How does std::string's c_str() function return null-terminating string?

Question

I cannot understand if char * returned from string.c_str() points to the same buffer (and not making any copy) how is it null terminated? does the function add null-terminator in the end of string? and what happens if buffer doesn't have any extra bytes to store it?

thanks.

Answer 1

Since C++11, strings are null-terminated internally, and both c_str() and data() return the same thing.