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The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/bits/error.h


$ cat -n /usr/include/x86_64-linux-gnu/bits/error.h

     1	/* Specializations for error functions.
     2	   Copyright (C) 2007-2024 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, see
    17	   <https://www.gnu.org/licenses/>.  */
    18	
    19	#ifndef	_ERROR_H
    20	# error "Never include <bits/error.h> directly; use <error.h> instead."
    21	#endif
    22	
    23	
    24	extern void __REDIRECT (__error_alias, (int __status, int __errnum,
    25						const char *__format, ...),
    26				error)
    27	  __attribute__ ((__format__ (__printf__, 3, 4)));
    28	extern void __REDIRECT (__error_noreturn, (int __status, int __errnum,
    29						   const char *__format, ...),
    30				error)
    31	  __attribute__ ((__noreturn__, __format__ (__printf__, 3, 4)));
    32	
    33	
    34	/* If we know the function will never return make sure the compiler
    35	   realizes that, too.  */
    36	__extern_always_inline void
    37	error (int __status, int __errnum, const char *__format, ...)
    38	{
    39	  if (__builtin_constant_p (__status) && __status != 0)
    40	    __error_noreturn (__status, __errnum, __format, __va_arg_pack ());
    41	  else
    42	    __error_alias (__status, __errnum, __format, __va_arg_pack ());
    43	}
    44	
    45	
    46	extern void __REDIRECT (__error_at_line_alias, (int __status, int __errnum,
    47							const char *__fname,
    48							unsigned int __line,
    49							const char *__format, ...),
    50				error_at_line)
    51	  __attribute__ ((__format__ (__printf__, 5, 6)));
    52	extern void __REDIRECT (__error_at_line_noreturn, (int __status, int __errnum,
    53							   const char *__fname,
    54							   unsigned int __line,
    55							   const char *__format,
    56							   ...),
    57				error_at_line)
    58	  __attribute__ ((__noreturn__, __format__ (__printf__, 5, 6)));
    59	
    60	
    61	/* If we know the function will never return make sure the compiler
    62	   realizes that, too.  */
    63	__extern_always_inline void
    64	error_at_line (int __status, int __errnum, const char *__fname,
    65		       unsigned int __line, const char *__format, ...)
    66	{
    67	  if (__builtin_constant_p (__status) && __status != 0)
    68	    __error_at_line_noreturn (__status, __errnum, __fname, __line, __format,
    69				      __va_arg_pack ());
    70	  else
    71	    __error_at_line_alias (__status, __errnum, __fname, __line,
    72				   __format, __va_arg_pack ());
    73	}