Why gdb casting is not working?

Question

I use print (CEthPacket*) 0xeb609a0 to examine an object at the given address and get A syntax error in expression, near \') 0xeb609a0\'.

W

Answer 1

Also your starting namespace is the one from current stack. If you want to start from root you have to use ::NS1::NS2::Obj.

Answer 2

You didn't say on which platform, which version of GDB, or what CEthPacket is.

My first guess is that you should try print (struct CEthPacket *) 0xeb609a0 instead.

Answer 3

I just ran into a very similar error. It was caused because I was trying to reference an object that is not defined in the scope of the current stack frame. Try changing to a stack frame where the CEthrPacket object is defined.

Answer 4

I just ran in to similar issue, and, from a colleague of mine, I learnt that you need to provide the namespace that the class belongs to within a single quotes as following:

(gdb) p ('MyScope::MyClass'*) ptr;