libstdc++-v3/testsuite/20_util/function_objects/83607.cc

   1 // Copyright (C) 2018-2020 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++17" }
  19 // { dg-do compile { target c++17 } }
  20
  21 #include <functional>
  22 #include <cstddef>
  23
  24 // PR libstdc++/83607
  25
  26 using std::boyer_moore_searcher;
  27 using std::boyer_moore_horspool_searcher;
  28 using std::byte;
  29 using std::hash;
  30 using std::equal_to;
  31
  32 void
  33 test01()
  34 {
  35   constexpr auto expected = sizeof(boyer_moore_searcher<const char*>);
  36   static_assert(sizeof(boyer_moore_searcher<const long*>) != expected);
  37   using T1 = boyer_moore_searcher<char*, hash<char>, equal_to<char>>;
  38   static_assert(sizeof(T1) == expected);
  39   using T2 = boyer_moore_searcher<byte*>;
  40   static_assert(sizeof(T2) == expected);
  41   using T3 = boyer_moore_searcher<const byte*>;
  42   static_assert(sizeof(T3) == expected);
  43   using T4 = boyer_moore_searcher<const byte*, hash<byte>, equal_to<byte>>;
  44   static_assert(sizeof(T4) == expected);
  45 }
  46
  47 void
  48 test02()
  49 {
  50   constexpr auto expected = sizeof(boyer_moore_horspool_searcher<const char*>);
  51   static_assert(sizeof(boyer_moore_horspool_searcher<const long*>) != expected);
  52   using T1 = boyer_moore_horspool_searcher<char*, hash<char>, equal_to<char>>;
  53   static_assert(sizeof(T1) == expected);
  54   using T2 = boyer_moore_horspool_searcher<byte*>;
  55   static_assert(sizeof(T2) == expected);
  56   using T3 = boyer_moore_horspool_searcher<const byte*>;
  57   static_assert(sizeof(T3) == expected);
  58   using T4
  59     = boyer_moore_horspool_searcher<const byte*, hash<byte>, equal_to<byte>>;
  60   static_assert(sizeof(T4) == expected);
  61 }