Testsuite: Make dependence on -fdelete-null-pointer-checks explicit

nios2-elf target defaults to -fno-delete-null-pointer-checks, breaking
tests that implicitly depend on that optimization.  Add the option
explicitly on these tests.

2022-01-08  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/testsuite/
	* g++.dg/cpp0x/constexpr-compare1.C: Add explicit
	-fdelete-null-pointer-checks option.
	* g++.dg/cpp0x/constexpr-compare2.C: Likewise.
	* g++.dg/cpp0x/constexpr-typeid2.C: Likewise.
	* g++.dg/cpp1y/constexpr-94716.C: Likewise.
	* g++.dg/cpp1z/constexpr-compare1.C: Likewise.
	* g++.dg/cpp1z/constexpr-if36.C: Likewise.
	* gcc.dg/init-compare-1.c: Likewise.

	libstdc++-v3/
	* testsuite/18_support/type_info/constexpr.cc: Add explicit
	-fdelete-null-pointer-checks option.

7 files changed, 7 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/cpp0x/constexpr-compare1.C b/gcc/testsuite/g++.dg/cpp0x/constexpr-compare1.C
index ad650190..603c6d5 100644
--- a/gcc/testsuite/g++.dg/cpp0x/constexpr-compare1.C
+++ b/gcc/testsuite/g++.dg/cpp0x/constexpr-compare1.C
@@ -1,4 +1,5 @@
 // { dg-do compile { target c++11 } }
+// { dg-additional-options "-fdelete-null-pointer-checks" }
 
 extern int a, b;
 static_assert (&a == &a, "");
diff --git a/gcc/testsuite/g++.dg/cpp0x/constexpr-compare2.C b/gcc/testsuite/g++.dg/cpp0x/constexpr-compare2.C
index b1bc472..5c08dbb 100644
--- a/gcc/testsuite/g++.dg/cpp0x/constexpr-compare2.C
+++ b/gcc/testsuite/g++.dg/cpp0x/constexpr-compare2.C
@@ -1,5 +1,6 @@
 // PR c++/69681
 // { dg-do compile { target c++11 } }
+// { dg-additional-options "-fdelete-null-pointer-checks" }
 
 void f();
 void g();
diff --git a/gcc/testsuite/g++.dg/cpp0x/constexpr-typeid2.C b/gcc/testsuite/g++.dg/cpp0x/constexpr-typeid2.C
index 78c6b8e..8ab76f9 100644
--- a/gcc/testsuite/g++.dg/cpp0x/constexpr-typeid2.C
+++ b/gcc/testsuite/g++.dg/cpp0x/constexpr-typeid2.C
@@ -1,5 +1,6 @@
 // PR c++/103600
 // { dg-do compile { target c++11 } }
+// { dg-additional-options "-fdelete-null-pointer-checks" }
 
 #include <typeinfo>
 
diff --git a/gcc/testsuite/g++.dg/cpp1y/constexpr-94716.C b/gcc/testsuite/g++.dg/cpp1y/constexpr-94716.C
index 90173f3..5ac8720 100644
--- a/gcc/testsuite/g++.dg/cpp1y/constexpr-94716.C
+++ b/gcc/testsuite/g++.dg/cpp1y/constexpr-94716.C
@@ -1,5 +1,6 @@
 // PR c++/94716
 // { dg-do compile { target c++14 } }
+// { dg-additional-options "-fdelete-null-pointer-checks" }
 
 template <int> char v = 0;
 static_assert (&v<2> == &v<2>, "");
diff --git a/gcc/testsuite/g++.dg/cpp1z/constexpr-compare1.C b/gcc/testsuite/g++.dg/cpp1z/constexpr-compare1.C
index a53c03c..d40d536 100644
--- a/gcc/testsuite/g++.dg/cpp1z/constexpr-compare1.C
+++ b/gcc/testsuite/g++.dg/cpp1z/constexpr-compare1.C
@@ -1,4 +1,5 @@
 // { dg-do compile { target c++17 } }
+// { dg-additional-options "-fdelete-null-pointer-checks" }
 
 inline int a = 0;
 inline int b = 0;
diff --git a/gcc/testsuite/g++.dg/cpp1z/constexpr-if36.C b/gcc/testsuite/g++.dg/cpp1z/constexpr-if36.C
index 4a1b134..e425af2 100644
--- a/gcc/testsuite/g++.dg/cpp1z/constexpr-if36.C
+++ b/gcc/testsuite/g++.dg/cpp1z/constexpr-if36.C
@@ -3,6 +3,7 @@
 // weakness.
 
 // { dg-do compile { target c++17 } }
+// { dg-additional-options "-fdelete-null-pointer-checks" }
 
 extern void weakfn1 (void);
 extern void weakfn2 (void);
diff --git a/gcc/testsuite/gcc.dg/init-compare-1.c b/gcc/testsuite/gcc.dg/init-compare-1.c
index 9208b66..6737c85 100644
--- a/gcc/testsuite/gcc.dg/init-compare-1.c
+++ b/gcc/testsuite/gcc.dg/init-compare-1.c
@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+/* { dg-additional-options "-fdelete-null-pointer-checks" } */
 
 extern int a, b;
 int c = &a == &a;