From 5288935d30c4615cce664ca8fba65eecf05c326f Mon Sep 17 00:00:00 2001
From: Alexandre Oliva <oliva@adacore.com>
Date: Wed, 12 Jun 2024 19:48:06 -0300
Subject: [PATCH] [libstdc++] [testsuite] require cmath for c++23 cmath tests

Some c++23 tests fail on targets that don't satisfy dg-require-cmath,
because referenced math functions don't get declared in std.  Add the
missing requirement.


for  libstdc++-v3/ChangeLog

	* testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc:
	Require cmath.
	* testsuite/26_numerics/headers/cmath/functions_std_c++23.cc:
	Likewise.
	* testsuite/26_numerics/headers/cmath/nextafter_c++23.cc:
	Likewise.
---
 .../testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc   | 1 +
 .../testsuite/26_numerics/headers/cmath/functions_std_c++23.cc   | 1 +
 .../testsuite/26_numerics/headers/cmath/nextafter_c++23.cc       | 1 +
 3 files changed, 3 insertions(+)

diff --git a/libstdc++-v3/testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc b/libstdc++-v3/testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc
index 0e3d112fe2e8..3c2377fd6987 100644
--- a/libstdc++-v3/testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc
+++ b/libstdc++-v3/testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-do link { target c++23 } }
+// { dg-require-cmath "" }
 
 #include <stdfloat>
 #include <cmath>
diff --git a/libstdc++-v3/testsuite/26_numerics/headers/cmath/functions_std_c++23.cc b/libstdc++-v3/testsuite/26_numerics/headers/cmath/functions_std_c++23.cc
index 000cebf364aa..ea68ac5da755 100644
--- a/libstdc++-v3/testsuite/26_numerics/headers/cmath/functions_std_c++23.cc
+++ b/libstdc++-v3/testsuite/26_numerics/headers/cmath/functions_std_c++23.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-do link { target c++23 } }
+// { dg-require-cmath "" }
 
 #include <stdfloat>
 #include <cmath>
diff --git a/libstdc++-v3/testsuite/26_numerics/headers/cmath/nextafter_c++23.cc b/libstdc++-v3/testsuite/26_numerics/headers/cmath/nextafter_c++23.cc
index 7d7e10bd8aea..91767d22cc3f 100644
--- a/libstdc++-v3/testsuite/26_numerics/headers/cmath/nextafter_c++23.cc
+++ b/libstdc++-v3/testsuite/26_numerics/headers/cmath/nextafter_c++23.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-do run { target c++23 } }
+// { dg-require-cmath "" }
 
 #include <stdfloat>
 #include <cmath>
-- 
2.47.2