testsuite: fix constexpr-is_literal.C deprecated c++17 and above.

std::is_literal_type is deprecated in C++17 and above.

This was introduced in c++11, but the testsuite list of standards now only
includes c++98 and c++14.  This patch limits the test to c++14_only to
prevent deprecation warnings.

gcc/testsuite/ChangeLog

2020-06-30  David Edelsohn  <dje.gcc@gmail.com>

	* g++.dg/cpp0x/constexpr-is_literal.C: Limit test to -std=c++14.

diff --git a/gcc/testsuite/g++.dg/cpp0x/constexpr-is_literal.C b/gcc/testsuite/g++.dg/cpp0x/constexpr-is_literal.C
index f255b8d15070f12b2b34a90314d57fce1cfb101c..02d2ca35298cb148d9127c4ed2e2869189d61756 100644 (file)
--- a/gcc/testsuite/g++.dg/cpp0x/constexpr-is_literal.C
+++ b/gcc/testsuite/g++.dg/cpp0x/constexpr-is_literal.C
@@ -1,4 +1,4 @@
-// { dg-do compile { target c++11 } }
+// { dg-do compile { target c++14_only } }
 
 #include <type_traits>