Eu tenho esse código c ++ simples:

#include<bits/stdc++.h>

using namespace std;
vector<string> q;

int main()
{
    q.push_back("test1");
    q.push_back("test2");
    cout<<q.front();
    return 0;
}

Quando eu usogdb imprimir variávelq Eu recebo o seguinte erro:

No symbol "q" in current context.

Eu compilo meu programa usando g ++ assim:

 g++ -g a.cpp

E aqui estão os meus comandos gdb:

gdb a.out 
GNU gdb (GDB) 7.12
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For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from a.out...done.
(gdb) b 6
Breakpoint 1 at 0x400c6f: file a.cpp, line 6.
(gdb) r
Starting program: /home/mohammad/Desktop/a.out 

Breakpoint 1, main () at a.cpp:9
9       q.push_back("test");
(gdb) print q
No symbol "q" in current context.