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Diffstat (limited to '3rdParty/CAres/src/ares_rules.h')
-rw-r--r-- | 3rdParty/CAres/src/ares_rules.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/3rdParty/CAres/src/ares_rules.h b/3rdParty/CAres/src/ares_rules.h new file mode 100644 index 0000000..65bc1eb --- /dev/null +++ b/3rdParty/CAres/src/ares_rules.h @@ -0,0 +1,145 @@ +#ifndef __CARES_RULES_H +#define __CARES_RULES_H + +/* $Id: ares_rules.h,v 1.3 2009-10-27 16:56:20 yangtse Exp $ */ + +/* 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_SIZEOF_LONG +# error "CARES_SIZEOF_LONG definition is missing!" + Error Compilation_aborted_CARES_SIZEOF_LONG_is_missing +#endif + +#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 + +#ifndef CARES_SIZEOF_ARES_SOCKLEN_T +# error "CARES_SIZEOF_ARES_SOCKLEN_T definition is missing!" + Error Compilation_aborted_CARES_SIZEOF_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 long + * is the same as the one reported by sizeof() at compile time. + */ + +typedef char + __cares_rule_01__ + [CareschkszEQ(long, CARES_SIZEOF_LONG)]; + +/* + * 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, CARES_SIZEOF_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 */ |