[gcc r15-1226] [libstdc++] [testsuite] require cmath for c++23 cmath tests

[Alexandre Oliva via Libstdc++-cvs]

https://gcc.gnu.org/g:5288935d30c4615cce664ca8fba65eecf05c326f

commit r15-1226-g5288935d30c4615cce664ca8fba65eecf05c326f
Author: Alexandre Oliva <ol...@adacore.com>
Date:   Wed Jun 12 19:48:06 2024 -0300

    [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.

Diff:
---
 libstdc++-v3/testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc | 1 +
 libstdc++-v3/testsuite/26_numerics/headers/cmath/functions_std_c++23.cc | 1 +
 libstdc++-v3/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>