diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 4bd9f88af49..7bc4374dbd7 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2016-05-02  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR testsuite/70520
+	* c-c++-common/asan/clone-test-1.c (main): Align child process
+	stack to 16 bytes.
+
 2016-05-02  David Malcolm  <dmalcolm@redhat.com>
 
 	PR c++/62314
diff --git a/gcc/testsuite/c-c++-common/asan/clone-test-1.c b/gcc/testsuite/c-c++-common/asan/clone-test-1.c
index fd187aaadd2..eeca09f3e68 100644
--- a/gcc/testsuite/c-c++-common/asan/clone-test-1.c
+++ b/gcc/testsuite/c-c++-common/asan/clone-test-1.c
@@ -25,7 +25,7 @@ volatile int zero = 0;
 int main(int argc, char **argv) {
   int i;
   const int kStackSize = 1 << 20;
-  char child_stack[kStackSize + 1];
+  char __attribute__((aligned(16))) child_stack[kStackSize + 1];
   char *sp = child_stack + kStackSize;  /* Stack grows down. */
   printf("Parent: %p\n", sp);
   pid_t clone_pid = clone(Child, sp, CLONE_FILES | CLONE_VM, NULL, 0, 0, 0);