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Subject: Re: What are the procedures to use self declared convenience
 functions in GDB?
To: Nagmat Nazar <nagmat@gmail.com>
Cc: gdb@sourceware.org
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From: Simon Marchi <simark@simark.ca>
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Date: Wed, 18 Nov 2020 15:39:15 -0500
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On 2020-11-18 12:18 a.m., Nagmat Nazar wrote:
> Dear Simon, 
> 
> I have written convenience function as on explanation: 
> https://sourceware.org/gdb/onlinedocs/gdb/Functions-In-Python.html
> greet.py 
> ``` 
> 
> class Greet (gdb.Function):
>   """Return string to greet someone.
> Takes a name as argument."""
> 
>   def __init__ (self):
>     super (Greet, self).__init__ ("greet")
> 
>   def invoke (self, name):
>     return "Hello, %s!" % name.string ()
> 
> Greet ()
> 
> ```
> image.png
> 
> I have placed greet.py into ~/gdb/python/lib/gdb/function/, but as you see on the picture it still gives error. What else shall I do in order to use this function?
> 
> Kind regards
> Nagmat

Just putting the file in ~/gdb/python/lib/gdb/function/ won't magically load it.

You should either use the source command inside GDB (or in a .gdbinit) or the -x switch when starting GDB.

Simon