unable to call functions

[marksilverman]

I'm very excited about duel (I remember using the non-python version back in the 90's). I wonder if it's possible to call functions the same way that the print command does. Currently:
(gdb) dl head-->next->getKey()
Value is not callable (not TYPE_CODE_FUNC).
(gdb) p head->next->getKey()
$68 = "foobar"
At my company we often have containers filled with pointers to a base classes. I'd like to call a virtual function to get more info about the object. I could do it in two steps (get the address in duel and call the function manually) but that won't work in a loop.
Thanks!

[vuvova]

I know. This is one of gdb python API limitations. It can store the "value" (e.g. head->next->getKey a pointer to a member method) in a python variable, but it doesn't allow to call it. Same for internal gdb functions like $_streq. It's reported as https://sourceware.org/bugzilla/show_bug.cgi?id=13326

There's a workaround, to use eval and I believe I'll implement it before gdb is fixed. In our C++ codebase I also often need to traverse a list and call some method

[marksilverman]

Ok, interesting. I hope the workaround doesn't run very slowly.

Another thing I noticed is that the results from duel don't go into gdb's value history (i.e., the special variable '$' or '$1' or '$2', etc). I won't be surprised if that's not possible or easy to fix, but it would be a nice little feature.

Thanks for writing this library, it's really amazing. Some of the advanced constructions are hard to understand, but I'm getting pretty good at it.