Getting the typeid of an object disguised under an interface

[Adam D. Ruppe via Digitalmars-d]

On Monday, 28 March 2016 at 11:58:17 UTC, Tomer Filiba wrote:
> Object interfaceToObject(I)(I obj) if (is(I == interface)) {
>     import object;
>     return cast(Object)(cast(void*)obj - 
> ((cast(Interface*)obj.__vptr[0]).offset));
> }

eeek, plain `cast(Object) obj` works for this! You don't need all 
that other stuff.

> It would be really nice if TraceInfo exposed the callstack to 
> the user. It only provides an opApply that converts to it 
> string... adding a simple property such as

You could always call the backtrace function from the debug info 
if you are on Linux.

http://man7.org/linux/man-pages/man3/backtrace.3.html

That's what trace info used to do. (now it does it itself but 
same thing)