/*

 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_UTILITIES_COMPILERWARNINGS_GCC_HPP

#define SHARE_UTILITIES_COMPILERWARNINGS_GCC_HPP

// Macros related to control of compiler warnings.

// Diagnostic pragmas like the ones defined below in PRAGMA_FORMAT_NONLITERAL_IGNORED

// were only introduced in GCC 4.2. Because we have no other possibility to ignore

// these warnings for older versions of GCC, we simply don't decorate our printf-style

// functions with __attribute__(format) in that case.

#if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)) || (__GNUC__ > 4)

#ifndef ATTRIBUTE_PRINTF

#define ATTRIBUTE_PRINTF(fmt,vargs)  __attribute__((format(printf, fmt, vargs)))

#endif

#ifndef ATTRIBUTE_SCANF

#define ATTRIBUTE_SCANF(fmt,vargs)  __attribute__((format(scanf, fmt, vargs)))

#endif

#endif // gcc version check

#define PRAGMA_DISABLE_GCC_WARNING_AUX(x) _Pragma(#x)

#define PRAGMA_DISABLE_GCC_WARNING(option_string) \

  PRAGMA_DISABLE_GCC_WARNING_AUX(GCC diagnostic ignored option_string)

#define PRAGMA_FORMAT_NONLITERAL_IGNORED                \

  PRAGMA_DISABLE_GCC_WARNING("-Wformat-nonliteral")     \

  PRAGMA_DISABLE_GCC_WARNING("-Wformat-security")

#define PRAGMA_FORMAT_IGNORED PRAGMA_DISABLE_GCC_WARNING("-Wformat")

// Disable -Wstringop-truncation which is introduced in GCC 8.

// https://gcc.gnu.org/gcc-8/changes.html

#if !defined(__clang_major__) && (__GNUC__ >= 8)

#define PRAGMA_STRINGOP_TRUNCATION_IGNORED PRAGMA_DISABLE_GCC_WARNING("-Wstringop-truncation")

#endif

#if defined(__clang_major__) && \

      (__clang_major__ >= 4 || \

      (__clang_major__ >= 3 && __clang_minor__ >= 1)) || \

    ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)

// Tested to work with clang version 3.1 and better.

#define PRAGMA_DIAG_PUSH             _Pragma("GCC diagnostic push")

#define PRAGMA_DIAG_POP              _Pragma("GCC diagnostic pop")

#endif // clang/gcc version check

#endif // SHARE_UTILITIES_COMPILERWARNINGS_GCC_HPP