arg4.c

来自「linux下编程用 编译软件」· C语言 代码 · 共 31 行

// { dg-do compile }

// Copyright (C) 2004 Free Software Foundation, Inc.
// Contributed by Nathan Sidwell 30 Nov 2004 <[e-mail]>

// PR 17431. copy ctor from user conv
// Origin: Volker Reichelt <[e-mail]>

struct A {};

struct B : A
{
  B(int);  // { dg-error "" "" }
  B(B&);   // { dg-error "" "" }
  B(A);    // { dg-error "" "" }
};

struct C
{
  operator B () const;  
};


void foo(B);

void bar()
{
  C c;
  foo(c); // { dg-error "no matching function|initializing" "" }
}