Re: [boost] [utility/swap] MSVC 10 test failure, unsigned long to std::bitset conversion invalid?

Subject: Re: [boost] [utility/swap] MSVC 10 test failure, unsigned long to std::bitset conversion invalid?
From: Richard Webb (richard.webb_at_[hidden])
Date: 2010-03-07 06:24:23

Niels Dekker - address until 2010-10-10 wrote:
> 
> 
>    typedef std::bitset<8> bitset_type;
>    const bitset_type initial_value1 = 1;
>    const bitset_type initial_value2 = 2;
> 
> 

That also seems ok on mingw-4.5, in both c++98 and c++0x modes.

On a side note, GCC 4.5 (4.5.0 20100225 (experimental)) seems to suffer from
the same problem as VC bug 500122 when constructing from a literal 0:

bitset.cpp:7:37: error: call of overloaded 'bitset(int)' is ambiguous

c:\mingw450eq\bin\../lib/gcc/i686-pc-mingw32/4.5.0/../../../../include/c++/4.5.0
/bitset:864:7: note: candidates are: std::bitset<_Nb>::bitset(const char*)
[with
 unsigned int _Nb = 8u]
c:\mingw450eq\bin\../lib/gcc/i686-pc-mingw32/4.5.0/../../../../include/c++/4.5.0
/bitset:792:7: note:                 std::bitset<_Nb>::bitset(long long
unsigned
 int) [with unsigned int _Nb = 8u]
c:\mingw450eq\bin\../lib/gcc/i686-pc-mingw32/4.5.0/../../../../include/c++/4.5.0
/bitset:699:5: note:                 std::bitset<8u>::bitset(const
std::bitset<8
u>&)

As you say though, there are several workarounds for the problem.

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