From 7abd3e368ab684491a09a789b53a89e86d1cda62 Mon Sep 17 00:00:00 2001
From: Jakob Gamper <97gamjak@gmail.com>
Date: Wed, 19 Aug 2026 11:59:12 +0200
Subject: [PATCH] fix bug requiring static cast to bool in requires

---
 CHANGELOG.md                       | 4 ++++
 include/mstd/types/strong_type.hpp | 6 +++---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 18c59e8..8c2affb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 
 ## Next Release
 
+### Types
+
+- as for requires g++ needs static cast to bool for flagset - this bug has been fixed
+
 <!-- insertion marker -->
 ## [0.2.0](https://github.com/repo/owner/releases/tag/0.2.0) - 2026-08-18
 
diff --git a/include/mstd/types/strong_type.hpp b/include/mstd/types/strong_type.hpp
index 304d199..f0d031f 100644
--- a/include/mstd/types/strong_type.hpp
+++ b/include/mstd/types/strong_type.hpp
@@ -100,13 +100,13 @@ namespace mstd
 
         [[nodiscard]]
         constexpr auto operator<=>(const StrongType &) const
-        requires(Traits &StrongTypeTrait::ORDERED &&
+        requires(static_cast<bool>(Traits &StrongTypeTrait::ORDERED) &&
                  std::three_way_comparable<T>)
         = default;
 
         [[nodiscard]]
         constexpr bool operator==(const StrongType &) const
-        requires(Traits &StrongTypeTrait::ORDERED &&
+        requires(static_cast<bool>(Traits &StrongTypeTrait::ORDERED) &&
                  std::equality_comparable<T>)
         = default;
 
@@ -178,7 +178,7 @@ std::ostream &operator<<(
     std::ostream                           &os,
     const mstd::StrongType<T, Tag, Traits> &strongType
 )
-requires(Traits &mstd::StrongTypeTrait::STREAMABLE && true)
+requires(static_cast<bool>(Traits &mstd::StrongTypeTrait::STREAMABLE) && true)
 {
     return os << strongType.get();
 }