Examining static const class members in gdb

Question

How can I print the value of static const class members in gdb?

Say I have:

#include <iostream>

struct foo {
    static const int bar = 5;
};

int main() { 
    std::cout << foo::bar;
    return 0; 
}

How do I examine the contents foo::bar in gdb?

I tried:

(gdb) p foo::bar
No symbol "foo" in current context.
(gdb) p 'foo::bar'
No symbol "foo::bar" in current context.

Answer 1

You can't because gcc does not resolve this to a symbol but to an actual value in the assembly so gdb has nothing to look at. If you needed to you might be able to add the volatile keyword to prevent the compiler from performing this optimization.