/usr/include/ares_rules.h is in libc-ares-dev 1.12.0-1+deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | #ifndef __CARES_RULES_H
#define __CARES_RULES_H
/* Copyright (C) 2009 by Daniel Stenberg et al
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. M.I.T. makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*/
/* ================================================================ */
/* COMPILE TIME SANITY CHECKS */
/* ================================================================ */
/*
* NOTE 1:
* -------
*
* All checks done in this file are intentionally placed in a public
* header file which is pulled by ares.h when an application is
* being built using an already built c-ares library. Additionally
* this file is also included and used when building the library.
*
* If compilation fails on this file it is certainly sure that the
* problem is elsewhere. It could be a problem in the ares_build.h
* header file, or simply that you are using different compilation
* settings than those used to build the library.
*
* Nothing in this file is intended to be modified or adjusted by the
* c-ares library user nor by the c-ares library builder.
*
* Do not deactivate any check, these are done to make sure that the
* library is properly built and used.
*
* You can find further help on the c-ares development mailing list:
* http://cool.haxx.se/mailman/listinfo/c-ares/
*
* NOTE 2
* ------
*
* Some of the following compile time checks are based on the fact
* that the dimension of a constant array can not be a negative one.
* In this way if the compile time verification fails, the compilation
* will fail issuing an error. The error description wording is compiler
* dependent but it will be quite similar to one of the following:
*
* "negative subscript or subscript is too large"
* "array must have at least one element"
* "-1 is an illegal array size"
* "size of array is negative"
*
* If you are building an application which tries to use an already
* built c-ares library and you are getting this kind of errors on
* this file, it is a clear indication that there is a mismatch between
* how the library was built and how you are trying to use it for your
* application. Your already compiled or binary library provider is the
* only one who can give you the details you need to properly use it.
*/
/*
* Verify that some macros are actually defined.
*/
#ifndef CARES_TYPEOF_ARES_SOCKLEN_T
# error "CARES_TYPEOF_ARES_SOCKLEN_T definition is missing!"
Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_is_missing
#endif
/*
* Macros private to this header file.
*/
#define CareschkszEQ(t, s) sizeof(t) == s ? 1 : -1
#define CareschkszGE(t1, t2) sizeof(t1) >= sizeof(t2) ? 1 : -1
/*
* Verify that the size previously defined and expected for
* ares_socklen_t is actually the the same as the one reported
* by sizeof() at compile time.
*/
typedef char
__cares_rule_02__
[CareschkszEQ(ares_socklen_t, sizeof(CARES_TYPEOF_ARES_SOCKLEN_T))];
/*
* Verify at compile time that the size of ares_socklen_t as reported
* by sizeof() is greater or equal than the one reported for int for
* the current compilation.
*/
typedef char
__cares_rule_03__
[CareschkszGE(ares_socklen_t, int)];
/* ================================================================ */
/* EXTERNALLY AND INTERNALLY VISIBLE DEFINITIONS */
/* ================================================================ */
/*
* Get rid of macros private to this header file.
*/
#undef CareschkszEQ
#undef CareschkszGE
/*
* Get rid of macros not intended to exist beyond this point.
*/
#undef CARES_PULL_WS2TCPIP_H
#undef CARES_PULL_SYS_TYPES_H
#undef CARES_PULL_SYS_SOCKET_H
#undef CARES_TYPEOF_ARES_SOCKLEN_T
#endif /* __CARES_RULES_H */
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