public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug c++/98832] New: CTAD fails for alias template of aggregate with specified undeducible template parameter
@ 2021-01-26 4:46 johelegp at gmail dot com
2021-06-24 14:18 ` [Bug c++/98832] " ppalka at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: johelegp at gmail dot com @ 2021-01-26 4:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98832
Bug ID: 98832
Summary: CTAD fails for alias template of aggregate with
specified undeducible template parameter
Product: gcc
Version: 11.0
URL: https://godbolt.org/z/M1eqvq
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: johelegp at gmail dot com
CC: johelegp at gmail dot com
Target Milestone: ---
See https://godbolt.org/z/M1eqvq.
```C++
template<class T,class U>struct X{U u;};
template<class T>using Y=X<int,T>;
Y y{0};
```
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/98832] CTAD fails for alias template of aggregate with specified undeducible template parameter
2021-01-26 4:46 [Bug c++/98832] New: CTAD fails for alias template of aggregate with specified undeducible template parameter johelegp at gmail dot com
@ 2021-06-24 14:18 ` ppalka at gcc dot gnu.org
2021-06-24 17:13 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: ppalka at gcc dot gnu.org @ 2021-06-24 14:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98832
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ppalka at gcc dot gnu.org
Ever confirmed|0 |1
Assignee|unassigned at gcc dot gnu.org |ppalka at gcc dot gnu.org
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2021-06-24
--- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Confirmed. It looks like we're overlooking the aggregate deduction candidate
for the underlying template when building the set of guides for the alias.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/98832] CTAD fails for alias template of aggregate with specified undeducible template parameter
2021-01-26 4:46 [Bug c++/98832] New: CTAD fails for alias template of aggregate with specified undeducible template parameter johelegp at gmail dot com
2021-06-24 14:18 ` [Bug c++/98832] " ppalka at gcc dot gnu.org
@ 2021-06-24 17:13 ` cvs-commit at gcc dot gnu.org
2021-07-13 14:03 ` cvs-commit at gcc dot gnu.org
2021-07-13 14:07 ` ppalka at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-06-24 17:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98832
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Patrick Palka <ppalka@gcc.gnu.org>:
https://gcc.gnu.org/g:c761be53f6b62e22ac5de18c4aaf88648f64f5b7
commit r12-1793-gc761be53f6b62e22ac5de18c4aaf88648f64f5b7
Author: Patrick Palka <ppalka@redhat.com>
Date: Thu Jun 24 13:11:44 2021 -0400
c++: alias CTAD and aggregate deduction cand [PR98832]
During alias CTAD, we're accidentally ignoring the aggregate deduction
candidate for the underlying template because this guide is added
separately via maybe_aggr_guide (which doesn't yet handle alias
templates) instead of via deduction_guides_for (which does). This patch
makes maybe_aggr_guide handle alias templates in a manner similar to
deduction_guides_for.
PR c++/98832
gcc/cp/ChangeLog:
* pt.c (maybe_aggr_guide): Handle alias templates appropriately.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/class-deduction-alias9.C: New test.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/98832] CTAD fails for alias template of aggregate with specified undeducible template parameter
2021-01-26 4:46 [Bug c++/98832] New: CTAD fails for alias template of aggregate with specified undeducible template parameter johelegp at gmail dot com
2021-06-24 14:18 ` [Bug c++/98832] " ppalka at gcc dot gnu.org
2021-06-24 17:13 ` cvs-commit at gcc dot gnu.org
@ 2021-07-13 14:03 ` cvs-commit at gcc dot gnu.org
2021-07-13 14:07 ` ppalka at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-07-13 14:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98832
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Patrick Palka
<ppalka@gcc.gnu.org>:
https://gcc.gnu.org/g:660cbbae327fbfa315e26d286b03efffc3c21cb5
commit r11-8730-g660cbbae327fbfa315e26d286b03efffc3c21cb5
Author: Patrick Palka <ppalka@redhat.com>
Date: Thu Jun 24 13:11:44 2021 -0400
c++: alias CTAD and aggregate deduction cand [PR98832]
During alias CTAD, we're accidentally ignoring the aggregate deduction
candidate for the underlying template because this guide is added
separately via maybe_aggr_guide (which doesn't yet handle alias
templates) instead of via deduction_guides_for (which does). This patch
makes maybe_aggr_guide handle alias templates in a manner similar to
deduction_guides_for.
PR c++/98832
gcc/cp/ChangeLog:
* pt.c (maybe_aggr_guide): Handle alias templates appropriately.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/class-deduction-alias9.C: New test.
(cherry picked from commit c761be53f6b62e22ac5de18c4aaf88648f64f5b7)
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/98832] CTAD fails for alias template of aggregate with specified undeducible template parameter
2021-01-26 4:46 [Bug c++/98832] New: CTAD fails for alias template of aggregate with specified undeducible template parameter johelegp at gmail dot com
` (2 preceding siblings ...)
2021-07-13 14:03 ` cvs-commit at gcc dot gnu.org
@ 2021-07-13 14:07 ` ppalka at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: ppalka at gcc dot gnu.org @ 2021-07-13 14:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98832
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |11.2
--- Comment #4 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Fixed for 11.2/12
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-07-13 14:07 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-26 4:46 [Bug c++/98832] New: CTAD fails for alias template of aggregate with specified undeducible template parameter johelegp at gmail dot com
2021-06-24 14:18 ` [Bug c++/98832] " ppalka at gcc dot gnu.org
2021-06-24 17:13 ` cvs-commit at gcc dot gnu.org
2021-07-13 14:03 ` cvs-commit at gcc dot gnu.org
2021-07-13 14:07 ` ppalka at gcc dot gnu.org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).