From 3ef66b4b0f517a40f12410a224a80c30363ed012 Mon Sep 17 00:00:00 2001
From: Jean-Louis Leroy <jl@leroy.nyc>
Date: Fri, 31 Oct 2025 13:13:22 -0400
Subject: [PATCH] work around old compiler constexpr glitch

---
 include/boost/openmethod/initialize.hpp | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/include/boost/openmethod/initialize.hpp b/include/boost/openmethod/initialize.hpp
index 7f829d8..6862cc3 100644
--- a/include/boost/openmethod/initialize.hpp
+++ b/include/boost/openmethod/initialize.hpp
@@ -476,14 +476,13 @@ void registry<Policies...>::compiler<Options...>::initialize() {
     registry<Policies...>::initialized = true;
 }
 
-#ifdef _MSC_VER
 namespace detail {
 
 template<bool HasTrace, typename T>
-struct msvc_tuple_get;
+struct tuple_get;
 
 template<typename T>
-struct msvc_tuple_get<true, T> {
+struct tuple_get<true, T> {
     template<class Tuple>
     static decltype(auto) fn(const Tuple& t) {
         return std::get<T>(t);
@@ -491,26 +490,20 @@ struct msvc_tuple_get<true, T> {
 };
 
 template<typename T>
-struct msvc_tuple_get<false, T> {
+struct tuple_get<false, T> {
     template<class Tuple>
     static decltype(auto) fn(const Tuple&) {
         return T();
     }
 };
 } // namespace detail
-#endif
 
 template<class... Policies>
 template<class... Options>
 registry<Policies...>::compiler<Options...>::compiler(Options... opts)
     : options(opts...) {
     if constexpr (has_trace) {
-#ifdef _MSC_VER
-        tr.on = detail::msvc_tuple_get<has_trace, trace>::fn(options).on;
-#else
-        // Even with the constexpr has_trace guard, msvc errors on this.
-        tr.on = std::get<trace>(options).on;
-#endif
+        tr.on = detail::tuple_get<has_trace, trace>::fn(options).on;
     }
 }