用gdb检查boost shared_ptr

Question

以下是我的源代码:

#include <iostream>
#include <boost/shared_ptr.hpp>

class MyClass
{
    public:
        MyClass()
        {
            i=10;
        }
    private:
        int i;
};


int main(int argc, const char *argv[])
{
    boost::shared_ptr <MyClass> obj(new MyClass());
    return 0;
}

我想检查gdb中的obj,并查看成员变量i的值.

这是我用普通打印得到的:

29          boost::shared_ptr <MyClass> obj(new MyClass());
(gdb) n
30          return 0;
(gdb) p obj
$1 = {px = 0x602010, pn = {pi_ = 0x602030}}

我尝试了此链接中提到的提示,但无法正常工作.

(gdb) call (obj.get())->print()
Cannot evaluate function -- may be inlined

还有其他方法吗？gdb版本是7.0.1.

Answer 1

得到它了.!

(gdb) set print pretty
(gdb) p obj
$5 = {
  px = 0x602010,
  pn = {
    pi_ = 0x602030
  }
}
(gdb) p obj.px
$6 = (MyClass *) 0x602010



(gdb) p *(obj.px)
$7 = {
  i = 10
}