[Bug c++/105284] New: missing syncstream and spanstream forward decl. in <iosfwd>

[Bug c++/105284] New: missing syncstream and spanstream forward decl. in <iosfwd>

[cooky.ykooc922 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105284

            Bug ID: 105284
           Summary: missing syncstream and spanstream forward decl. in
                    <iosfwd>
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: cooky.ykooc922 at gmail dot com
  Target Milestone: ---

according to https://wg21.link/iosfwd.syn's <iosfwd> sypnosis:

The followings are declared (forward declaration only) which are added in C++20
and C++23:

* class template std::basic_spanbuf
* typedef std:spanbuf
* typedef std::wspanbuf
* class template std::basic_ispanstream
* typedef std::ispanstream
* typedef std::wispanstream
* class template std::basic_ospanstream
* typedef std::ospanstream
* typedef std::wospanstream
* class template std::basic_spanstream
* typedef std::spanstream
* typedef std::wspanstream
* class template std::basic_syncbuf
* typedef std::syncbuf
* typedef std::wsyncbuf
* class template std::basic_osyncstream
* typedef std::osyncstream
* typedef std::wosyncstream

However, they are currently not added in the current header <iosfwd> of
libstdc++

[Bug libstdc++/105284] missing syncstream and spanstream forward decl. in <iosfwd>

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105284

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2022-04-15
     Ever confirmed|0                           |1
   Target Milestone|---                         |12.0

[Bug libstdc++/105284] missing syncstream and spanstream forward decl. in <iosfwd>

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105284

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|12.0                        |12.2

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 12.1 is being released, retargeting bugs to GCC 12.2.

[Bug libstdc++/105284] missing syncstream and spanstream forward decl. in <iosfwd>

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105284

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:

https://gcc.gnu.org/g:1807e07825a86916bbfddca470708c5a8f613612

commit r13-270-g1807e07825a86916bbfddca470708c5a8f613612
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue May 10 13:03:14 2022 +0100

    libstdc++: Add <syncstream> declarations to <iosfwd> [PR105284]

    libstdc++-v3/ChangeLog:

            PR libstdc++/105284
            * include/std/iosfwd: Add declarations for <synstream> class
            templates and typedefs.
            * include/std/syncstream (basic_syncbuf, basic_osyncstream):
            Remove default template arguments.
            * testsuite/27_io/headers/iosfwd/synopsis.cc: New test.
            * testsuite/27_io/headers/iosfwd/types.cc: New test.

[Bug libstdc++/105284] missing syncstream and spanstream forward decl. in <iosfwd>

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105284

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:

https://gcc.gnu.org/g:ca97c87758d450a946cac31b0db43da0039fabf1

commit r13-271-gca97c87758d450a946cac31b0db43da0039fabf1
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue May 10 13:06:47 2022 +0100

    libstdc++: Add <spanstream> declarations to <iosfwd> [PR105284]

    libstdc++-v3/ChangeLog:

            PR libstdc++/105284
            * include/std/iosfwd: Add declarations for <spanstream> class
            templates and typedefs.
            * include/std/spanstream (basic_spanbuf, basic_ispanstream)
            (basic_ospanstream, basic_spanstream): Remove default template
            arguments.
            * testsuite/27_io/headers/iosfwd/synopsis.cc: Add <spanstream>
            declarations.
            * testsuite/27_io/headers/iosfwd/types.cc: Check <spanstream>
            default arguments.

[Bug libstdc++/105284] missing syncstream and spanstream forward decl. in <iosfwd>

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105284

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on trunk, backports to follow.

[Bug libstdc++/105284] missing syncstream and spanstream forward decl. in <iosfwd>

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105284

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:

https://gcc.gnu.org/g:3e6067bdcab5f677526d80325b9b8dc03f49024d

commit r12-8364-g3e6067bdcab5f677526d80325b9b8dc03f49024d
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue May 10 13:03:14 2022 +0100

    libstdc++: Add <syncstream> declarations to <iosfwd> [PR105284]

    libstdc++-v3/ChangeLog:

            PR libstdc++/105284
            * include/std/iosfwd: Add declarations for <synstream> class
            templates and typedefs.
            * include/std/syncstream (basic_syncbuf, basic_osyncstream):
            Remove default template arguments.
            * testsuite/27_io/headers/iosfwd/synopsis.cc: New test.
            * testsuite/27_io/headers/iosfwd/types.cc: New test.

    (cherry picked from commit 1807e07825a86916bbfddca470708c5a8f613612)

[Bug libstdc++/105284] missing syncstream and spanstream forward decl. in <iosfwd>

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105284

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:

https://gcc.gnu.org/g:cc93971399ad9719b5bda878630e69c5914f2202

commit r12-8365-gcc93971399ad9719b5bda878630e69c5914f2202
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue May 10 13:06:47 2022 +0100

    libstdc++: Add <spanstream> declarations to <iosfwd> [PR105284]

    libstdc++-v3/ChangeLog:

            PR libstdc++/105284
            * include/std/iosfwd: Add declarations for <spanstream> class
            templates and typedefs.
            * include/std/spanstream (basic_spanbuf, basic_ispanstream)
            (basic_ospanstream, basic_spanstream): Remove default template
            arguments.
            * testsuite/27_io/headers/iosfwd/synopsis.cc: Add <spanstream>
            declarations.
            * testsuite/27_io/headers/iosfwd/types.cc: Check <spanstream>
            default arguments.

    (cherry picked from commit ca97c87758d450a946cac31b0db43da0039fabf1)

[Bug libstdc++/105284] missing syncstream and spanstream forward decl. in <iosfwd>

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105284

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:

https://gcc.gnu.org/g:1572e41d759950e7699d14779aae49b892f12f8b

commit r11-9977-g1572e41d759950e7699d14779aae49b892f12f8b
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue May 10 13:03:14 2022 +0100

    libstdc++: Add <syncstream> declarations to <iosfwd> [PR105284]

    libstdc++-v3/ChangeLog:

            PR libstdc++/105284
            * include/std/iosfwd: Add declarations for <synstream> class
            templates and typedefs.
            * include/std/syncstream (basic_syncbuf, basic_osyncstream):
            Remove default template arguments.
            * testsuite/27_io/headers/iosfwd/synopsis.cc: New test.
            * testsuite/27_io/headers/iosfwd/types.cc: New test.

    (cherry picked from commit 1807e07825a86916bbfddca470708c5a8f613612)

[Bug libstdc++/105284] missing syncstream and spanstream forward decl. in <iosfwd>

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105284

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
   Target Milestone|12.2                        |11.4
         Resolution|---                         |FIXED

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for 11.4 and 12.2, thanks for the report.