[Bug c++/41723] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template

[Bug c++/41723] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41723

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-03-27
                 CC|gcc-bugs at gcc dot gnu.org        |
             Blocks|                            |65608
     Ever confirmed|0                           |1

[Bug c++/41723] [8/9/10/11 Regression] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41723

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org
                 CC|                            |jason at gcc dot gnu.org
             Status|NEW                         |ASSIGNED

[Bug c++/41723] [8/9/10/11 Regression] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41723

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:fb5ed6d8c90a4bf8e677a3ff9bd79d83636ccff9

commit r11-8035-gfb5ed6d8c90a4bf8e677a3ff9bd79d83636ccff9
Author: Jason Merrill <jason@redhat.com>
Date:   Wed Apr 7 16:42:44 2021 -0400

    c++: friend with redundant qualification [PR41723]

    Different code paths were correctly choosing to look up D directly, since C
    is the current instantiation, but here we decided to try to make it a
    typename type, leading to confusion.  Fixed by using dependent_scope_p as
we
    do elsewhere.

    gcc/cp/ChangeLog:

            PR c++/41723
            * parser.c (cp_parser_class_name): Check dependent_scope_p.

    gcc/testsuite/ChangeLog:

            PR c++/41723
            * g++.dg/template/friend71.C: New test.

[Bug c++/41723] [8/9/10 Regression] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41723

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[8/9/10/11 Regression]      |[8/9/10 Regression] Error
                   |Error when using a          |when using a qualified name
                   |qualified name to declare a |to declare a nested
                   |nested template             |template instantiation as a
                   |instantiation as a friend   |friend of the containing
                   |of the containing template  |template
      Known to work|                            |11.0

--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 11 so far.

[Bug c++/41723] [9/10 Regression] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41723

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|8.5                         |9.4

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8 branch is being closed.

[Bug c++/41723] [9/10 Regression] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41723

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:

https://gcc.gnu.org/g:e41d610696b81e72d1d06db176b281424e32fc23

commit r10-9851-ge41d610696b81e72d1d06db176b281424e32fc23
Author: Jason Merrill <jason@redhat.com>
Date:   Wed Apr 7 16:42:44 2021 -0400

    c++: friend with redundant qualification [PR41723]

    Different code paths were correctly choosing to look up D directly, since C
    is the current instantiation, but here we decided to try to make it a
    typename type, leading to confusion.  Fixed by using dependent_scope_p as
we
    do elsewhere.

    gcc/cp/ChangeLog:

            PR c++/41723
            * parser.c (cp_parser_class_name): Check dependent_scope_p.

    gcc/testsuite/ChangeLog:

            PR c++/41723
            * g++.dg/template/friend71.C: New test.

[Bug c++/41723] [9/10 Regression] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41723

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|9.4                         |9.5

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9.4 is being released, retargeting bugs to GCC 9.5.

[Bug c++/41723] [9/10 Regression] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41723

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:

https://gcc.gnu.org/g:c2e39b9e1568484192c3a4c2b4425b06e701a3fe

commit r10-10730-gc2e39b9e1568484192c3a4c2b4425b06e701a3fe
Author: Jason Merrill <jason@redhat.com>
Date:   Thu May 12 17:08:52 2022 -0400

    Revert "c++: friend with redundant qualification [PR41723]"

            PR c++/102300
            PR c++/41723

    The patch for PR41723 caused PR102300 on trunk; let's just back it out on
    the 10 branch.

    This reverts commit e41d610696b81e72d1d06db176b281424e32fc23.

    gcc/testsuite/ChangeLog:

            * g++.dg/template/nested7.C: New test.

[Bug c++/41723] [9/10 Regression] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41723

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED
   Target Milestone|9.5                         |11.0

--- Comment #11 from Jason Merrill <jason at gcc dot gnu.org> ---
So, no longer trying to fix this in 9/10.