1: /* Copyright (C) 1991,1992,1994-2001,2003,2004,2007
    2:    Free Software Foundation, Inc.
    3:    This file is part of the GNU C Library.
    4: 
    5:    The GNU C Library is free software; you can redistribute it and/or
    6:    modify it under the terms of the GNU Lesser General Public
    7:    License as published by the Free Software Foundation; either
    8:    version 2.1 of the License, or (at your option) any later version.
    9: 
   10:    The GNU C Library is distributed in the hope that it will be useful,
   11:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   12:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   13:    Lesser General Public License for more details.
   14: 
   15:    You should have received a copy of the GNU Lesser General Public
   16:    License along with the GNU C Library; if not, write to the Free
   17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   18:    02111-1307 USA.  */
   19: 
   20: /*
   21:  *      ISO C99 Standard: 7.2 Diagnostics    <assert.h>
   22:  */
   23: 
   24: #ifdef  _ASSERT_H
   25: 
   26: # undef _ASSERT_H
   27: # undef assert
   28: # undef __ASSERT_VOID_CAST
   29: 
   30: # ifdef __USE_GNU
   31: #  undef assert_perror
   32: # endif
   33: 
   34: #endif /* assert.h      */
   35: 
   36: #define _ASSERT_H       1
   37: #include <features.h>
   38: 
   39: #if defined __cplusplus && __GNUC_PREREQ (2,95)
   40: # define __ASSERT_VOID_CAST static_cast<void>
   41: #else
   42: # define __ASSERT_VOID_CAST (void)
   43: #endif
   44: 
   45: /* void assert (int expression);
   46: 
   47:    If NDEBUG is defined, do nothing.
   48:    If not, and EXPRESSION is zero, print an error message and abort.  */
   49: 
   50: #ifdef  NDEBUG
   51: 
   52: # define assert(expr)           (__ASSERT_VOID_CAST (0))
   53: 
   54: /* void assert_perror (int errnum);
   55: 
   56:    If NDEBUG is defined, do nothing.  If not, and ERRNUM is not zero, print an
   57:    error message with the error text for ERRNUM and abort.
   58:    (This is a GNU extension.) */
   59: 
   60: # ifdef __USE_GNU
   61: #  define assert_perror(errnum) (__ASSERT_VOID_CAST (0))
   62: # endif
   63: 
   64: #else /* Not NDEBUG.  */
   65: 
   66: __BEGIN_DECLS
   67: 
   68: /* This prints an "Assertion failed" message and aborts.  */
   69: extern void __assert_fail (__const char *__assertion, __const char *__file,
   70:                            unsigned int __line, __const char *__function)
   71:      __THROW __attribute__ ((__noreturn__));
   72: 
   73: /* Likewise, but prints the error text for ERRNUM.  */
   74: extern void __assert_perror_fail (int __errnum, __const char *__file,
   75:                                   unsigned int __line,
   76:                                   __const char *__function)
   77:      __THROW __attribute__ ((__noreturn__));
   78: 
   79: 
   80: /* The following is not at all used here but needed for standard
   81:    compliance.  */
   82: extern void __assert (const char *__assertion, const char *__file, int __line)
   83:      __THROW __attribute__ ((__noreturn__));
   84: 
   85: 
   86: __END_DECLS
   87: 
   88: # define assert(expr)                                                   \
   89:   ((expr)                                                               \
   90:    ? __ASSERT_VOID_CAST (0)                                             \
   91:    : __assert_fail (__STRING(expr), __FILE__, __LINE__, __ASSERT_FUNCTION))
   92: 
   93: # ifdef __USE_GNU
   94: #  define assert_perror(errnum)                                         \
   95:   (!(errnum)                                                            \
   96:    ? __ASSERT_VOID_CAST (0)                                             \
   97:    : __assert_perror_fail ((errnum), __FILE__, __LINE__, __ASSERT_FUNCTION))
   98: # endif
   99: 
  100: /* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
  101:    which contains the name of the function currently being defined.
  102:    This is broken in G++ before version 2.6.
  103:    C9x has a similar variable called __func__, but prefer the GCC one since
  104:    it demangles C++ function names.  */
  105: # if defined __cplusplus ? __GNUC_PREREQ (2, 6) : __GNUC_PREREQ (2, 4)
  106: #   define __ASSERT_FUNCTION    __PRETTY_FUNCTION__
  107: # else
  108: #  if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
  109: #   define __ASSERT_FUNCTION    __func__
  110: #  else
  111: #   define __ASSERT_FUNCTION    ((__const char *) 0)
  112: #  endif
  113: # endif
  114: 
  115: #endif /* NDEBUG.  */