| /* Tests for interactions between C++ and assert. |
| Copyright (C) 2017-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <assert.h> |
| |
| /* The C++ standard requires that if the assert argument is a constant |
| subexpression, then the assert itself is one, too. */ |
| constexpr int |
| check_constexpr () |
| { |
| return (assert (true), 1); |
| } |
| |
| /* Objects of this class can be contextually converted to bool, but |
| cannot be compared to int. */ |
| struct no_int |
| { |
| no_int () = default; |
| no_int (const no_int &) = delete; |
| |
| explicit operator bool () const |
| { |
| return true; |
| } |
| |
| bool operator! () const; /* No definition. */ |
| template <class T> bool operator== (T) const; /* No definition. */ |
| template <class T> bool operator!= (T) const; /* No definition. */ |
| }; |
| |
| /* This class tests that operator== is not used by assert. */ |
| struct bool_and_int |
| { |
| bool_and_int () = default; |
| bool_and_int (const no_int &) = delete; |
| |
| explicit operator bool () const |
| { |
| return true; |
| } |
| |
| bool operator! () const; /* No definition. */ |
| template <class T> bool operator== (T) const; /* No definition. */ |
| template <class T> bool operator!= (T) const; /* No definition. */ |
| }; |
| |
| static int |
| do_test () |
| { |
| { |
| no_int value; |
| assert (value); |
| } |
| |
| { |
| bool_and_int value; |
| assert (value); |
| } |
| |
| return 0; |
| } |
| |
| #include <support/test-driver.c> |