src/share/vm/opto/machnode.cpp

rev 7259 : 8062258: compiler/debug/TraceIterativeGVN.java segfaults in trace_PhaseIterGVN
Reviewed-by: ?

*** 559,569 ****
  }
  
  const TypePtr *MachProjNode::adr_type() const {
    if (bottom_type() == Type::MEMORY) {
      // in(0) might be a narrow MemBar; otherwise we will report TypePtr::BOTTOM
!     const TypePtr* adr_type = in(0)->adr_type();
      #ifdef ASSERT
      if (!is_error_reported() && !Node::in_dump())
        assert(adr_type != NULL, "source must have adr_type");
      #endif
      return adr_type;
--- 559,571 ----
  }
  
  const TypePtr *MachProjNode::adr_type() const {
    if (bottom_type() == Type::MEMORY) {
      // in(0) might be a narrow MemBar; otherwise we will report TypePtr::BOTTOM
!     Node* ctrl = in(0);
!     if (ctrl == NULL)  return NULL; // node is dead
!     const TypePtr* adr_type = ctrl->adr_type();
      #ifdef ASSERT
      if (!is_error_reported() && !Node::in_dump())
        assert(adr_type != NULL, "source must have adr_type");
      #endif
      return adr_type;