From: David Abrahams (dave_at_[hidden])
Date: 2005-03-14 17:25:09
"Eric Niebler" <eric_at_[hidden]> writes:
> Eric Niebler wrote:
>> Peter Dimov wrote:
>>> Eric Niebler wrote:
>>>>> +// Borland doesn't like casting an array reference to a char
>>>>> reference +// but thes overloads work around the problem.
>>>>> +# if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
>>>>> +template<typename T,std::size_t N>
>>>>> +T (*addressof(T (&t)[N]))[N]
>>>>> + return reinterpret_cast<T(*)[N]>(&t);
>>> Why are you reinterpret_casting &t to itself? Is this a Borland
>>> problem as well?
>> Russell added the reinterpret_casts to my patch. Russell, can you
> And here is Russell's reply. Looks like it's necessary.
> Truth is, I'm not sure why I reinterpret_cast t to its own type, but
> without it (i.e just return &t as Eric's original solution), FOREACH
> still gives these errors
> [C++] main.cpp(1):
> [C++ Error] addressof.hpp(42): E2034 Cannot convert 'int *' to 'int ( *)'
> [C++ Error] addressof.hpp(49): E2034 Cannot convert 'const int *' to
> 'int ( *) const'
> As far as I can tell, the reinterpret_cast I've added isn't casting t to
> itself, as t is a T(&)[N], I'm reinterpret_casting it to the function
> return type, T(*)[N].
> If this is incorrect, I can try other solutions if anyone has any
> suggestions, but just return &t doesn't work with bcc32-5.6.4.
You might see if static_cast works there.
-- Dave Abrahams Boost Consulting www.boost-consulting.com
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