82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
/* Tests for interactions between C++ and assert.
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Copyright (C) 2017-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* Undefine NDEBUG to ensure the build system e.g. CFLAGS/CXXFLAGS
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does not disable the asserts we want to test. */
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#undef NDEBUG
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#include <assert.h>
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/* The C++ standard requires that if the assert argument is a constant
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subexpression, then the assert itself is one, too. */
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constexpr int
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check_constexpr ()
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{
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return (assert (true), 1);
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}
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/* Objects of this class can be contextually converted to bool, but
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cannot be compared to int. */
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struct no_int
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{
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no_int () = default;
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no_int (const no_int &) = delete;
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explicit operator bool () const
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{
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return true;
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}
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bool operator! () const; /* No definition. */
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template <class T> bool operator== (T) const; /* No definition. */
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template <class T> bool operator!= (T) const; /* No definition. */
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};
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/* This class tests that operator== is not used by assert. */
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struct bool_and_int
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{
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bool_and_int () = default;
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bool_and_int (const no_int &) = delete;
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explicit operator bool () const
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{
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return true;
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}
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bool operator! () const; /* No definition. */
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template <class T> bool operator== (T) const; /* No definition. */
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template <class T> bool operator!= (T) const; /* No definition. */
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};
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static int
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do_test ()
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{
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{
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no_int value;
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assert (value);
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}
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{
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bool_and_int value;
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assert (value);
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}
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return 0;
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}
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#include <support/test-driver.c>
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