I am getting the following from gdb:

enter image description here

Below is the source of the program and the tutorial it came from. BAsed on what is going on in the tutorial, I should not be getting an error.

int main()
    int a = 5;
    int b = a + 6;
    return b;


1 Answer 1


You need debugging symbols for the variable names to be defined in GDB. Did you compile with the -g switch?

  • Yes, and after compiling it again it worked fine.
    – user8058
    Jul 14, 2014 at 20:13
  • You mean the debugging or the program worked? If the debugging is working as you wanted please mark this question as solved.
    – ekse
    Jul 15, 2014 at 0:12

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