GDB调试器在Code :: blocks中不起作用

Question

Information:
OS: Ubuntu 14.04
IDE: Code::blocks 13.12
Debugger: gdb 7.10

I'm new to code::blocks and was trying out the debugger, but it didn't work. So I'm here to ask you what I could do to find a solution to this problem.

When I click on 'step into' and the XTerm console opens with the message:

warning: GDB: Failed to set controlling teminal: Operation not permitted

And the output is not to be seen anywhere.

Answer 1

I found out there was no real problem, I only had to end the line that I was trying to see with a 'endl'

What I was trying to execute in the debugging session, but couldn't see:

 cout << "Hello World!";

What solved the problem, enabling me to see the output in the debugger:

 cout << "Hello World!" << endl;

Answer 2

Indeed, you need to flush your buffered streams (ie. fflush for FILE* , and .flush for std::stream -s).

But you don't need any IDE to run gdb . You could run it in a plain terminal, try gdb or gdb -tui or gdb --args or in Emacs