220 lines
8.3 KiB
C
220 lines
8.3 KiB
C
/* -*- 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 */
|