[cfe-dev] [libc++] Why doesn't libc++ define std::vector<bool>::const_reference as bool?

[Eric Fiselier via cfe-dev]

Looking again, it seems like a libc++ bug. Not sure if Howard intended to
be non-conforming here, but it's likely a mistake.

Feel free to file a bug.

/Eric

On Tue, Nov 14, 2017 at 4:20 PM, Hubert Tong <
hubert.reinterpretcast at gmail.com> wrote:

> On Tue, Nov 14, 2017 at 6:13 PM, Eric Fiselier via cfe-dev <
> cfe-dev at lists.llvm.org> wrote:
>
>> Unless I'm mis-reading the spec, `vector<bool>::const_reference` is
>> implementation defined. Not bool. See [vector.bool]
>> <http://eel.is/c++draft/vector.bool>.
>>
> It says:
>
> using const_reference        = bool;
>
>
>
>
>>
>> /Eric
>>
>> On Tue, Nov 14, 2017 at 6:39 AM, Mikhail Maltsev via cfe-dev <
>> cfe-dev at lists.llvm.org> wrote:
>>
>>> Hi. According to the C++ Standard (section [vector.bool]),
>>> std::vector<bool>::const_reference should be defined as bool. libc++
>>> defines it as std::__1::__bit_const_reference<std::__1::vector<bool,
>>> std::__1::allocator<bool>>>]. Is this divergence from the standard
>>> intentional? If it is, what is the purpose?
>>>
>>> --
>>> Regards,
>>>    Mikhail Maltsev
>>>
>>> _______________________________________________
>>> cfe-dev mailing list
>>> cfe-dev at lists.llvm.org
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>>>
>>
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>>
>
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