Question

I have simple console application in C++ written in Qt Creator 2.4.1 on Kubuntu 12.04. My app have simple menu where you choose what you want to do (using std::cin and getline()).

The problem is that I cannot input data in console in Qt Creator. So I use option “Run in terminal” (xterm). But when I want to run debugger I get “ptrace operation not allowed”.

So:

1. In QtCreator console I cannot input data (debugger working)
2. In terminal I cannot use debugger (ptrace operation not allowed)

I need both: input data and debugger.

Any solutions how to handle this?

Answer 1

I found this solution after quick googling:

$ sudo su -
$ echo 0 > /proc/sys/kernel/yama/ptrace_scope

After doing this, I was able to run the application in debug modus, but the debugger did not stop at my breakpoints. Maybe it will work for your application.