Re: [boost] [rfc] small flags library

From: Marat Khalili (0x8.0p15_at_[hidden])
Date: 2007-08-22 15:00:35

Iain Denniston wrote:
> Apologies for the delayed response - things got a bit mad here.
> 
>> Its argument is <CODE>std::ios_base::fmtflags</CODE> here.
> 
> Yes - but fmtflags is simply typedef'd to int somewhere deep in the STL. 
> Certainly this is the case with STLPort and the dinkumare STL (built in 
> VC version of STL). Hence anything that is an int or can be converted to 
> one can be passed as an argument to the function - the precise problem 
> I'm trying to fix.

Somehow it doesn't compile here, but it can be a feature of g++. 
Unfortunately I have no other compiler to test.

with -pedantic:
> test.cpp:10: error: No match for `ostream::flags(const int &)'
> ios_base.h:550: note: candidates are: _Ios_Fmtflags ios_base::flags() const
> ios_base.h:561: note:  _Ios_Fmtflags ios_base::flags(_Ios_Fmtflags) <near match>

without:
> test.cpp:10: error: invalid conversion from `int' to `_Ios_Fmtflags'
> test.cpp:10: error:   initializing argument 1 of `_Ios_Fmtflags ios_base::flags(_Ios_Fmtflags)'

If limited to g++ now, then of course same feature for all platforms 
will be useful.

With Best Regards,
Marat