Problems with PR 21210

[Mark Mitchell]

Gabriel Dos Reis wrote:
> Mark Mitchell <mark@codesourcery.com> writes:
> 
> | PR 21210 is a complaint that G++ 4.0 has stopped allowing conversions
> | from integers to "__complex__ float".  This is a perfectly reasonable
> 
> My reading of the PR is a bit different, especially comment #1
> 
>   typedef float __complex__ fcomplex;
>   fcomplex cplx = fcomplex();
> 
> which effectively produces the error
> 
> 21210.C:2: error: invalid cast from type 'int' to type 'float __complex__'
> 
> which is at least disturbing, because there is not cast and no int
> here.  Rather, there is a default value fcomplex() being requested and
> copied into another fcomplex.  There is no conversion requested.  That
> appears to me to be entirely isolated from the std::complex<> thingy.
> Why is that observation flawed? 

Because the "T()" syntax means zero-initialization for builtin types. 
You will get the same error message if you write "fcomplex(3)".

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Mark Mitchell
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