1/* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#ifndef SHARE_VM_UTILITIES_COMPILERWARNINGS_HPP 26#define SHARE_VM_UTILITIES_COMPILERWARNINGS_HPP 27 28// Macros related to control of compiler warnings. 29 30// We presently only have interesting macros here for gcc and variants, 31// so it's not worth going through the COMPILER_HEADER() dispatch, with 32// all the non-gcc files being empty. 33#ifdef TARGET_COMPILER_gcc 34 35// Diagnostic pragmas like the ones defined below in PRAGMA_FORMAT_NONLITERAL_IGNORED 36// were only introduced in GCC 4.2. Because we have no other possibility to ignore 37// these warnings for older versions of GCC, we simply don't decorate our printf-style 38// functions with __attribute__(format) in that case. 39#if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)) || (__GNUC__ > 4) 40#ifndef ATTRIBUTE_PRINTF 41#define ATTRIBUTE_PRINTF(fmt,vargs) __attribute__((format(printf, fmt, vargs))) 42#endif 43#ifndef ATTRIBUTE_SCANF 44#define ATTRIBUTE_SCANF(fmt,vargs) __attribute__((format(scanf, fmt, vargs))) 45#endif 46#endif // gcc version check 47 48#define PRAGMA_FORMAT_NONLITERAL_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") \ 49 _Pragma("GCC diagnostic ignored \"-Wformat-security\"") 50#define PRAGMA_FORMAT_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat\"") 51 52#if defined(__clang_major__) && \ 53 (__clang_major__ >= 4 || \ 54 (__clang_major__ >= 3 && __clang_minor__ >= 1)) || \ 55 ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4) 56// Tested to work with clang version 3.1 and better. 57#define PRAGMA_DIAG_PUSH _Pragma("GCC diagnostic push") 58#define PRAGMA_DIAG_POP _Pragma("GCC diagnostic pop") 59 60#endif // clang/gcc version check 61 62#endif // TARGET_COMPILER_gcc 63 64// Defaults when not defined for the TARGET_COMPILER_xxx. 65 66#ifndef ATTRIBUTE_PRINTF 67#define ATTRIBUTE_PRINTF(fmt, vargs) 68#endif 69#ifndef ATTRIBUTE_SCANF 70#define ATTRIBUTE_SCANF(fmt, vargs) 71#endif 72 73#ifndef PRAGMA_FORMAT_NONLITERAL_IGNORED 74#define PRAGMA_FORMAT_NONLITERAL_IGNORED 75#endif 76#ifndef PRAGMA_FORMAT_IGNORED 77#define PRAGMA_FORMAT_IGNORED 78#endif 79 80#ifndef PRAGMA_DIAG_PUSH 81#define PRAGMA_DIAG_PUSH 82#endif 83#ifndef PRAGMA_DIAG_POP 84#define PRAGMA_DIAG_POP 85#endif 86 87#endif // SHARE_VM_UTILITIES_COMPILERWARNINGS_HPP 88