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