std::string::c_str()

[vch]

Is it guaranteed that as long as std::string instance doesn't change it
will always return the same pointer with c_str(), and the buffer pointed
by this pointer will contain valid data while std::string instance exists?

 

[Victor Bazarov]

Is it guaranteed that as long as std::string instance doesn't change it
will always return the same pointer with c_str(), and the buffer pointed
by this pointer will contain valid data while std::string instance exists?

No. What is guaranteed that the pointer returned by c_str() remains valid
until the next non-const member function is called for the same string.

V