diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 700b86ab135..ea4436c807c 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,20 @@
+2018-08-30  Sandra Loosemore  <sandra@codesourcery.com>
+
+	* g++.dg/cpp0x/noexcept30.C: Make dependence on
+	-fdelete-null-pointer-checks explicit.
+	* g++.dg/cpp1y/constexpr-82218.C: Likewise.
+	* g++.dg/expr/pmf-3.C: Likewise.
+	* g++.dg/ext/attr-returns-nonnull.C: Likewise.
+	* g++.dg/tree-ssa/lifetime-dse1.C: Likewise.
+	* g++.dg/tree-ssa/pr61034.C: Likewise.
+	* gcc.dg/addr_equal-1.c: Likewise.
+	* gcc.dg/ipa/pr85734.c: Likewise.
+	* gcc.dg/ipa/propmalloc-1.c: Likewise.
+	* gcc.dg/ipa/propmalloc-2.c: Likewise.
+	* gcc.dg/ipa/propmalloc-3.c: Likewise.
+	* gcc.dg/tree-ssa/pr78154.c: Likewise.
+	* gcc.dg/tree-ssa/pr83648.c: Likewise.
+
 2018-08-30  Martin Sebor  <msebor@redhat.com>
 
 	PR testsuite/87158
diff --git a/gcc/testsuite/g++.dg/cpp0x/noexcept30.C b/gcc/testsuite/g++.dg/cpp0x/noexcept30.C
index c51e94e7573..8c7ff2aad45 100644
--- a/gcc/testsuite/g++.dg/cpp0x/noexcept30.C
+++ b/gcc/testsuite/g++.dg/cpp0x/noexcept30.C
@@ -1,5 +1,6 @@
 // PR c++/69300
 // { dg-do compile { target c++11 } }
+// { dg-options "-fdelete-null-pointer-checks" }
 
 template<typename A>
 struct F {
diff --git a/gcc/testsuite/g++.dg/cpp1y/constexpr-82218.C b/gcc/testsuite/g++.dg/cpp1y/constexpr-82218.C
index 06507a9f437..eb8d1e040cc 100644
--- a/gcc/testsuite/g++.dg/cpp1y/constexpr-82218.C
+++ b/gcc/testsuite/g++.dg/cpp1y/constexpr-82218.C
@@ -1,5 +1,6 @@
 // PR c++/82218
 // { dg-do compile { target c++14 } }
+// { dg-options "-fdelete-null-pointer-checks" }
 
 template<typename _Tp>
 struct identity
diff --git a/gcc/testsuite/g++.dg/expr/pmf-3.C b/gcc/testsuite/g++.dg/expr/pmf-3.C
index fac42fc23a5..b94cd8ea638 100644
--- a/gcc/testsuite/g++.dg/expr/pmf-3.C
+++ b/gcc/testsuite/g++.dg/expr/pmf-3.C
@@ -1,5 +1,6 @@
 // PR c++/80485
 // { dg-do compile { target c++11 } }
+// { dg-options "-fdelete-null-pointer-checks" }
 
 struct dummy {
   void nonnull() {};
diff --git a/gcc/testsuite/g++.dg/ext/attr-returns-nonnull.C b/gcc/testsuite/g++.dg/ext/attr-returns-nonnull.C
index f75f32e46e8..46d1fa0e7fb 100644
--- a/gcc/testsuite/g++.dg/ext/attr-returns-nonnull.C
+++ b/gcc/testsuite/g++.dg/ext/attr-returns-nonnull.C
@@ -4,7 +4,7 @@
 // does not "inherit" attribute nonnull from an argument declared with
 // one in the primary template.
 // { dg-do compile }
-// { dg-options "-O -Wall -fdump-tree-optimized" }
+// { dg-options "-O -Wall -fdump-tree-optimized -fdelete-null-pointer-checks" }
 
 template <class T>
 void* __attribute__ ((returns_nonnull))
diff --git a/gcc/testsuite/g++.dg/tree-ssa/lifetime-dse1.C b/gcc/testsuite/g++.dg/tree-ssa/lifetime-dse1.C
index 90c90f2650c..0b7451d42b3 100644
--- a/gcc/testsuite/g++.dg/tree-ssa/lifetime-dse1.C
+++ b/gcc/testsuite/g++.dg/tree-ssa/lifetime-dse1.C
@@ -1,5 +1,5 @@
 // PR c++/61982
-// { dg-additional-options "-O2 -fdump-tree-optimized" }
+// { dg-additional-options "-O2 -fdump-tree-optimized -fdelete-null-pointer-checks" }
 // { dg-final { scan-tree-dump-not "= 0" "optimized" } }
 
 struct X { 
diff --git a/gcc/testsuite/g++.dg/tree-ssa/pr61034.C b/gcc/testsuite/g++.dg/tree-ssa/pr61034.C
index 023655b20fb..870b2372166 100644
--- a/gcc/testsuite/g++.dg/tree-ssa/pr61034.C
+++ b/gcc/testsuite/g++.dg/tree-ssa/pr61034.C
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O2 -fdump-tree-fre3 -fdump-tree-optimized" }
+// { dg-options "-O2 -fdump-tree-fre3 -fdump-tree-optimized -fdelete-null-pointer-checks" }
 
