-/* Copyright (C) 2017-2018 Free Software Foundation, Inc.
+/* Copyright (C) 2017-2019 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#ifndef DIAGNOSTICS_H
#define DIAGNOSTICS_H
+/* If at all possible, fix the source rather than using these macros
+ to silence warnings. If you do use these macros be aware that
+ you'll need to condition their use on particular compiler versions,
+ which can be done for gcc using ansidecl.h's GCC_VERSION macro.
+
+ gcc versions between 4.2 and 4.6 do not allow pragma control of
+ diagnostics inside functions, giving a hard error if you try to use
+ the finer control available with later versions.
+ gcc prior to 4.2 warns about diagnostic push and pop.
+
+ The other macros have restrictions too, for example gcc-5, gcc-6
+ and gcc-7 warn that -Wstringop-truncation is unknown, unless you
+ also add DIAGNOSTIC_IGNORE ("-Wpragma"). */
+
#ifdef __GNUC__
# define DIAGNOSTIC_PUSH _Pragma ("GCC diagnostic push")
# define DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop")
+
+/* Stringification. */
+# define DIAGNOSTIC_STRINGIFY_1(x) #x
+# define DIAGNOSTIC_STRINGIFY(x) DIAGNOSTIC_STRINGIFY_1 (x)
+
# define DIAGNOSTIC_IGNORE(option) \
- _Pragma (STRINGIFY (GCC diagnostic ignored option))
+ _Pragma (DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored option))
#else
# define DIAGNOSTIC_PUSH
# define DIAGNOSTIC_POP
#if defined (__clang__) /* clang */
# define DIAGNOSTIC_IGNORE_SELF_MOVE DIAGNOSTIC_IGNORE ("-Wself-move")
+# define DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS \
+ DIAGNOSTIC_IGNORE ("-Wdeprecated-declarations")
# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER \
DIAGNOSTIC_IGNORE ("-Wdeprecated-register")
-# define DIAGNOSTIC_IGNORE_UNUSED_FUNCTION \
- DIAGNOSTIC_IGNORE ("-Wunused-function")
# if __has_warning ("-Wenum-compare-switch")
# define DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES \
DIAGNOSTIC_IGNORE ("-Wenum-compare-switch")
-# else
-# define DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES
# endif
+
+# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \
+ DIAGNOSTIC_IGNORE ("-Wformat-nonliteral")
+
#elif defined (__GNUC__) /* GCC */
-# define DIAGNOSTIC_IGNORE_SELF_MOVE
-# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
-# define DIAGNOSTIC_IGNORE_UNUSED_FUNCTION \
- DIAGNOSTIC_IGNORE ("-Wunused-function")
-# define DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES
+# define DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION \
+ DIAGNOSTIC_IGNORE ("-Wstringop-truncation")
-#else /* Other compilers */
+# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \
+ DIAGNOSTIC_IGNORE ("-Wformat-nonliteral")
+#endif
+
+#ifndef DIAGNOSTIC_IGNORE_SELF_MOVE
# define DIAGNOSTIC_IGNORE_SELF_MOVE
+#endif
+
+#ifndef DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS
+# define DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS
+#endif
+
+#ifndef DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
-# define DIAGNOSTIC_IGNORE_UNUSED_FUNCTION
+#endif
+
+#ifndef DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES
# define DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES
+#endif
+
+#ifndef DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION
+# define DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION
+#endif
+#ifndef DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
+# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
#endif
#endif /* DIAGNOSTICS_H */