modernc.org/cc@v1.0.1/v2/headers/linux_386/usr/include/assert.h (about)

     1  /* Copyright (C) 1991-2018 Free Software Foundation, Inc.
     2     This file is part of the GNU C Library.
     3  
     4     The GNU C Library is free software; you can redistribute it and/or
     5     modify it under the terms of the GNU Lesser General Public
     6     License as published by the Free Software Foundation; either
     7     version 2.1 of the License, or (at your option) any later version.
     8  
     9     The GNU C Library is distributed in the hope that it will be useful,
    10     but WITHOUT ANY WARRANTY; without even the implied warranty of
    11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12     Lesser General Public License for more details.
    13  
    14     You should have received a copy of the GNU Lesser General Public
    15     License along with the GNU C Library; if not, see
    16     <http://www.gnu.org/licenses/>.  */
    17  
    18  /*
    19   *	ISO C99 Standard: 7.2 Diagnostics	<assert.h>
    20   */
    21  
    22  #ifdef	_ASSERT_H
    23  
    24  # undef	_ASSERT_H
    25  # undef	assert
    26  # undef __ASSERT_VOID_CAST
    27  
    28  # ifdef	__USE_GNU
    29  #  undef assert_perror
    30  # endif
    31  
    32  #endif				/* assert.h      */
    33  
    34  #define	_ASSERT_H	1
    35  #include <features.h>
    36  
    37  #if defined __cplusplus && __GNUC_PREREQ (2,95)
    38  # define __ASSERT_VOID_CAST static_cast<void>
    39  #else
    40  # define __ASSERT_VOID_CAST (void)
    41  #endif
    42  
    43  /* void assert (int expression);
    44  
    45     If NDEBUG is defined, do nothing.
    46     If not, and EXPRESSION is zero, print an error message and abort.  */
    47  
    48  #ifdef	NDEBUG
    49  
    50  # define assert(expr)		(__ASSERT_VOID_CAST (0))
    51  
    52  /* void assert_perror (int errnum);
    53  
    54     If NDEBUG is defined, do nothing.  If not, and ERRNUM is not zero, print an
    55     error message with the error text for ERRNUM and abort.
    56     (This is a GNU extension.) */
    57  
    58  # ifdef	__USE_GNU
    59  #  define assert_perror(errnum)	(__ASSERT_VOID_CAST (0))
    60  # endif
    61  
    62  #else				/* Not NDEBUG.  */
    63  
    64  #ifndef _ASSERT_H_DECLS
    65  #define _ASSERT_H_DECLS
    66  __BEGIN_DECLS
    67  /* This prints an "Assertion failed" message and aborts.  */
    68  extern void __assert_fail(const char *__assertion, const char *__file, unsigned int __line, const char *__function)
    69  __THROW __attribute__ ((__noreturn__));
    70  
    71  /* Likewise, but prints the error text for ERRNUM.  */
    72  extern void __assert_perror_fail(int __errnum, const char *__file, unsigned int __line, const char *__function)
    73  __THROW __attribute__ ((__noreturn__));
    74  
    75  /* The following is not at all used here but needed for standard
    76     compliance.  */
    77  extern void __assert(const char *__assertion, const char *__file, int __line)
    78  __THROW __attribute__ ((__noreturn__));
    79  
    80  __END_DECLS
    81  #endif				/* Not _ASSERT_H_DECLS */
    82  /* When possible, define assert so that it does not add extra
    83     parentheses around EXPR.  Otherwise, those added parentheses would
    84     suppress warnings we'd expect to be detected by gcc's -Wparentheses.  */
    85  # if defined __cplusplus
    86  #  define assert(expr)							\
    87       (static_cast <bool> (expr)						\
    88        ? void (0)							\
    89        : __assert_fail (#expr, __FILE__, __LINE__, __ASSERT_FUNCTION))
    90  # elif !defined __GNUC__ || defined __STRICT_ANSI__
    91  #  define assert(expr)							\
    92      ((expr)								\
    93       ? __ASSERT_VOID_CAST (0)						\
    94       : __assert_fail (#expr, __FILE__, __LINE__, __ASSERT_FUNCTION))
    95  # else
    96  /* The first occurrence of EXPR is not evaluated due to the sizeof,
    97     but will trigger any pedantic warnings masked by the __extension__
    98     for the second occurrence.  The ternary operator is required to
    99     support function pointers and bit fields in this context, and to
   100     suppress the evaluation of variable length arrays.  */
   101  #  define assert(expr)							\
   102    ((void) sizeof ((expr) ? 1 : 0), __extension__ ({			\
   103        if (expr)								\
   104          ; /* empty */							\
   105        else								\
   106          __assert_fail (#expr, __FILE__, __LINE__, __ASSERT_FUNCTION);	\
   107      }))
   108  # endif
   109  # ifdef	__USE_GNU
   110  #  define assert_perror(errnum)						\
   111    (!(errnum)								\
   112     ? __ASSERT_VOID_CAST (0)						\
   113     : __assert_perror_fail ((errnum), __FILE__, __LINE__, __ASSERT_FUNCTION))
   114  # endif
   115  /* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
   116     which contains the name of the function currently being defined.
   117     This is broken in G++ before version 2.6.
   118     C9x has a similar variable called __func__, but prefer the GCC one since
   119     it demangles C++ function names.  */
   120  # if defined __cplusplus ? __GNUC_PREREQ (2, 6) : __GNUC_PREREQ (2, 4)
   121  #   define __ASSERT_FUNCTION	__extension__ __PRETTY_FUNCTION__
   122  # else
   123  #  if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
   124  #   define __ASSERT_FUNCTION	__func__
   125  #  else
   126  #   define __ASSERT_FUNCTION	((const char *) 0)
   127  #  endif
   128  # endif
   129  #endif				/* NDEBUG.  */
   130  #if defined __USE_ISOC11 && !defined __cplusplus
   131  # undef static_assert
   132  # define static_assert _Static_assert
   133  #endif