GDB Printers: Unintialized variable in gdb

[Da Viper]

There is a QDateTime  printer that requires calling a method  to get useful
values.

The problem is when I call the method from gdb the printer crashes because
the variable does not exist yet thus the method does not exist in memory.

Is there a way to check if a variable has been initialised ?

I have tried `info locals`  but that shows all the variable in the current
frame.

I have tried to try and except the error like so

```
try:
    call method here
except Exception:

```

But the Sigsegv exception is not a python exception

I tried checking if the address is null but it's a valid address.

What I am try to mimick is something similar to the LLDB `SBValue.isValid()`

sbValue is similar to gdb.Value but for lldb

see
https://lldb.llvm.org/python_reference/lldb.SBValue-class.html


https://lldb.llvm.org/cpp_reference/classlldb_1_1SBValue.html#ae8d3e7cce0a22bd1fd59db8e3f37af7c
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