Add -fdelete-null-pointer-checks to more new C++ testcases.

2020-02-13  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/testsuite/
	* g++.dg/cpp0x/constexpr-static13.C:
	Add -fdelete-null-pointer-checks.
	* g++.dg/cpp2a/constexpr-new11.C: Likewise.
	* g++.dg/cpp2a/constexpr-new12.C: Likewise.

gcc/testsuite/ChangeLog

+2020-02-13  Sandra Loosemore  <sandra@codesourcery.com>
+
+	* g++.dg/cpp0x/constexpr-static13.C:
+	Add -fdelete-null-pointer-checks.
+	* g++.dg/cpp2a/constexpr-new11.C: Likewise.
+	* g++.dg/cpp2a/constexpr-new12.C: Likewise.
+
 2020-02-13  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR target/93656

gcc/testsuite/g++.dg/cpp0x/constexpr-static13.C

 // PR c++/92003
 // { dg-do compile { target c++11 } }
+// { dg-additional-options "-fdelete-null-pointer-checks" }
 // { dg-prune-output "narrowing conversion" }
 
 constexpr char const* get_c_str() { return "abc"; }

gcc/testsuite/g++.dg/cpp2a/constexpr-new11.C

 // PR c++/93633
 // { dg-do compile { target c++2a } }
+// { dg-additional-options "-fdelete-null-pointer-checks" }
 
 struct A {
   constexpr A () : a (0) {}

gcc/testsuite/g++.dg/cpp2a/constexpr-new12.C

 // PR c++/93633
 // { dg-do compile { target c++2a } }
+// { dg-additional-options "-fdelete-null-pointer-checks" }
 
 struct A {
   constexpr A () : a (0) {}