std::ostrstream::~ostrstream

 

C++

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Feature test macros (C++20)

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Symbols index

External libraries

 

Input/output library

I/O manipulators

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C-style I/O

Buffers

basic_streambuf

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basic_osyncstream (C++20)

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streamoff

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iostream_category (C++11)

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std::ostrstream

Member functions

ostrstream::ostrstream

ostrstream::~ostrstream

ostrstream::rdbuf

ostrstream::str

ostrstream::freeze

ostrstream::pcount

 

virtual ~ostrstream();		(deprecated in C++98) (removed in C++26)

Destroys a std::ostrstream object, which also destroys the member std::strstreambuf, which may call the deallocation function if the underlying buffer was dynamically-allocated and not frozen.

Parameters

(none)

Notes

If str() was called on a dynamic ostrstream and freeze(false) was not called after that, this destructor leaks memory.

Example

Run this code

#include <iostream>
#include <strstream>
 
int main()
{
    {
        std::ostrstream s; // dynamic buffer 
        s << 1.23;
        std::cout << s.str() << '\n';
        s.freeze(false);
    } // destructor called, buffer deallocated 
 
    {
        std::ostrstream s;
        s << 1.23;
        std::cout << s.str() << '\n';
//      buf.freeze(false);
    } // destructor called, memory leaked
}

Output:

1.23
1.23