--- /dev/null 2019-01-28 17:48:51.000000000 +0800 +++ new/src/share/vm/utilities/compilerWarnings.hpp 2019-01-28 17:48:51.000000000 +0800 @@ -0,0 +1,87 @@ +/* + * Copyright (c) 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_VM_UTILITIES_COMPILERWARNINGS_HPP +#define SHARE_VM_UTILITIES_COMPILERWARNINGS_HPP + +// Macros related to control of compiler warnings. + +// We presently only have interesting macros here for gcc and variants, +// so it's not worth going through the COMPILER_HEADER() dispatch, with +// all the non-gcc files being empty. +#ifdef TARGET_COMPILER_gcc + +// 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_FORMAT_NONLITERAL_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") \ + _Pragma("GCC diagnostic ignored \"-Wformat-security\"") +#define PRAGMA_FORMAT_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat\"") + +#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 // TARGET_COMPILER_gcc + +// Defaults when not defined for the TARGET_COMPILER_xxx. + +#ifndef ATTRIBUTE_PRINTF +#define ATTRIBUTE_PRINTF(fmt, vargs) +#endif +#ifndef ATTRIBUTE_SCANF +#define ATTRIBUTE_SCANF(fmt, vargs) +#endif + +#ifndef PRAGMA_FORMAT_NONLITERAL_IGNORED +#define PRAGMA_FORMAT_NONLITERAL_IGNORED +#endif +#ifndef PRAGMA_FORMAT_IGNORED +#define PRAGMA_FORMAT_IGNORED +#endif + +#ifndef PRAGMA_DIAG_PUSH +#define PRAGMA_DIAG_PUSH +#endif +#ifndef PRAGMA_DIAG_POP +#define PRAGMA_DIAG_POP +#endif + +#endif // SHARE_VM_UTILITIES_COMPILERWARNINGS_HPP