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* [Bug c++/105718] New: Forward Declarations of Constrained Partially Specialized Class Templates Rejected
@ 2022-05-24 13:42 mate.kelemen.12 at gmail dot com
2022-05-24 16:52 ` [Bug c++/105718] " ppalka at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: mate.kelemen.12 at gmail dot com @ 2022-05-24 13:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105718
Bug ID: 105718
Summary: Forward Declarations of Constrained Partially
Specialized Class Templates Rejected
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mate.kelemen.12 at gmail dot com
Target Milestone: ---
Created attachment 53029
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53029&action=edit
Preprocessed source run with: g++ -v --save-temps -std=c++20.
Multiple forward declarations of partially specialized class templates with
constraints (C++20 concepts) get rejected at the second declaration. Equivalent
code with explicit specializations compiles without issues. See the
[example](https://godbolt.org/z/1hd8Y6Ghh) on godbolt (Clang and MSVC don't
reject it). Source and preprocessed file in the attachments.
This issue seems to be a duplicate of #99501 from 03.2021, which hasn't gotten
any attention yet.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/105718] Forward Declarations of Constrained Partially Specialized Class Templates Rejected
2022-05-24 13:42 [Bug c++/105718] New: Forward Declarations of Constrained Partially Specialized Class Templates Rejected mate.kelemen.12 at gmail dot com
@ 2022-05-24 16:52 ` ppalka at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: ppalka at gcc dot gnu.org @ 2022-05-24 16:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105718
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ppalka at gcc dot gnu.org
Resolution|--- |DUPLICATE
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Thanks for the bug report. I think this (and PR99501) is ultimately a
duplicate of the earlier PR96363.
*** This bug has been marked as a duplicate of bug 96363 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-05-24 13:42 [Bug c++/105718] New: Forward Declarations of Constrained Partially Specialized Class Templates Rejected mate.kelemen.12 at gmail dot com
2022-05-24 16:52 ` [Bug c++/105718] " ppalka at gcc dot gnu.org
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