std::basic_istream::~basic_istream
From cppreference.com
< cpp | io | basic istream
| virtual ~basic_istream();
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Destructs the input stream.
[edit] Notes
This destructor does not perform any operation on the underlying streambuffer (rdbuf()): the destructors of the derived input streams such as std::basic_ifstream and std::basic_istringstream are responsible for calling the destructors of the streambuffers.
[edit] Example
Run this code
#include <sstream> #include <iostream> void print_stringbuf(std::streambuf* p) { std::istream buf(p); // buf shares the buffer with s1 int n; buf >> n; std::cout << n; } // calls the destructor of buf. p remains unaffected int main() { std::istringstream s1("10 20"); print_stringbuf(s1.rdbuf()); int n; s1 >> n; std::cout << ',' << n << '\n'; }
Output:
10,20