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* [Bug libstdc++/104542] New: make_obj_using_allocator and uninitialized_construct_using_allocator lack constexpr
@ 2022-02-15 6:36 de34 at live dot cn
2022-02-15 9:52 ` [Bug libstdc++/104542] " redi at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: de34 at live dot cn @ 2022-02-15 6:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104542
Bug ID: 104542
Summary: make_obj_using_allocator and
uninitialized_construct_using_allocator lack constexpr
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: de34 at live dot cn
Target Milestone: ---
std::make_obj_using_allocator and std::uninitialized_construct_using_allocator
are constexpr in C++20 (LWG3185, LWG3321), but currently they are not constexpr
in libstdc++.
I think the related compiler support for std::construct_at is available since
gcc11 (partially available in gcc10), so these functions are reasonably
constexpr in libstdc++ now, and this fix should be backported to gcc 10/11.
wandbox links:
gcc10 with manual constexpr (lacks support for CZ044):
https://wandbox.org/permlink/CvSEindXZa3MMRT5
gcc11&12 with manual constexpr:
https://wandbox.org/permlink/8i7oM16jGxlmz3FC
https://wandbox.org/permlink/VHQJhGINcdpNC0Eh
gcc11&12 with std versions, currently doesn't compile:
https://wandbox.org/permlink/ZUx1xZIOphwxcJhS
https://wandbox.org/permlink/f8uujdEoMUPbsUIq
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/104542] make_obj_using_allocator and uninitialized_construct_using_allocator lack constexpr
2022-02-15 6:36 [Bug libstdc++/104542] New: make_obj_using_allocator and uninitialized_construct_using_allocator lack constexpr de34 at live dot cn
@ 2022-02-15 9:52 ` redi at gcc dot gnu.org
2022-02-15 14:28 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2022-02-15 9:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104542
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |11.3
Last reconfirmed| |2022-02-15
Ever confirmed|0 |1
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Status|UNCONFIRMED |ASSIGNED
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/104542] make_obj_using_allocator and uninitialized_construct_using_allocator lack constexpr
2022-02-15 6:36 [Bug libstdc++/104542] New: make_obj_using_allocator and uninitialized_construct_using_allocator lack constexpr de34 at live dot cn
2022-02-15 9:52 ` [Bug libstdc++/104542] " redi at gcc dot gnu.org
@ 2022-02-15 14:28 ` cvs-commit at gcc dot gnu.org
2022-04-04 11:46 ` cvs-commit at gcc dot gnu.org
2022-04-04 21:22 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-02-15 14:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104542
--- Comment #1 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:6cfb7ffb659fd6b87a21312021ab023a06e8f6be
commit r12-7244-g6cfb7ffb659fd6b87a21312021ab023a06e8f6be
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Tue Feb 15 12:47:39 2022 +0000
libstdc++: Add missing constexpr to uses-allocator construction utilities
[PR104542]
libstdc++-v3/ChangeLog:
PR libstdc++/104542
* include/bits/uses_allocator_args.h (make_obj_using_allocator)
(uninitialized_construct_using_allocator): Add constexpr.
* testsuite/20_util/uses_allocator/make_obj.cc: Check constexpr.
* testsuite/20_util/uses_allocator/uninitialized_construct.cc: New
test.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/104542] make_obj_using_allocator and uninitialized_construct_using_allocator lack constexpr
2022-02-15 6:36 [Bug libstdc++/104542] New: make_obj_using_allocator and uninitialized_construct_using_allocator lack constexpr de34 at live dot cn
2022-02-15 9:52 ` [Bug libstdc++/104542] " redi at gcc dot gnu.org
2022-02-15 14:28 ` cvs-commit at gcc dot gnu.org
@ 2022-04-04 11:46 ` cvs-commit at gcc dot gnu.org
2022-04-04 21:22 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-04-04 11:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104542
--- Comment #2 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:fe76adc667b4e521705540b30b68ab988c6abbec
commit r11-9760-gfe76adc667b4e521705540b30b68ab988c6abbec
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Tue Feb 15 12:47:39 2022 +0000
libstdc++: Add missing constexpr to uses-allocator construction utilities
[PR104542]
libstdc++-v3/ChangeLog:
PR libstdc++/104542
* include/bits/uses_allocator_args.h (make_obj_using_allocator)
(uninitialized_construct_using_allocator): Add constexpr.
* testsuite/20_util/uses_allocator/make_obj.cc: Check constexpr.
* testsuite/20_util/uses_allocator/uninitialized_construct.cc: New
test.
(cherry picked from commit 6cfb7ffb659fd6b87a21312021ab023a06e8f6be)
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/104542] make_obj_using_allocator and uninitialized_construct_using_allocator lack constexpr
2022-02-15 6:36 [Bug libstdc++/104542] New: make_obj_using_allocator and uninitialized_construct_using_allocator lack constexpr de34 at live dot cn
` (2 preceding siblings ...)
2022-04-04 11:46 ` cvs-commit at gcc dot gnu.org
@ 2022-04-04 21:22 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2022-04-04 21:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104542
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for 11.3
^ permalink raw reply [flat|nested] 5+ messages in thread
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2022-02-15 6:36 [Bug libstdc++/104542] New: make_obj_using_allocator and uninitialized_construct_using_allocator lack constexpr de34 at live dot cn
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