libstdc++-v3/testsuite/20_util/uses_allocator/69293_neg.cc

   1 // Copyright (C) 2016 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++11" }
  19 // { dg-do compile }
  20
  21 // PR libstdc++/69293
  22
  23 #include <tuple>
  24 #include <memory>
  25
  26 using std::allocator;
  27 using std::allocator_arg_t;
  28 using std::uses_allocator;
  29 using std::tuple;
  30 using std::is_constructible;
  31
  32 struct X
  33 {
  34   using allocator_type = allocator<int>;
  35 };
  36
  37 using alloc_type = X::allocator_type;
  38
  39 static_assert(uses_allocator<X, alloc_type>{}, "");
  40 static_assert(!is_constructible<X, allocator_arg_t, alloc_type>{}, "");
  41 static_assert(!is_constructible<X, alloc_type>{}, "");
  42
  43 void
  44 test01()
  45 {
  46   alloc_type a;
  47   std::tuple<X> t(std::allocator_arg, a); // this is required to be ill-formed
  48   // { dg-error "static assertion failed" "" { target *-*-* } 89 }
  49 }