Need clear error msg. (template instantiating)

[Moritz Warning]

On Sat, 28 Feb 2009 13:36:25 -0500, CLXX wrote:

> I need clear error-messages of compiling. See this code.
> 
> // example.d
> import std.conv: to;
> void main( ){
>     S s;
>     to!( int )( s ); // 'to' does not support struct-argument.
> }
> struct S{
> }
> 
> 'to' cannot convert 'S' to 'int', so that this is error. Then I got
> mysterious messages.
> 
> "src\phobos\std\conv.d(344): Error: cannot implicitly convert expression
> (value) of type S to int" "src\phobos\std\conv.d(206): template instance
> std.conv.toImpl!(S,int) error instantiating" "src\phobos\std\conv.d(4):
> template instance std.conv.to!(int).to!(S) error instantiating"
> 
> We know 'std.conv.d' has no error, and assume 'example.d' has some. The
> problem is 'std.conv.d' seems to have errors.
> 
> The message should be as follows.
> 
> "example.d(5): template instance to!(S)(int,S) does not match template
> declaration."
> 
> Thank you for your reading.

What do you expect the integer from such a struct to be?
What you are trying to do makes no sense to me.
The compiler tells you the same.