1 /* Copyright (C) 2017-2022 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_DEPRECATED_REGISTER \ 57 DIAGNOSTIC_IGNORE ("-Wdeprecated-register") 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 # define DIAGNOSTIC_ERROR_SWITCH \ 67 DIAGNOSTIC_ERROR ("-Wswitch") 68 69 #elif defined (__GNUC__) /* GCC */ 70 71 # if __GNUC__ >= 7 72 # define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER \ 73 DIAGNOSTIC_IGNORE ("-Wregister") 74 # endif 75 76 # define DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION \ 77 DIAGNOSTIC_IGNORE ("-Wstringop-truncation") 78 79 # if __GNUC__ >= 11 80 # define DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD \ 81 DIAGNOSTIC_IGNORE ("-Wstringop-overread") 82 #endif 83 84 # define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \ 85 DIAGNOSTIC_IGNORE ("-Wformat-nonliteral") 86 87 /* GCC 4.8's "diagnostic push/pop" seems broken when using this, -Wswitch 88 remains enabled at the error level even after a pop. Therefore, don't 89 use it for GCC < 5. */ 90 # if __GNUC__ >= 5 91 # define DIAGNOSTIC_ERROR_SWITCH DIAGNOSTIC_ERROR ("-Wswitch") 92 # endif 93 94 #endif 95 96 #ifndef DIAGNOSTIC_IGNORE_SELF_MOVE 97 # define DIAGNOSTIC_IGNORE_SELF_MOVE 98 #endif 99 100 #ifndef DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS 101 # define DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS 102 #endif 103 104 #ifndef DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER 105 # define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER 106 #endif 107 108 #ifndef DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES 109 # define DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES 110 #endif 111 112 #ifndef DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION 113 # define DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION 114 #endif 115 116 #ifndef DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD 117 # define DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD 118 #endif 119 120 #ifndef DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL 121 # define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL 122 #endif 123 124 #ifndef DIAGNOSTIC_ERROR_SWITCH 125 # define DIAGNOSTIC_ERROR_SWITCH 126 #endif 127 128 #endif /* DIAGNOSTICS_H */ 129