https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56158
--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Richard's patch changes the values returned by operator~ which is not
desirable.
To fix the underlying type to int in C++03 (so that all values of int will be
valid values of the enumeration type) we can do:
--- a/libstdc++-v3/include/bits/ios_base.h
+++ b/libstdc++-v3/include/bits/ios_base.h
@@ -74,7 +74,9
_S_adjustfield = _S_left | _S_right | _S_internal,
_S_basefield = _S_dec | _S_oct | _S_hex,
_S_floatfield = _S_scientific | _S_fixed,
- _S_ios_fmtflags_end = 1L << 16
+ _S_ios_fmtflags_end = 1L << 16,
+ _S_ios_fmtflags_max = __INT_MAX__,
+ _S_ios_fmtflags_min = ~(int)__INT_MAX__
};
inline _GLIBCXX_CONSTEXPR _Ios_Fmtflags
@@ -114,7 +116,9
_S_in = 1L << 3,
_S_out = 1L << 4,
_S_trunc = 1L << 5,
- _S_ios_openmode_end = 1L << 16
+ _S_ios_openmode_end = 1L << 16,
+ _S_ios_openmode_max = __INT_MAX__,
+ _S_ios_openmode_min = ~(int)__INT_MAX__
};
inline _GLIBCXX_CONSTEXPR _Ios_Openmode
@@ -152,7 +156,9
_S_badbit = 1L << 0,
_S_eofbit = 1L << 1,
_S_failbit = 1L << 2,
- _S_ios_iostate_end = 1L << 16
+ _S_ios_iostate_end = 1L << 16,
+ _S_ios_iostate_max = __INT_MAX__,
+ _S_ios_iostate_min = ~(int)__INT_MAX__
};
inline _GLIBCXX_CONSTEXPR _Ios_Iostate
