libstdc++-v3/testsuite/23_containers/unordered_set/48101_neg.cc

   1 // Copyright (C) 2017-2025 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-do compile { target c++11 } }
  19
  20 #include <unordered_set>
  21
  22 void
  23 test01()
  24 {
  25   using namespace std;
  26   unordered_set<const int, hash<int>> c;            // { dg-error "here" }
  27   unordered_set<int, equal_to<int>, hash<int>> c2;
  28   c2.find(2);                                       // { dg-error "here" }
  29 }
  30
  31 // { dg-error "non-const, non-volatile value_type" "" { target *-*-* } 0 }
  32 // { dg-error "hash function must be invocable" "" { target *-*-* } 0 }
  33 // { dg-error "key equality predicate must be invocable" "" { target *-*-* } 0 }
  34 // { dg-prune-output "use of deleted function" }
  35 // { dg-prune-output "must have the same value_type as its allocator" }
  36 // { dg-prune-output "no match for call" }
  37 // { dg-prune-output "rebind_alloc" }