diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 1798f92705..fc9dcac563 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,12 @@
+2020-07-13  Gary Benson <gbenson@redhat.com>
+
+	* gdb.base/bigcore.c (main): Use a volatile pointer when
+	attempting to trigger a SIGSEGV.
+	* gdb.base/gcore-relro-pie.c (break_here): Likewise.
+	* gdb.base/gcore-tls-pie.c (break_here): Likewise.
+	* gdb.base/savedregs.c (thrower): Likewise.
+	* gdb.mi/mi-syn-frame.c (bar): Likewise.
+
 2020-07-13  Gary Benson <gbenson@redhat.com>
 
 	* gdb.base/vla-datatypes.c (vla_factory): Factor out sections
diff --git a/gdb/testsuite/gdb.base/bigcore.c b/gdb/testsuite/gdb.base/bigcore.c
index 174e0f67f0..8be1b154b3 100644
--- a/gdb/testsuite/gdb.base/bigcore.c
+++ b/gdb/testsuite/gdb.base/bigcore.c
@@ -267,5 +267,5 @@ main ()
   /* Push everything out to disk.  */
 
   print_string ("Dump core ....\n");
-  *(char*)0 = 0;
+  *(volatile char*)0 = 0;
 }
diff --git a/gdb/testsuite/gdb.base/gcore-relro-pie.c b/gdb/testsuite/gdb.base/gcore-relro-pie.c
index 20cf12c563..9ae7cb2cb9 100644
--- a/gdb/testsuite/gdb.base/gcore-relro-pie.c
+++ b/gdb/testsuite/gdb.base/gcore-relro-pie.c
@@ -18,7 +18,7 @@
 void
 break_here (void)
 {
-  *(int *) 0 = 0;
+  *(volatile int *) 0 = 0;
 }
 
 void
diff --git a/gdb/testsuite/gdb.base/gcore-tls-pie.c b/gdb/testsuite/gdb.base/gcore-tls-pie.c
index 73aec409f1..18169fcd62 100644
--- a/gdb/testsuite/gdb.base/gcore-tls-pie.c
+++ b/gdb/testsuite/gdb.base/gcore-tls-pie.c
@@ -25,7 +25,7 @@ __thread char i;
 void
 break_here (void)
 {
-  *(int *) 0 = 0;
+  *(volatile int *) 0 = 0;
 }
 
 void
diff --git a/gdb/testsuite/gdb.base/savedregs.c b/gdb/testsuite/gdb.base/savedregs.c
index d3bcbf7826..05fba50615 100644
--- a/gdb/testsuite/gdb.base/savedregs.c
+++ b/gdb/testsuite/gdb.base/savedregs.c
@@ -46,7 +46,7 @@ static void
 thrower (void)
 {
   /* Trigger a SIGSEGV.  */
-  *(char *)0 = 0;
+  *(volatile char *)0 = 0;
 
   /* On MMU-less system, previous memory access to address zero doesn't
      trigger a SIGSEGV.  Trigger a SIGILL.  Each arch should define its
diff --git a/gdb/testsuite/gdb.mi/mi-syn-frame.c b/gdb/testsuite/gdb.mi/mi-syn-frame.c
index c260112b3f..b6ab6e8d88 100644
--- a/gdb/testsuite/gdb.mi/mi-syn-frame.c
+++ b/gdb/testsuite/gdb.mi/mi-syn-frame.c
@@ -27,7 +27,7 @@ foo (void)
 void 
 bar (void)
 {
-  *(char *)0 = 0;    /* try to cause a segfault */
+  *(volatile char *)0 = 0;    /* try to cause a segfault */
 
   /* On MMU-less system, previous memory access to address zero doesn't
      trigger a SIGSEGV.  Trigger a SIGILL.  Each arch should define its