std::basic_streambuf<CharT,Traits>::~basic_streambuf
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< cpp | io | basic streambuf
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basic_streambuf::~basic_streambuf
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virtual ~basic_streambuf();
This destructor has no effect: the members of this basic_streambuf (the pointers and the locale) are destructed in accordance with the usual object destruction sequence after this destructor returns. However, since it is declared public virtual, it allows the objects that are derived from std::basic_streambuf to be deleted through a pointer to base class.
Contents
[edit] Parameters
(none)
[edit] Example
Run this code
#include <fstream> #include <iostream> int main() { std::filebuf * fbp = new std::filebuf ; fbp->open("test.txt", std::ios_base::out ); fbp->sputn("Hello\n", 6); std::streambuf * sbp = fbp; delete sbp; // the file is closed, output flushed and written std::ifstream f("test.txt"); std::cout << f.rdbuf(); // proof }
Output:
Hello
[edit] Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 54 | C++98 | the effect of the destructor was not specified | specified as no effect |