xref: /netbsd-src/external/gpl3/binutils.old/dist/include/diagnostics.h (revision c42dbd0ed2e61fe6eda8590caa852ccf34719964)
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