1 /* Copyright (C) 2017-2024 Free Software Foundation, Inc. 2 3 This program is free software; you can redistribute it and/or modify 4 it under the terms of the GNU General Public License as published by 5 the Free Software Foundation; either version 3 of the License, or 6 (at your option) any later version. 7 8 This program is distributed in the hope that it will be useful, 9 but WITHOUT ANY WARRANTY; without even the implied warranty of 10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License 14 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 15 16 #ifndef DIAGNOSTICS_H 17 #define DIAGNOSTICS_H 18 19 /* If at all possible, fix the source rather than using these macros 20 to silence warnings. If you do use these macros be aware that 21 you'll need to condition their use on particular compiler versions, 22 which can be done for gcc using ansidecl.h's GCC_VERSION macro. 23 24 gcc versions between 4.2 and 4.6 do not allow pragma control of 25 diagnostics inside functions, giving a hard error if you try to use 26 the finer control available with later versions. 27 gcc prior to 4.2 warns about diagnostic push and pop. 28 29 The other macros have restrictions too, for example gcc-5, gcc-6 30 and gcc-7 warn that -Wstringop-truncation is unknown, unless you 31 also add DIAGNOSTIC_IGNORE ("-Wpragma"). */ 32 33 #ifdef __GNUC__ 34 # define DIAGNOSTIC_PUSH _Pragma ("GCC diagnostic push") 35 # define DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop") 36 37 /* Stringification. */ 38 # define DIAGNOSTIC_STRINGIFY_1(x) #x 39 # define DIAGNOSTIC_STRINGIFY(x) DIAGNOSTIC_STRINGIFY_1 (x) 40 41 # define DIAGNOSTIC_IGNORE(option) \ 42 _Pragma (DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored option)) 43 # define DIAGNOSTIC_ERROR(option) \ 44 _Pragma (DIAGNOSTIC_STRINGIFY (GCC diagnostic error option)) 45 #else 46 # define DIAGNOSTIC_PUSH 47 # define DIAGNOSTIC_POP 48 # define DIAGNOSTIC_IGNORE(option) 49 #endif 50 51 #if defined (__clang__) /* clang */ 52 53 # define DIAGNOSTIC_IGNORE_SELF_MOVE DIAGNOSTIC_IGNORE ("-Wself-move") 54 # define DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS \ 55 DIAGNOSTIC_IGNORE ("-Wdeprecated-declarations") 56 # define DIAGNOSTIC_IGNORE_REGISTER DIAGNOSTIC_IGNORE ("-Wregister") 57 58 # if __has_warning ("-Wenum-compare-switch") 59 # define DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES \ 60 DIAGNOSTIC_IGNORE ("-Wenum-compare-switch") 61 # endif 62 63 # define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \ 64 DIAGNOSTIC_IGNORE ("-Wformat-nonliteral") 65 66 # if __has_warning ("-Wuser-defined-warnings") 67 # define DIAGNOSTIC_IGNORE_USER_DEFINED_WARNINGS \ 68 DIAGNOSTIC_IGNORE ("-Wuser-defined-warnings") 69 # endif 70 71 # if __has_warning ("-Wunused-but-set-variable") 72 # define DIAGNOSTIC_IGNORE_UNUSED_BUT_SET_VARIABLE \ 73 DIAGNOSTIC_IGNORE ("-Wunused-but-set-variable") 74 # endif 75 76 # define DIAGNOSTIC_ERROR_SWITCH \ 77 DIAGNOSTIC_ERROR ("-Wswitch") 78 79 # if __has_warning ("-Wenum-constexpr-conversion") 80 # define DIAGNOSTIC_IGNORE_ENUM_CONSTEXPR_CONVERSION \ 81 DIAGNOSTIC_IGNORE ("-Wenum-constexpr-conversion") 82 # endif 83 84 #elif defined (__GNUC__) /* GCC */ 85 86 # define DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS \ 87 DIAGNOSTIC_IGNORE ("-Wdeprecated-declarations") 88 89 # if __GNUC__ >= 7 90 # define DIAGNOSTIC_IGNORE_REGISTER DIAGNOSTIC_IGNORE ("-Wregister") 91 # endif 92 93 # define DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION \ 94 DIAGNOSTIC_IGNORE ("-Wstringop-truncation") 95 96 # if __GNUC__ >= 11 97 # define DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD \ 98 DIAGNOSTIC_IGNORE ("-Wstringop-overread") 99 #endif 100 101 # define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \ 102 DIAGNOSTIC_IGNORE ("-Wformat-nonliteral") 103 104 # if __GNUC__ >= 5 105 # define DIAGNOSTIC_IGNORE_UNUSED_BUT_SET_VARIABLE \ 106 DIAGNOSTIC_IGNORE ("-Wunused-but-set-variable") 107 # endif 108 109 # if __GNUC__ >= 13 110 # define DIAGNOSTIC_IGNORE_SELF_MOVE DIAGNOSTIC_IGNORE ("-Wself-move") 111 # endif 112 113 /* GCC 4.8's "diagnostic push/pop" seems broken when using this, -Wswitch 114 remains enabled at the error level even after a pop. Therefore, don't 115 use it for GCC < 5. */ 116 # if __GNUC__ >= 5 117 # define DIAGNOSTIC_ERROR_SWITCH DIAGNOSTIC_ERROR ("-Wswitch") 118 # endif 119 120 #endif 121 122 #ifndef DIAGNOSTIC_IGNORE_SELF_MOVE 123 # define DIAGNOSTIC_IGNORE_SELF_MOVE 124 #endif 125 126 #ifndef DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS 127 # define DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS 128 #endif 129 130 #ifndef DIAGNOSTIC_IGNORE_REGISTER 131 # define DIAGNOSTIC_IGNORE_REGISTER 132 #endif 133 134 #ifndef DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES 135 # define DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES 136 #endif 137 138 #ifndef DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION 139 # define DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION 140 #endif 141 142 #ifndef DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD 143 # define DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD 144 #endif 145 146 #ifndef DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL 147 # define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL 148 #endif 149 150 #ifndef DIAGNOSTIC_IGNORE_USER_DEFINED_WARNINGS 151 # define DIAGNOSTIC_IGNORE_USER_DEFINED_WARNINGS 152 #endif 153 154 #ifndef DIAGNOSTIC_IGNORE_UNUSED_BUT_SET_VARIABLE 155 # define DIAGNOSTIC_IGNORE_UNUSED_BUT_SET_VARIABLE 156 #endif 157 158 #ifndef DIAGNOSTIC_ERROR_SWITCH 159 # define DIAGNOSTIC_ERROR_SWITCH 160 #endif 161 162 #ifndef DIAGNOSTIC_IGNORE_ENUM_CONSTEXPR_CONVERSION 163 # define DIAGNOSTIC_IGNORE_ENUM_CONSTEXPR_CONVERSION 164 #endif 165 166 #endif /* DIAGNOSTICS_H */ 167