-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-// Diagnostics
-// ----------------------------------------------------------------------------
+/* 7.2 Diagnostics <assert.h>
-#ifndef __ASSERT_H
-#define __ASSERT_H __ASSERT_H
+ This file is part of the Public Domain C Library (PDCLib).
+ Permission is granted to use, modify, and / or redistribute at will.
+*/
-// ----------------------------------------------------------------------------
-// AUXILIARY
+#include <_PDCLIB_aux.h>
+#include <_PDCLIB_config.h>
-// Helper function doing the print to stderr and call to abort().
-void __assert( char const * const expression, // the tested expression
- char const * const file, // name of source file
- char const * const function, // name of function
- int const line ); // number of source file line
+/*
+ Defines a macro assert() that, depending on the value of the preprocessor
+ symbol NDEBUG, does
+ * evaluate to a void expression if NDEBUG is set OR the parameter expression
+ evaluates to true;
+ * print an error message and terminates the program if NDEBUG is not set AND
+ the parameter expression evaluates to false.
+ The error message contains the parameter expression, name of the source file
+ (__FILE__), line number (__LINE__), and (from C99 onward) name of the function
+ (__func__).
+ The header can be included MULTIPLE times, and redefines the macro depending
+ on the current setting of NDEBUG.
+*/
-// ----------------------------------------------------------------------------
-// DEFINES
+_PDCLIB_BEGIN_EXTERN_C
-// TODO: Check the macro for if-compatibility.
+#ifndef _PDCLIB_ASSERT_H
+#define _PDCLIB_ASSERT_H _PDCLIB_ASSERT_H
+/* Functions _NOT_ tagged noreturn as this hampers debugging */
+void _PDCLIB_assert99( char const * const, char const * const, char const * const );
+void _PDCLIB_assert89( char const * const );
+
+#if _PDCLIB_C_VERSION >= 2011
+#define static_assert _Static_assert
+#else
+#define static_assert( e, m )
+#endif
+
+#endif
+
+/* If NDEBUG is set, assert() is a null operation. */
#undef assert
-#if defined NDEBUG
-#define assert( x ) ( (void) 0 )
+
+#ifdef NDEBUG
+#define assert( ignore ) ( (void) 0 )
+#elif _PDCLIB_C_MIN(99)
+#define assert(expression) \
+ do { if(!(expression)) { \
+ _PDCLIB_assert99("Assertion failed: " _PDCLIB_symbol2string(expression)\
+ ", function ", __func__, \
+ ", file " __FILE__ \
+ ", line " _PDCLIB_symbol2string( __LINE__ ) \
+ "." _PDCLIB_endl ); \
+ _PDCLIB_UNREACHABLE; \
+ } \
+ } while(0)
+
#else
-#define assert( x ) ( x ) ? ( (void) 0 ) \
- : __assert( #x, __FILE__, __func__, __LINE__ )
+#define assert(expression) \
+ do { if(!(expression)) { \
+ _PDCLIB_assert89("Assertion failed: " _PDCLIB_symbol2string(expression)\
+ ", file " __FILE__ \
+ ", line " _PDCLIB_symbol2string( __LINE__ ) \
+ "." _PDCLIB_endl ); \
+ _PDCLIB_UNREACHABLE; \
+ } \
+ } while(0)
#endif
-#endif // __ASSERT_H
+_PDCLIB_END_EXTERN_C