From 14451704d53ecb4ec996c6f9631d6a60dfbd2fb6 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <viz@meta.com>
Date: Sat, 22 Nov 2025 08:23:11 -0800
Subject: [PATCH] Opt out std::complex from tuple formatting

---
 include/fmt/std.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/fmt/std.h b/include/fmt/std.h
index 6dd56e28..33a21b6f 100644
--- a/include/fmt/std.h
+++ b/include/fmt/std.h
@@ -647,6 +647,11 @@ struct formatter<std::atomic_flag, Char> : formatter<bool, Char> {
 };
 #endif  // __cpp_lib_atomic_flag_test
 
+template <typename T> struct is_tuple_like;
+
+template <typename T>
+struct is_tuple_like<std::complex<T>> : std::false_type {};
+
 template <typename T, typename Char> struct formatter<std::complex<T>, Char> {
  private:
   detail::dynamic_format_specs<Char> specs_;