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 TARGET_COMPILER_HEADER() dispatch, 32 // with 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