/usr/include/kvutils/kvu_dbc.h is in libkvutils-dev 2.8.1-5build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* dbc.h: A barebones design-by-contract framework for C and C++
* Copyright (C) 2001,2002,2009 Kai Vehmanen
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**************************************************************************/
#ifndef INCLUDED_DBC_H
#define INCLUDED_DBC_H
#ifdef ENABLE_DBC
#include <stdio.h>
void kvu_dbc_report_failure(const char *action, const char* expr, const char* file, const char* func, int lineno);
/**
* Declare a boolean precondition assertion. A warning is emitted
* if expr is false.
*/
#define DBC_REQUIRE(expr) \
(expr) ? (void)(0) : kvu_dbc_report_failure("DBC_REQUIRE", #expr, __FILE__, __KVU_FUNCTION, __LINE__)
/**
* Declare a boolean postcondition assertion. A warning is emitted
* if expr is false.
*/
#define DBC_ENSURE(expr) \
(expr) ? (void)(0) : kvu_dbc_report_failure("DBC_ENSURE", #expr, __FILE__, __KVU_FUNCTION, __LINE__)
/**
* Declare a boolean invariant assertion. A warning is emitted
* if expr is false.
*/
#define DBC_CHECK(expr) \
(expr) ? (void)(0) : kvu_dbc_report_failure("DBC_CHECK", #expr, __FILE__, __KVU_FUNCTION, __LINE__)
/**
* Emits warning if macro is ever executed.
*/
#define DBC_NEVER_REACHED(expr) \
kvu_dbc_report_failure("DBC_NEVER_REACHED", NULL, __FILE__, __KVU_FUNCTION, __LINE__)
/**
* A helper macro for declaring variables, etc that will be
* only defined when ENABLE_DBC is enabled.
*/
#define DBC_DECLARE(expr) expr
#else /* DBC DISABLED --> */
/* When ENABLE_DBC is not defined, the macros expand to no-op
statements */
#define DBC_REQUIRE(expr) ((void) 0)
#define DBC_ENSURE(expr) ((void) 0)
#define DBC_CHECK(expr) ((void) 0)
#define DBC_NEVER_REACHED(x) ((void) 0)
#define DBC_DECLARE(expr) ((void) 0)
#endif /* <-- DBC DISABLED */
/* Adapted from glibc 2.9 assert.h (LGPL 2.1)
Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
which contains the name of the function currently being defined.
This is broken in G++ before version 2.6.
C9x has a similar variable called __func__, but prefer the GCC one since
it demangles C++ function names. */
#undef __KVU_FUNCTION
#if defined HAVE_FEATURES_H
# include <features.h>
#endif
#if defined __GNUC_PREREQ
/* 1. gcc pretty-printer */
# if __GNUC_PREREQ(2, 6)
# define __KVU_FUNCTION __PRETTY_FUNCTION__
# endif
#elif defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
/* 2. check for C99 (not defined at all in C90, nor in C++1998) */
# define __KVU_FUNCTION __func__
#elif defined __GNUC__ && __GNUC__ >= 2
/* 3. as per http://gcc.gnu.org/onlinedocs/gcc/Function-Names.html */
# define __KVU_FUNCTION __FUNCTION__
#else
/* 4. not supported */
# define __KVU_FUNCTION "__func__"
#endif
#endif /* INCLUDED_DBC_H */
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