1// Bob Walters 10-2008 2 3// Test for Container using non-standard pointer types. 4 5// Copyright (C) 2008, 2009 6// Free Software Foundation, Inc. 7// 8// This file is part of the GNU ISO C++ Library. This library is free 9// software; you can redistribute it and/or modify it under the 10// terms of the GNU General Public License as published by the 11// Free Software Foundation; either version 3, or (at your option) 12// any later version. 13 14// This library is distributed in the hope that it will be useful, 15// but WITHOUT ANY WARRANTY; without even the implied warranty of 16// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17// GNU General Public License for more details. 18 19// You should have received a copy of the GNU General Public License along 20// with this library; see the file COPYING3. If not see 21// <http://www.gnu.org/licenses/>. 22 23 24// { dg-do compile } 25 26#include <algorithm> 27#include <testsuite_hooks.h> 28#include <ext/pointer.h> 29 30using __gnu_cxx::_Pointer_adapter; 31using __gnu_cxx::_Relative_pointer_impl; 32using __gnu_cxx::__static_pointer_cast; 33using __gnu_cxx::__const_pointer_cast; 34 35 36struct A { 37 int i; 38}; 39struct B : public A{ 40 int j; 41}; 42typedef _Pointer_adapter<_Relative_pointer_impl<B> > B_pointer; 43typedef _Pointer_adapter<_Relative_pointer_impl<const B> > const_B_pointer; 44typedef _Pointer_adapter<_Relative_pointer_impl<A> > A_pointer; 45typedef _Pointer_adapter<_Relative_pointer_impl<const A> > const_A_pointer; 46 47 48void test01(void) { 49 bool test __attribute__((unused)) = true; 50 51 A a; 52 B b; 53 54 A_pointer aptr( &a ); 55 56 // Can't implicitly cast from A* to B* 57 B_pointer bptr1(aptr); // { dg-error "instantiated from here" 31 } 58 B_pointer bptr2(&a); // { dg-error "instantiated from here" 32 } 59 60 // but explicit cast/conversion is OK. 61 B_pointer bptr3(__static_pointer_cast<B_pointer>(aptr)); // ok 62 B_pointer bptr4(__static_pointer_cast<B_pointer>(&a)); // ok 63 64 // Can't implicitly cast from A* to B* 65 bptr1 = aptr; // { dg-error "instantiated from here" 39 } 66 bptr1 = &a; // { dg-error "instantiated from here" 40 } 67 68 // but explicit cast/conversion is OK. 69 bptr1 = __static_pointer_cast<B_pointer>(aptr); // ok 70 bptr1 = __static_pointer_cast<B_pointer>(&a); // ok 71 72 // Similarly, can't shed constness via implicit cast 73 const_A_pointer captr(&a); 74 A_pointer aptr2(captr); // { dg-error "instantiated from here" 48 } 75 76 // but explicit cast/conversion is OK. 77 A_pointer aptr3(__const_pointer_cast<A_pointer>(captr)); // ok 78 79 // Similarly, can't shed constness via implicit cast 80 aptr2 = captr; // { dg-error "instantiated from here" 54 } 81 82 // but explicit cast/conversion is OK. 83 aptr3 = __const_pointer_cast<A_pointer>(captr); // ok 84 85 // Combine explicit const cast with implicit downcast. 86 const_B_pointer cbptr(&b); 87 A_pointer aptr4(cbptr); // { dg-error "instantiated from here" 61 } 88 aptr4 = cbptr; // { dg-error "instantiated from here" 62 } 89 90 A_pointer aptr5(__const_pointer_cast<B_pointer>(cbptr)); // ok 91 aptr5 = __const_pointer_cast<B_pointer>(cbptr); // ok 92} 93 94// { dg-error "invalid conversion " "" { target *-*-* } 314 } 95// { dg-error "initializing argument 1 of" "" { target *-*-* } 314 } 96// { dg-error "invalid conversion " "" { target *-*-* } 308 } 97// { dg-error "initializing argument 1 of" "" { target *-*-* } 308 } 98// { dg-error "invalid conversion " "" { target *-*-* } 331 } 99// { dg-error "initializing argument 1 of" "" { target *-*-* } 331 } 100// { dg-error "invalid conversion " "" { target *-*-* } 339 } 101// { dg-error "initializing argument 1 of" "" { target *-*-* } 339 } 102// { dg-excess-errors "In constructor" } 103 104