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