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Showing content from https://cplusplus.github.io/LWG/issue3109 below:

Issue 3109: strstreambuf is copyable

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3109. strstreambuf is copyable

Section: 99 [depr.strstreambuf] Status: New Submitter: Jonathan Wakely Opened: 2018-05-02 Last modified: 2018-06-19

Priority: 4

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Discussion:

In C++03 strstreambuf was not copyable, because basic_streambuf wasn't copyable. In C++11 we made basic_streambuf copyable by derived classes, and strstreambuf doesn't define any special members, so it (unintentionally?) became copyable, with completely unspecified semantics.

VC++ and libc++ make it movable not copyable, and libstdc++ still follows C++03, so it's neither movable nor copyable. Making it movable seems to be the sane option, and consistent with filebuf and stringbuf.

[2018-06-18 after reflector discussion]

Priority set to 4

Proposed resolution:

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