diff --git a/gcc/testsuite/gcc.dg/torture/pta-ptrarith-1.c b/gcc/testsuite/gcc.dg/torture/pta-ptrarith-1.c
index 99a548840df..85b68068b12 100644
--- a/gcc/testsuite/gcc.dg/torture/pta-ptrarith-1.c
+++ b/gcc/testsuite/gcc.dg/torture/pta-ptrarith-1.c
@@ -6,11 +6,14 @@ struct Foo {
   int *p;
 };
 
+struct Foo *ff;
+
 void __attribute__((noinline))
 foo (void *p)
 {
   struct Foo *f = (struct Foo *)p - 1;
   *f->p = 0;
+  ff = f;
 }
 
 int bar (void)