| /* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ |
| /* |
| * Copyright (c) 1993, 1994, 1995, 1996, 1997 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the Computer Systems |
| * Engineering Group at Lawrence Berkeley Laboratory. |
| * 4. Neither the name of the University nor of the Laboratory may be used |
| * to endorse or promote products derived from this software without |
| * specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #ifndef _diag_control_h |
| #define _diag_control_h |
| |
| #include "pcap/compiler-tests.h" |
| |
| #ifndef _MSC_VER |
| /* |
| * Clang and GCC both support this way of putting pragmas into #defines. |
| * We don't use it unless we have a compiler that supports it; the |
| * warning-suppressing pragmas differ between Clang and GCC, so we test |
| * for both of those separately. |
| */ |
| #define PCAP_DO_PRAGMA(x) _Pragma (#x) |
| #endif |
| |
| /* |
| * Suppress Flex warnings. |
| */ |
| #if defined(_MSC_VER) |
| /* |
| * This is Microsoft Visual Studio; we can use __pragma(warning(disable:XXXX)) |
| * and __pragma(warning(push/pop)). |
| * |
| * Suppress signed-vs-unsigned comparison, narrowing, and unreachable |
| * code warnings. |
| */ |
| #define DIAG_OFF_FLEX \ |
| __pragma(warning(push)) \ |
| __pragma(warning(disable:4127)) \ |
| __pragma(warning(disable:4242)) \ |
| __pragma(warning(disable:4244)) \ |
| __pragma(warning(disable:4702)) |
| #define DIAG_ON_FLEX __pragma(warning(pop)) |
| #elif PCAP_IS_AT_LEAST_CLANG_VERSION(2,8) |
| /* |
| * This is Clang 2.8 or later; we can use "clang diagnostic |
| * ignored -Wxxx" and "clang diagnostic push/pop". |
| * |
| * Suppress -Wdocumentation warnings; GCC doesn't support -Wdocumentation, |
| * at least according to the GCC 7.3 documentation. Apparently, Flex |
| * generates code that upsets at least some versions of Clang's |
| * -Wdocumentation. |
| */ |
| #define DIAG_OFF_FLEX \ |
| PCAP_DO_PRAGMA(clang diagnostic push) \ |
| PCAP_DO_PRAGMA(clang diagnostic ignored "-Wsign-compare") \ |
| PCAP_DO_PRAGMA(clang diagnostic ignored "-Wdocumentation") \ |
| PCAP_DO_PRAGMA(clang diagnostic ignored "-Wmissing-noreturn") \ |
| PCAP_DO_PRAGMA(clang diagnostic ignored "-Wunused-parameter") \ |
| PCAP_DO_PRAGMA(clang diagnostic ignored "-Wunreachable-code") |
| #define DIAG_ON_FLEX \ |
| PCAP_DO_PRAGMA(clang diagnostic pop) |
| #elif PCAP_IS_AT_LEAST_GNUC_VERSION(4,6) |
| /* |
| * This is GCC 4.6 or later, or a compiler claiming to be that. |
| * We can use "GCC diagnostic ignored -Wxxx" (introduced in 4.2) |
| * and "GCC diagnostic push/pop" (introduced in 4.6). |
| */ |
| #define DIAG_OFF_FLEX \ |
| PCAP_DO_PRAGMA(GCC diagnostic push) \ |
| PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wsign-compare") \ |
| PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wunused-parameter") \ |
| PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wunreachable-code") |
| #define DIAG_ON_FLEX \ |
| PCAP_DO_PRAGMA(GCC diagnostic pop) |
| #else |
| /* |
| * Neither Visual Studio, nor Clang 2.8 or later, nor GCC 4.6 or later |
| * or a compiler claiming to be that; there's nothing we know of that |
| * we can do. |
| */ |
| #define DIAG_OFF_FLEX |
| #define DIAG_ON_FLEX |
| #endif |
| |
| #ifdef YYBYACC |
| /* |
| * Berkeley YACC. |
| * |
| * It generates a global declaration of yylval, or the appropriately |
| * prefixed version of yylval, in grammar.h, *even though it's been |
| * told to generate a pure parser, meaning it doesn't have any global |
| * variables*. Bison doesn't do this. |
| * |
| * That causes a warning due to the local declaration in the parser |
