Re: [boost] Re: is_convertible: bug or missing feature?

From: Thomas Witt (witt_at_[hidden])
Date: 2002-05-10 03:47:07

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Dave,

Sorry for my ignorance, but ..

On Friday 10 May 2002 10:23, David Abrahams wrote:
> You're testing assignability, which is a different question. Try:
>
> void f(A<B>);
> int main()
> {
>     f(A<C>());
> }

assign.cpp(9): error: no suitable user-defined conversion from "const A<C>" to 
"B" exists
      A( A<T1> const& rhs ) : T( rhs ) {}
                                 ^
detected during instantiation of "A<T>::A(const A<T1> &) [with T=B, T1=C]" 

compilation aborted for assign.cpp (code 2)

I think the compiler is right in rejecting this. What did I miss ?

Thomas

- -- 
Dipl.-Ing. Thomas Witt
Institut fuer Verkehrswesen, Eisenbahnbau und -betrieb, Universitaet Hannover
voice: [phone] - 4273, fax: [phone]
http://www.ive.uni-hannover.de
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