--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp17.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,31 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-vrp1" } */
+
+extern void abort (void) __attribute__ ((__noreturn__));
+union tree_node;
+typedef union tree_node *tree;
+extern const unsigned char tree_code_length[];
+struct tree_common
+{
+  int code;
+};
+struct tree_exp
+{
+  tree operands[1];
+};
+union tree_node
+{
+  struct tree_common common;
+  struct tree_exp exp;
+};
+int
+gimplify_for_stmt (tree stmt)
+{
+  if (2 >= tree_code_length[stmt->common.code])
+    abort ();
+  if (3 >= tree_code_length[stmt->common.code])
+    abort ();
+}
+
+/* { dg-final { scan-tree-dump-times "Simplified relational" 1 "vrp1" } } */
+