This page is a snapshot from the LWG issues list, see the Library Active Issues List for more information and the meaning of C++20 status.

### 3128. `strstream::rdbuf` needs a `const_cast`

Section: D.12.5.4 [depr.strstream.oper] Status: C++20 Submitter: Tim Song Opened: 2018-06-30 Last modified: 2021-02-25

Priority: 0

View all issues with C++20 status.

Discussion:

`strstream::rdbuf` has the same issue with a missing `const_cast` on `&sb`.

Somewhat amusingly, `istrstream::rdbuf` and `ostrstream::rdbuf` got this right, but each with a different style (see issue 252).

[2018-07-20 Status to Tentatively Ready after five positive votes on the reflector.]

[2018-11, Adopted in San Diego]

Proposed resolution:

This wording is relative to N4750.

1. Change D.12.5.4 [depr.strstream.oper] p1 as indicated:

   >     strstreambuf* rdbuf() const;

   > > -1- Returns: `const_cast<strstreambuf*>(&sb)`.