pass c_str return value of temporary object to printf

Question

Is the following piece of code valid?

class A { string m_name;
public:
string getName() { return m_name; }
}

.....
printf("%s", object.getName().c_str())
......

where object.getName() returns a temporary string object.

Answer 1

The temporary string will persist for until printf() completes so yes, it is safe and legal.