can not print global objects in gdb

Question

I have this simple c++ code :

#include

using namespace std;
vector q;

int main()
{
    q.push_back(\"test1\");
    q.pus         


        

Answer 1

This issue is somehow related to new gcc Dual ABI, introduced in gcc 5. gdb has poor support of these new C++11 ABI tags. See these bugs for example:

• https://sourceware.org/bugzilla/show_bug.cgi?id=19436
• https://sourceware.org/bugzilla/show_bug.cgi?id=18601

As a workaround you may disable this new gcc ABI by compiling with -D_GLIBCXX_USE_CXX11_ABI=0:

g++ -D_GLIBCXX_USE_CXX11_ABI=0 -g a.cpp