gdb: show typeinfo of some data

Question

Basically, I want to get typeid(*this).name(), i.e. the real type of this.

I want to get this in GDB (without modifying the source code). I

Answer 1

This question may be related: vtable in polymorphic class of C++ using gdb:

(gdb) help set print object
Set printing of object's derived type based on vtable info. 

It's not exactly typeid() but it should show the real object type when inspecting a polymorphic pointer (e.g. this in a base class). Naturally works only for classes with a vtable (i.e. at least one virtual method) but so does typeid.