 1 });
+
+        // convert value to single byte, important for big-endian because the LSB is the last byte.
+        VERIFY(value >= 0 && value <= 127);
+        char const c = (value & 0x7f);
+
+        return formatter.format(builder, StringView { &c, 1 });
     }
 
     if (m_precision.has_value())