| * shadowing the global declaration. |
| * |
| * So, if the compiler warns about that, we turn off -Wshadow warnings. |
| * |
| * In addition, the generated code may have functions with unreachable |
| * code, so suppress warnings about those. |
| */ |
| #if defined(_MSC_VER) |
| /* |
| * This is Microsoft Visual Studio; we can use |
| * __pragma(warning(disable:XXXX)) and __pragma(warning(push/pop)). |
| */ |
| #define DIAG_OFF_BISON_BYACC \ |
| __pragma(warning(push)) \ |
| __pragma(warning(disable:4702)) |
| #define DIAG_ON_BISON_BYACC __pragma(warning(pop)) |
| #elif PCAP_IS_AT_LEAST_CLANG_VERSION(2,8) |
| /* |
| * This is Clang 2.8 or later; we can use "clang diagnostic |
| * ignored -Wxxx" and "clang diagnostic push/pop". |
| */ |
| #define DIAG_OFF_BISON_BYACC \ |
| PCAP_DO_PRAGMA(clang diagnostic push) \ |
| PCAP_DO_PRAGMA(clang diagnostic ignored "-Wshadow") \ |
| PCAP_DO_PRAGMA(clang diagnostic ignored "-Wunreachable-code") |
| #define DIAG_ON_BISON_BYACC \ |
| PCAP_DO_PRAGMA(clang diagnostic pop) |
| #elif PCAP_IS_AT_LEAST_GNUC_VERSION(4,6) |
| /* |
| * This is GCC 4.6 or later, or a compiler claiming to be that. |
| * We can use "GCC diagnostic ignored -Wxxx" (introduced in 4.2) |
| * and "GCC diagnostic push/pop" (introduced in 4.6). |
| */ |
| #define DIAG_OFF_BISON_BYACC \ |
| PCAP_DO_PRAGMA(GCC diagnostic push) \ |
| PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wshadow") \ |
| PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wunreachable-code") |
| #define DIAG_ON_BISON_BYACC \ |
| PCAP_DO_PRAGMA(GCC diagnostic pop) |
| #else |
| /* |
| * Neither Clang 2.8 or later nor GCC 4.6 or later or a compiler |
| * claiming to be that; there's nothing we know of that we can do. |
| */ |
| #define DIAG_OFF_BISON_BYACC |
| #define DIAG_ON_BISON_BYACC |
| #endif |
| #else |
| /* |
| * Bison. |
| * |
| * The generated code may have functions with unreachable code, so |
| * suppress warnings about those. |
| */ |
| #if defined(_MSC_VER) |
| /* |
| * This is Microsoft Visual Studio; we can use |
| * __pragma(warning(disable:XXXX)) and __pragma(warning(push/pop)). |
| * |
| * Suppress some /Wall warnings. |
| */ |
| #define DIAG_OFF_BISON_BYACC \ |
| __pragma(warning(push)) \ |
| __pragma(warning(disable:4127)) \ |
| __pragma(warning(disable:4242)) \ |
| __pragma(warning(disable:4244)) \ |
| __pragma(warning(disable:4702)) |
| #define DIAG_ON_BISON_BYACC __pragma(warning(pop)) |
| #elif PCAP_IS_AT_LEAST_CLANG_VERSION(2,8) |
| /* |
| * This is Clang 2.8 or later; we can use "clang diagnostic |
| * ignored -Wxxx" and "clang diagnostic push/pop". |
| */ |
| #define DIAG_OFF_BISON_BYACC \ |
| PCAP_DO_PRAGMA(clang diagnostic push) \ |
| PCAP_DO_PRAGMA(clang diagnostic ignored "-Wunreachable-code") |
| #define DIAG_ON_BISON_BYACC \ |
| PCAP_DO_PRAGMA(clang diagnostic pop) |
| #elif PCAP_IS_AT_LEAST_GNUC_VERSION(4,6) |
| /* |
| * This is GCC 4.6 or later, or a compiler claiming to be that. |
| * We can use "GCC diagnostic ignored -Wxxx" (introduced in 4.2) |
| * and "GCC diagnostic push/pop" (introduced in 4.6). |
| */ |
| #define DIAG_OFF_BISON_BYACC \ |
| PCAP_DO_PRAGMA(GCC diagnostic push) \ |
| PCAP_DO_PRAGMA(GCC diagnostic ignored "-Wunreachable-code") |
| #define DIAG_ON_BISON_BYACC \ |
| PCAP_DO_PRAGMA(GCC diagnostic pop) |
| #else |
| /* |
| * Neither Clang 2.8 or later nor GCC 4.6 or later or a compiler |
| * claiming to be that; there's nothing we know of that we can do. |
| */ |
| #define DIAG_OFF_BISON_BYACC |
| #define DIAG_ON_BISON_BYACC |
| #endif |
| #endif |
| |
| #endif /* _diag_control_h */ |
