From d2331f58d70372e1bbfabdc10c284706194c42e4 Mon Sep 17 00:00:00 2001
From: Gary Talent <gary@drinkingtea.net>
Date: Wed, 21 Jan 2026 23:35:02 -0600
Subject: [PATCH] [ox/std] Add Union_c concept

(synced from 65e3153ddadf2d81c5b28bf2ab07d6a7fa3bd1c0)
---
 src/ox/std/concepts.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/ox/std/concepts.hpp b/src/ox/std/concepts.hpp
index 1cf0138b1..857e3c40c 100644
--- a/src/ox/std/concepts.hpp
+++ b/src/ox/std/concepts.hpp
@@ -32,4 +32,8 @@ concept Integral_c = ox::is_integral_v<T>;
 
 template<typename T, size_t max>
 concept IntegerRange_c = ox::is_integer_v<T> && ox::MaxValue<T> >= max;
+
+template<typename Union>
+concept Union_c = is_union_v<Union>;
+
 }