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/* Test assert as a variadic macro for C++ code snippets.
Copyright The GNU Toolchain Authors.
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
<https://www.gnu.org/licenses/>. */
/* This test requires C++26, and is compiled with -std=c++26
if GCC version supports that, and no additional options
otherwise. */
#if defined __cplusplus && __cplusplus > 202302L
#undef NDEBUG
#include <assert.h>
template <typename T1, typename T2>
bool
foo ()
{ return true; }
struct C
{
C (int p, int r) : x (p + r) {}
int x;
};
int
func ()
{
return 1;
}
static void
test_enabled ()
{
{
assert (foo <int, float> ());
}
{
assert (C {1, 2}.x > 0);
}
{
int x = 10, y = 20;
assert ([x, y] { return x < y; } ());
}
{
/* Ill-formed, not an assigment expression. */
// assert (func (), func ());
assert ((func (), func ()));
}
}
/* GCC PR118629 fixed the handling of assert inside requires clause. */
#if __GNUC_PREREQ (14, 3) || defined __clang__
template <typename Ts>
constexpr bool
assert_works ()
{
return requires (Ts ts) {
assert (ts);
};
}
enum OE { oe };
enum TE : int { te };
enum class SE : int { se };
static_assert ( assert_works <OE> ());
static_assert ( assert_works <TE> ());
static_assert (!assert_works <SE> ());
#endif /* __GNUC_PREREQ (14, 3) || defined __clang__ */
#define NDEBUG
#include <assert.h>
static void
test_disabled ()
{
/* Assert is variadic, but ignores arguments */
assert(1, 2);
assert(+, 1, -, 2, *, 30);
}
static int
do_test ()
{
test_enabled ();
test_disabled ();
return 0;
}
#else
#include <support/test-driver.h>
static int
do_test ()
{
return EXIT_UNSUPPORTED;
}
#endif
#include <support/test-driver.c>
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