gdb evaluate function in process core

Question

Is there a way to execute function in process core context in GDB?

The incentive is to run a function that will go through a large tree to find a specific node. I can walk the tree manually but I would like to build a function that will help me analyze the core.

Hence either a function or "GDB script" to run over the data tree.

Answer 1

Is there a way to execute function in process core context in GDB?

No: you need a "live" inferior process for that.

I can walk the tree manually but I would like to build a function that will help me analyze the core.

You can do that using Python scripting built into recent GDB versions.

Answer 2

gdb can call C functions. If you type p myfunction(...parameters...), gdb will evaluate the expression and print the returned value. Of course, the program you're debugging must be stopped.