--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr60598.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,26 @@
+/* PR target/60598 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+/* { dg-additional-options "-fpic" { target fpic } } */
+/* { dg-additional-options "-march=z196 -mtune=zEC12" { target s390*-*-* } } */
+
+struct S { unsigned a, b[32]; };
+
+void
+foo (struct S *x, struct S *y)
+{
+  unsigned a = y->a, i;
+  if (x == y)
+    for (i = 0; i < a - 1 - i; i++)
+      {
+	unsigned t = x->b[i];
+	x->b[i] = x->b[a - 1 - i];
+	x->b[a - 1 - i] = t;
+      }
+  else
+    {
+      x->a = a;
+      for (i = 0; i < a; i++)
+	x->b[i] = y->b[a - 1 - i];
+    }
+}