Debugging a program that uses SIGINT with gdb

Question

I frequently work with PostgreSQL for debugging, and it uses SIGINT internally for some of its inter-backend signalling.

As a result when running certain ba

Answer 1

This part of gdb is a bit tricky, both due to its history and also due to the various modes of operation it supports.

One might think that running gdb in a separate terminal and only using attach would help it do the right thing, but I don't think it is that easy.

One way forward might be to only use async execution when debugging, and then use a command to interrupt the inferior. Something like:

(gdb) attach 5555
... attaches
(gdb) continue &
... lots of stuff happens
(gdb) interrupt -a

Depending on your version of gdb you might need to set target-async for this to work.