On 8/13/15 11:59 AM, Steven Schveighoffer wrote:
That is definitely a bug. It's because typeid is looking up the derived
type via the vtable, but the compiler should rewrap it with 'shared'
afterwards.
Actually, now that I think about it, I'm not sure how the compiler can
figure this out.
There would have to be a way to construct a TypeInfo_Shared at runtime,
which the compiler shouldn't be doing. Alternatively, it could
proactively create a TypeInfo_Shared (and all the other flavors) for
each class type in the runtime, and then look it up using some hash
mechanism.
This likely isn't fixable.
What you CAN do, however, is:
typeid(typeof(c))
Which should get the *static* type (and that should be TypeInfo_Shared
in both struct and class instances).
So likely this is not a bug, or at the best, a wontfix.
-Steve
