From a413fcc9c46a020a746907136a384c227f3cd095 Mon Sep 17 00:00:00 2001
From: Thomas Khyn <thomas@ksytek.com>
Date: Thu, 20 Feb 2025 21:38:17 +1300
Subject: [PATCH] fix: use `inline` instead of `static` for constexpr in header
 file (#401)

Using `static constexpr` in a header file does not seem to be correct - see [1] - and generates a bug when building the magic_enum module with GCC 15

[1] https://isocpp.org/blog/2018/05/quick-q-use-of-constexpr-in-header-file
---
 include/magic_enum/magic_enum_containers.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/magic_enum/magic_enum_containers.hpp b/include/magic_enum/magic_enum_containers.hpp
index f817306..9a0208a 100644
--- a/include/magic_enum/magic_enum_containers.hpp
+++ b/include/magic_enum/magic_enum_containers.hpp
@@ -52,10 +52,10 @@ namespace magic_enum::containers {
 namespace detail {
 
 template <typename T, typename = void>
-static constexpr bool is_transparent_v{};
+inline constexpr bool is_transparent_v{};
 
 template <typename T>
-static constexpr bool is_transparent_v<T, std::void_t<typename T::is_transparent>>{true};
+inline constexpr bool is_transparent_v<T, std::void_t<typename T::is_transparent>>{true};
 
 template <typename Eq = std::equal_to<>, typename T1, typename T2>
 constexpr bool equal(T1&& t1, T2&& t2, Eq&& eq = {}) {