sortix-mirror/libc/include/assert.h
Jonas 'Sortie' Termansen 611dc22e73 Standardize header include guards.
This change makes all the standard library and kernel headers use header
guards with a consistent scheme within the reserved namespace to avoid
conflicts with non-standard-library-implementation code.
2022-07-09 20:51:13 +02:00

67 lines
1.9 KiB
C

/*
* Copyright (c) 2012, 2013 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* assert.h
* Verify program assertion.
*/
#ifndef _INCLUDE_ASSERT_H
#define _INCLUDE_ASSERT_H
#include <sys/cdefs.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Determine how the value should be cast to void. */
#if defined __cplusplus
#define __ASSERT_VOID_CAST(x) static_cast<void>(x)
#else
#define __ASSERT_VOID_CAST(x) (void) x
#endif
/* The C11 static_assert macro expands to the _Static_assert keyword. */
#if defined(__STDC_VERSION__) && 201112L <= __STDC_VERSION__
#define static_assert _Static_assert
#endif
/* The actual implementation of assert. */
__attribute__((noreturn))
void __assert(const char*, unsigned long, const char*, const char*);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif
/* Rid ourselves of any previous declaration of assert. */
#ifdef assert
#undef assert
#endif
/* If not debugging, we'll declare a no-operation assert macro. */
#if defined(NDEBUG)
#define assert(ignore) (__ASSERT_VOID_CAST(0))
#endif
/* Otherwise, declare the normal assert macro. */
#if !defined(NDEBUG)
#define assert(invariant) \
((invariant) \
? __ASSERT_VOID_CAST(0) \
: __assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, #invariant))
#endif