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Ignores -Wattributes for GCC 7 and 8 to mask compiler bug. (#79)

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See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89325
This bug produces massive amounts of spurious warnings and is present
in the version of g++ currently available in RHEL devtoolset-7 and devtoolset-8.
This commit is contained in:
CJ Smith 2019-12-07 00:15:47 -05:00 committed by Anton Bachin
parent fa39f5c89e
commit 5dcd59bd29
1 changed files with 21 additions and 0 deletions
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21
enum.h
View File

@ -27,16 +27,31 @@
# define BETTER_ENUMS_IGNORE_OLD_CAST_HEADER _Pragma("GCC diagnostic push")
# define BETTER_ENUMS_IGNORE_OLD_CAST_BEGIN _Pragma("GCC diagnostic ignored \"-Wold-style-cast\"")
# define BETTER_ENUMS_IGNORE_OLD_CAST_END _Pragma("GCC diagnostic pop")
# if (BETTER_ENUMS_GCC_VERSION >= 70300)
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_HEADER _Pragma("GCC diagnostic push")
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_BEGIN _Pragma("GCC diagnostic ignored \"-Wattributes\"")
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_END _Pragma("GCC diagnostic pop")
# else
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_HEADER
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_BEGIN
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_END
# endif
# else
# define BETTER_ENUMS_IGNORE_OLD_CAST_HEADER
# define BETTER_ENUMS_IGNORE_OLD_CAST_BEGIN
# define BETTER_ENUMS_IGNORE_OLD_CAST_END
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_HEADER
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_BEGIN
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_END
# endif
# endif
#else // empty definitions for compilers that don't support _Pragma
# define BETTER_ENUMS_IGNORE_OLD_CAST_HEADER
# define BETTER_ENUMS_IGNORE_OLD_CAST_BEGIN
# define BETTER_ENUMS_IGNORE_OLD_CAST_END
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_HEADER
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_BEGIN
# define BETTER_ENUMS_IGNORE_ATTRIBUTES_END
#endif
// Feature detection.
@ -729,12 +744,15 @@ BETTER_ENUMS_ID(GenerateStrings(Enum, __VA_ARGS__)) \
\
} \
\
BETTER_ENUMS_IGNORE_ATTRIBUTES_HEADER \
BETTER_ENUMS_IGNORE_ATTRIBUTES_BEGIN \
BETTER_ENUMS_UNUSED BETTER_ENUMS_CONSTEXPR_ \
inline const Enum \
operator +(Enum::_enumerated enumerated) \
{ \
return static_cast<Enum>(enumerated); \
} \
BETTER_ENUMS_IGNORE_ATTRIBUTES_END \
\
BETTER_ENUMS_CONSTEXPR_ inline Enum::_optional_index \
Enum::_from_value_loop(Enum::_integral value, std::size_t index) \
@ -905,6 +923,8 @@ ToStringConstexpr inline Enum::_name_iterable Enum::_names() \
\
DefineInitialize(Enum) \
\
BETTER_ENUMS_IGNORE_ATTRIBUTES_HEADER \
BETTER_ENUMS_IGNORE_ATTRIBUTES_BEGIN \
BETTER_ENUMS_UNUSED BETTER_ENUMS_CONSTEXPR_ \
inline bool operator ==(const Enum &a, const Enum &b) \
{ return a._to_integral() == b._to_integral(); } \
@ -928,6 +948,7 @@ inline bool operator >(const Enum &a, const Enum &b) \
BETTER_ENUMS_UNUSED BETTER_ENUMS_CONSTEXPR_ \
inline bool operator >=(const Enum &a, const Enum &b) \
{ return a._to_integral() >= b._to_integral(); } \
BETTER_ENUMS_IGNORE_ATTRIBUTES_END \
\
\
template <typename Char, typename Traits> \