diff --git a/gcc/graphite-clast-to-gimple.c b/gcc/graphite-clast-to-gimple.c
index 4894b52..183dde7 100644
--- a/gcc/graphite-clast-to-gimple.c
+++ b/gcc/graphite-clast-to-gimple.c
@@ -985,7 +985,7 @@ graphite_create_new_loop_guard (sese region, edge entry_edge,
 			     : PLUS_EXPR, type, ub, one);
 
   /* When ub + 1 wraps around, use lb <= ub.  */
-  if (integer_zerop (ub_one))
+  if (TREE_OVERFLOW_P (ub_one))
     cond_expr = fold_build2 (LE_EXPR, boolean_type_node, lb, ub);
   else
     cond_expr = fold_build2 (LT_EXPR, boolean_type_node, lb, ub_one);
diff --git a/gcc/testsuite/gcc.dg/graphite/pr46761.c b/gcc/testsuite/gcc.dg/graphite/pr46761.c
new file mode 100644
index 0000000..f45398a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/graphite/pr46761.c
@@ -0,0 +1,22 @@
+/* { dg-do run } */
+/* { dg-options "-O -fgraphite-identity" } */
+
+#define N 128
+
+int
+main ()
+{
+  int arr[N], i, s = 0;
+  for (i = 0; i < N; i++)
+    arr[i] = i;
+
+  for (i = 0; i < N; i++)
+    if (arr[i] != i)
+      __builtin_abort ();
+
+  for (i = 0; i < N; i++)
+    s += arr[i];
+  if (s != (N * (N - 1)) / 2)
+    __builtin_abort ();
+  return 0;
+}