On 1/9/15 1:50 PM, John Colvin wrote:
On Friday, 9 January 2015 at 18:35:56 UTC, anonymous wrote:
On Friday, 9 January 2015 at 18:25:42 UTC, John Colvin wrote:
struct S
{
   void* p;
}

void main()
{
   S s;
   auto a = cast(void*)s; //Error: e2ir: cannot cast s of type S to
type void*

This is actually a compiler bug! I will check to make sure it's not already filed, and file if it's not. However, I don't think the code should work, it just shouldn't print e2ir.

}

Is there are a good reason for this being disallowed?

You'd expect `cast(void*)s == s.p`? That doesn't work for any type of p.

I was expecting it to work regardless of the type of p. I have an 8 byte
(on x86_64) struct which I want to reinterpret as a void*

You can do it with a slightly fancier (and more dangerous) cast:
`*cast(void**)&s`.

Yuk. Better than nothing though. Thanks :)

This is what reinterpret_cast from C++ does.

-Steve

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