From 240ec3a460c6a4a1005b5f4a9dd9d97eacf555f5 Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Wed, 20 Oct 2021 19:58:31 +0200
Subject: [PATCH] build: CTAD for quantity is not supported by clang

---
 src/core/include/units/quantity.h       | 2 ++
 test/unit_test/static/quantity_test.cpp | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/src/core/include/units/quantity.h b/src/core/include/units/quantity.h
index a5ebf3ce..ee879311 100644
--- a/src/core/include/units/quantity.h
+++ b/src/core/include/units/quantity.h
@@ -383,8 +383,10 @@ public:
 };
 
 // CTAD
+#if !UNITS_COMP_CLANG || UNITS_COMP_CLANG > 13
 template<typename D, typename U, typename Rep>
 explicit(false) quantity(Rep&&) -> quantity<D, U, Rep>;
+#endif
 
 template<Representation Rep>
 explicit(false) quantity(Rep) -> quantity<dim_one, one, Rep>;
diff --git a/test/unit_test/static/quantity_test.cpp b/test/unit_test/static/quantity_test.cpp
index d00d03d2..2560c142 100644
--- a/test/unit_test/static/quantity_test.cpp
+++ b/test/unit_test/static/quantity_test.cpp
@@ -273,8 +273,10 @@ static_assert(get_length_derived_quantity() == 1_q_m);
 // CTAD
 /////////
 
+#if !UNITS_COMP_CLANG || UNITS_COMP_CLANG > 13
 static_assert(std::is_same_v<decltype(units::aliases::isq::si::m(123))::rep, int>);
 static_assert(std::is_same_v<decltype(units::aliases::isq::si::m(123.))::rep, double>);
+#endif
 
 static_assert(is_same_v<decltype(quantity{length<metre, int>(123)}), length<metre, int>>);
 static_assert(is_same_v<decltype(quantity{speed<metre_per_second>(123)}), speed<metre_per_second>>);