 #define assume(x) if(!(x))__builtin_unreachable()
 
diff --git a/gcc/testsuite/gcc.dg/addr_equal-1.c b/gcc/testsuite/gcc.dg/addr_equal-1.c
index dd237a7d3cd..70fa35464c1 100644
--- a/gcc/testsuite/gcc.dg/addr_equal-1.c
+++ b/gcc/testsuite/gcc.dg/addr_equal-1.c
@@ -2,7 +2,7 @@
 /* { dg-require-effective-target nonpic } */
 /* { dg-require-weak "" } */
 /* { dg-require-alias "" } */
-/* { dg-options "-O2" } */
+/* { dg-options "-O2 -fdelete-null-pointer-checks" } */
 /* { dg-skip-if "" { powerpc-ibm-aix* } } */
 void abort (void);
 extern int undef_var0, undef_var1;
diff --git a/gcc/testsuite/gcc.dg/ipa/pr85734.c b/gcc/testsuite/gcc.dg/ipa/pr85734.c
index e5fa21f0548..cbd524b1e8d 100644
--- a/gcc/testsuite/gcc.dg/ipa/pr85734.c
+++ b/gcc/testsuite/gcc.dg/ipa/pr85734.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -Wsuggest-attribute=malloc" } */
+/* { dg-options "-O2 -Wsuggest-attribute=malloc -fdelete-null-pointer-checks" } */
 
 __attribute__((noinline))
 static void *f1(__SIZE_TYPE__ sz) /* { dg-bogus "function might be candidate for attribute 'malloc'" } */
diff --git a/gcc/testsuite/gcc.dg/ipa/propmalloc-1.c b/gcc/testsuite/gcc.dg/ipa/propmalloc-1.c
index 9a95f817079..48136275590 100644
--- a/gcc/testsuite/gcc.dg/ipa/propmalloc-1.c
+++ b/gcc/testsuite/gcc.dg/ipa/propmalloc-1.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fdump-ipa-pure-const-details" } */
+/* { dg-options "-O2 -fdump-ipa-pure-const-details -fdelete-null-pointer-checks" } */
 
 __attribute__((noinline, no_icf, used))
 static void *f(__SIZE_TYPE__ n)
diff --git a/gcc/testsuite/gcc.dg/ipa/propmalloc-2.c b/gcc/testsuite/gcc.dg/ipa/propmalloc-2.c
index 95b2fd74a7a..4ad8fb1e751 100644
--- a/gcc/testsuite/gcc.dg/ipa/propmalloc-2.c
+++ b/gcc/testsuite/gcc.dg/ipa/propmalloc-2.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fdump-ipa-pure-const-details" } */
+/* { dg-options "-O2 -fdump-ipa-pure-const-details -fdelete-null-pointer-checks" } */
 
 __attribute__((noinline, used, no_icf))
 static void *foo (__SIZE_TYPE__ n)
diff --git a/gcc/testsuite/gcc.dg/ipa/propmalloc-3.c b/gcc/testsuite/gcc.dg/ipa/propmalloc-3.c
index 13558ddd07d..c32254489a5 100644
--- a/gcc/testsuite/gcc.dg/ipa/propmalloc-3.c
+++ b/gcc/testsuite/gcc.dg/ipa/propmalloc-3.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fdump-ipa-pure-const-details" } */
+/* { dg-options "-O2 -fdump-ipa-pure-const-details -fdelete-null-pointer-checks" } */
 
 static void *foo(__SIZE_TYPE__, int) __attribute__((noinline, no_icf, used));
 
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr78154.c b/gcc/testsuite/gcc.dg/tree-ssa/pr78154.c
index d908a39dcd6..b561503a000 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/pr78154.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr78154.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fdump-tree-evrp-slim" } */
+/* { dg-options "-O2 -fdump-tree-evrp-slim -fdelete-null-pointer-checks" } */
 
 void f(void *d, const void *s, __SIZE_TYPE__ n)
 {
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr83648.c b/gcc/testsuite/gcc.dg/tree-ssa/pr83648.c
index 884faf81167..954eb2f0f4f 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/pr83648.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr83648.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fdump-tree-local-pure-const-details" } */
+/* { dg-options "-O2 -fdump-tree-local-pure-const-details -fdelete-null-pointer-checks" } */
 
 void *g(unsigned n)
 {
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 98288521abd..d14bbaa9d38 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2018-08-30  Sandra Loosemore  <sandra@codesourcery.com>
+
+	* testsuite/experimental/propagate_const/observers/1.cc: Make
+	dependence on -fdelete-null-pointer-checks explicit.
+
 2018-08-30  Jonathan Wakely  <jwakely@redhat.com>
 
 	* include/bits/hashtable_policy.h (__clp2): Fix calculation for LLP64
diff --git a/libstdc++-v3/testsuite/experimental/propagate_const/observers/1.cc b/libstdc++-v3/testsuite/experimental/propagate_const/observers/1.cc
index 24aa1a10c47..512c64d0b06 100644
--- a/libstdc++-v3/testsuite/experimental/propagate_const/observers/1.cc
+++ b/libstdc++-v3/testsuite/experimental/propagate_const/observers/1.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++14 } }
+// { dg-options "-fdelete-null-pointer-checks" }
 
 // Copyright (C) 2015-2018 Free Software Foundation, Inc.
 //