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/* Copyright (C) 1991,1992,1994-2001,2003,2004 Free Software Foundation, Inc. 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ /* * ISO C99 Standard: 7.2 Diagnostics <assert.h> */ #ifdef _ASSERT_H # undef _ASSERT_H # undef assert # undef __ASSERT_VOID_CAST # ifdef __USE_GNU # undef assert_perror # endif #endif /* assert.h */ #define _ASSERT_H 1 #include <features.h> #if defined __cplusplus && __GNUC_PREREQ (2,95) # define __ASSERT_VOID_CAST static_cast<void> #else # define __ASSERT_VOID_CAST (void) #endif /* void assert (int expression); If NDEBUG is defined, do nothing. If not, and EXPRESSION is zero, print an error message and abort. */ #ifdef NDEBUG # define assert(expr) (__ASSERT_VOID_CAST (0)) /* void assert_perror (int errnum); If NDEBUG is defined, do nothing. If not, and ERRNUM is not zero, print an error message with the error text for ERRNUM and abort. (This is a GNU extension.) */ # ifdef __USE_GNU # define assert_perror(errnum) (__ASSERT_VOID_CAST (0)) # endif #else /* Not NDEBUG. */ __BEGIN_DECLS /* This prints an "Assertion failed" message and aborts. */ extern void __assert_fail (__const char *__assertion, __const char *__file, unsigned int __line, __const char *__function) __THROW __attribute__ ((__noreturn__)); /* Likewise, but prints the error text for ERRNUM. */ extern void __assert_perror_fail (int __errnum, __const char *__file, unsigned int __line, __const char *__function) __THROW __attribute__ ((__noreturn__)); /* The following is not at all used here but needed for standard compliance. */ extern void __assert (const char *__assertion, const char *__file, int __line) __THROW __attribute__ ((__noreturn__)); __END_DECLS # define assert(expr) \ (__ASSERT_VOID_CAST ((expr) ? 0 : \ (__assert_fail (__STRING(expr), __FILE__, __LINE__, \ __ASSERT_FUNCTION), 0))) # ifdef __USE_GNU # define assert_perror(errnum) \ (__ASSERT_VOID_CAST (!(errnum) ? 0 : \ (__assert_perror_fail ((errnum), __FILE__, __LINE__, \ __ASSERT_FUNCTION), 0))) # endif /* 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. */ # if defined __cplusplus ? __GNUC_PREREQ (2, 6) : __GNUC_PREREQ (2, 4) # define __ASSERT_FUNCTION __PRETTY_FUNCTION__ # else # if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L # define __ASSERT_FUNCTION __func__ # else # define __ASSERT_FUNCTION ((__const char *) 0) # endif # endif #endif /* NDEBUG. */