--- a/src/hotspot/share/opto/ifnode.cpp	Mon Oct 23 14:57:05 2017 +0000
+++ b/src/hotspot/share/opto/ifnode.cpp	Wed Oct 18 16:06:39 2017 +0200
@@ -477,6 +477,9 @@
 // if this IfNode follows a range check pattern return the projection
 // for the failed path
 ProjNode* IfNode::range_check_trap_proj(int& flip_test, Node*& l, Node*& r) {
+  if (outcnt() != 2) {
+    return NULL;
+  }
   Node* b = in(1);
   if (b == NULL || !b->is_Bool())  return NULL;
   BoolNode* bn = b->as_Bool();