-/* $Id$ */
-
/* 7.2 Diagnostics <assert.h>
This file is part of the Public Domain C Library (PDCLib).
Permission is granted to use, modify, and / or redistribute at will.
*/
-#ifndef _PDCLIB_ASSERT_H
-#define _PDCLIB_ASSERT_H _PDCLIB_ASSERT_H
#include <_PDCLIB_aux.h>
#include <_PDCLIB_config.h>
+
+/*
+ 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.
+*/
+
_PDCLIB_BEGIN_EXTERN_C
+#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
", file " __FILE__ \
", line " _PDCLIB_symbol2string( __LINE__ ) \
"." _PDCLIB_endl ); \
+ _PDCLIB_UNREACHABLE; \
} \
} while(0)
+
#else
#define assert(expression) \
do { if(!(expression)) { \
", file " __FILE__ \
", line " _PDCLIB_symbol2string( __LINE__ ) \
"." _PDCLIB_endl ); \
+ _PDCLIB_UNREACHABLE; \
} \
} while(0)
#endif
_PDCLIB_END_EXTERN_C
-#endif
-