covariant14.c

来自「linux下编程用 编译软件」· C语言 代码 · 共 21 行

// Copyright (C) 2005 Free Software Foundation, Inc.
// Contributed by Nathan Sidwell 18 Oct 2005 <[e-mail]>

// PR 22604
// Origin: Volker Reichelt <[e-mail]>

struct A;

struct B
{
  virtual A* foo();  // { dg-error "overriding" "" }
};

namespace N
{
  struct A : B
  {
    virtual A* foo(); // { dg-error "invalid covariant" "" }	
  };
}