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The C and C++ Include Header Files

cat -n /usr/include/x86_64-linux-gnu/bits/inet-fortified-decl.h

     1	/* Declarations of checking macros for inet functions.
     2	   Copyright (C) 2025-2026 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 _BITS_INET_FORTIFIED_DEC_H
    20	#define _BITS_INET_FORTIFIED_DEC_H 1
    21	
    22	#ifndef _ARPA_INET_H
    23	# error "Never include <bits/inet-fortified-decl.h> directly; use <arpa/inet.h> instead."
    24	#endif
    25	
    26	extern const char *__inet_ntop_chk (int, const void *, char *, socklen_t, size_t);
    27	
    28	extern const char *__REDIRECT_FORTIFY_NTH (__inet_ntop_alias,
    29						   (int, const void *, char *, socklen_t), inet_ntop);
    30	extern const char *__REDIRECT_NTH (__inet_ntop_chk_warn,
    31					   (int, const void *, char *, socklen_t, size_t), __inet_ntop_chk)
    32	     __warnattr ("inet_ntop called with bigger length than "
    33			 "size of destination buffer");
    34	
    35	extern int __inet_pton_chk (int, const char *, void *, size_t);
    36	
    37	extern int __REDIRECT_FORTIFY_NTH (__inet_pton_alias,
    38					   (int, const char *, void *), inet_pton);
    39	extern int __REDIRECT_NTH (__inet_pton_chk_warn,
    40				   (int, const char *, void *, size_t), __inet_pton_chk)
    41	     __warnattr ("inet_pton called with a destination buffer size too small");
    42	#endif /* bits/inet-fortified-decl.h.  */