libstdc++-v3/testsuite/20_util/is_function/91371.cc

   1 // Copyright (C) 2019-2024 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 { { i?86-*-* x86_64-*-* } && { ! x32 } } } }
  19 // { dg-require-effective-target c++11 }
  20
  21 #include <type_traits>
  22
  23 using std::is_function;
  24
  25 #ifdef __i386__
  26 static_assert(is_function<void __attribute__((thiscall)) ()>::value, "");
  27 static_assert(is_function<void __attribute__((thiscall)) () const>::value, "");
  28 static_assert(is_function<void __attribute__((fastcall)) ()>::value, "");
  29 static_assert(is_function<void __attribute__((fastcall)) () const>::value, "");
  30 static_assert(is_function<void __attribute__((stdcall)) ()>::value, "");
  31 static_assert(is_function<void __attribute__((stdcall)) () const>::value, "");
  32 #endif
  33 static_assert(is_function<void __attribute__((ms_abi)) ()>::value, "");
  34 static_assert(is_function<void __attribute__((ms_abi)) () const>::value, "");
  35 static_assert(is_function<void __attribute__((ms_abi)) () const &>::value, "");
  36 static_assert(is_function<void __attribute__((ms_abi)) () &&>::value, "");
  37 static_assert(is_function<void __attribute__((sysv_abi)) ()>::value, "");
  38 static_assert(is_function<void __attribute__((sysv_abi)) () const>::value, "");
  39
  40 struct X { operator X*(); };
  41 static_assert(!is_function<X>::value, "");
  42 static_assert(!is_function<X&>::value, "");
  43 static_assert(!is_function<X*>::value, "");
  44 union Y { operator Y*(); int i; long l;};
  45 static_assert(!is_function<Y>::value, "");
  46 static_assert(!is_function<Y&>::value, "");
  47 static_assert(!is_function<Y*>::value, "");