* [Bug c++/98440] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
@ 2020-12-27 20:16 ` redi at gcc dot gnu.org
2020-12-27 20:19 ` [Bug c++/98440] [9/10/11 Regression] " redi at gcc dot gnu.org
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From: redi at gcc dot gnu.org @ 2020-12-27 20:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98440
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2020-12-27
Status|UNCONFIRMED |NEW
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* [Bug c++/98440] [9/10/11 Regression] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
2020-12-27 20:16 ` [Bug c++/98440] " redi at gcc dot gnu.org
@ 2020-12-27 20:19 ` redi at gcc dot gnu.org
2021-01-14 11:14 ` rguenth at gcc dot gnu.org
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From: redi at gcc dot gnu.org @ 2020-12-27 20:19 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98440
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |10.1.0, 11.0, 9.2.0
Target Milestone|--- |9.4
Summary|Accepts ill-formed |[9/10/11 Regression]
|reinterpret_cast<int&&>(1) |Accepts ill-formed
| |reinterpret_cast<int&&>(1)
CC| |jason at gcc dot gnu.org
Known to work| |8.3.0
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This was correctly rejected until r260622:
Fix cast to rvalue reference from prvalue.
* cvt.c (diagnose_ref_binding): Handle rvalue reference.
* rtti.c (build_dynamic_cast_1): Don't try to build a reference to
non-class type. Handle xvalue argument.
* typeck.c (build_reinterpret_cast_1): Allow cast from prvalue to
rvalue reference.
* semantics.c (finish_compound_literal): Do direct-initialization,
not cast, to initialize a reference.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/98440] [9/10/11 Regression] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
2020-12-27 20:16 ` [Bug c++/98440] " redi at gcc dot gnu.org
2020-12-27 20:19 ` [Bug c++/98440] [9/10/11 Regression] " redi at gcc dot gnu.org
@ 2021-01-14 11:14 ` rguenth at gcc dot gnu.org
2021-04-05 19:46 ` jason at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2021-01-14 11:14 UTC (permalink / raw)
To: gcc-bugs
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
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* [Bug c++/98440] [9/10/11 Regression] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
` (2 preceding siblings ...)
2021-01-14 11:14 ` rguenth at gcc dot gnu.org
@ 2021-04-05 19:46 ` jason at gcc dot gnu.org
2021-04-05 21:27 ` cvs-commit at gcc dot gnu.org
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From: jason at gcc dot gnu.org @ 2021-04-05 19:46 UTC (permalink / raw)
To: gcc-bugs
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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
Status|NEW |ASSIGNED
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* [Bug c++/98440] [9/10/11 Regression] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
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2021-04-05 19:46 ` jason at gcc dot gnu.org
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2021-04-05 21:30 ` [Bug c++/98440] [9/10 " jason at gcc dot gnu.org
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From: cvs-commit at gcc dot gnu.org @ 2021-04-05 21:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98440
--- Comment #2 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:07f56824fd4da14a48030e698c8eb58de951c741
commit r11-7994-g07f56824fd4da14a48030e698c8eb58de951c741
Author: Jason Merrill <jason@redhat.com>
Date: Mon Apr 5 15:50:48 2021 -0400
c++: reinterpret_cast from prvalue to rvalue ref [PR98440]
In r260622 I allowed this under the general principle that [basic.lval]
"Whenever a prvalue appears as an operand of an operator that expects a
glvalue for that operand, the temporary materialization conversion (7.3.4)
is applied to convert the expression to an xvalue." But
[expr.reinterpret.cast] specifically excludes creating a temporary in this
case.
gcc/cp/ChangeLog:
PR c++/98440
* typeck.c (build_reinterpret_cast_1): Don't perform
temporary materialization.
gcc/testsuite/ChangeLog:
* g++.dg/cpp0x/rv-cast6.C: Expect reinterpret_cast error.
* g++.dg/cpp0x/reinterpret_cast2.C: Adjust message.
* g++.old-deja/g++.jason/rvalue3.C: Likewise.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/98440] [9/10 Regression] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
` (4 preceding siblings ...)
2021-04-05 21:27 ` cvs-commit at gcc dot gnu.org
@ 2021-04-05 21:30 ` jason at gcc dot gnu.org
2021-06-01 8:19 ` rguenth at gcc dot gnu.org
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From: jason at gcc dot gnu.org @ 2021-04-05 21:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98440
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[9/10/11 Regression] |[9/10 Regression] Accepts
|Accepts ill-formed |ill-formed
|reinterpret_cast<int&&>(1) |reinterpret_cast<int&&>(1)
Known to fail|11.0 |
Known to work| |11.0
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 11 so far.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/98440] [9/10 Regression] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
` (5 preceding siblings ...)
2021-04-05 21:30 ` [Bug c++/98440] [9/10 " jason at gcc dot gnu.org
@ 2021-06-01 8:19 ` rguenth at gcc dot gnu.org
2021-07-27 22:22 ` pinskia at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2021-06-01 8:19 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98440
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.4 |9.5
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9.4 is being released, retargeting bugs to GCC 9.5.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/98440] [9/10 Regression] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
` (6 preceding siblings ...)
2021-06-01 8:19 ` rguenth at gcc dot gnu.org
@ 2021-07-27 22:22 ` pinskia at gcc dot gnu.org
2022-05-27 9:44 ` [Bug c++/98440] [10 " rguenth at gcc dot gnu.org
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From: pinskia at gcc dot gnu.org @ 2021-07-27 22:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98440
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |zhonghao at pku dot org.cn
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 86633 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/98440] [10 Regression] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
` (7 preceding siblings ...)
2021-07-27 22:22 ` pinskia at gcc dot gnu.org
@ 2022-05-27 9:44 ` rguenth at gcc dot gnu.org
2022-06-28 10:42 ` jakub at gcc dot gnu.org
2023-07-07 9:20 ` rguenth at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2022-05-27 9:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98440
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.5 |10.4
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9 branch is being closed
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/98440] [10 Regression] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
` (8 preceding siblings ...)
2022-05-27 9:44 ` [Bug c++/98440] [10 " rguenth at gcc dot gnu.org
@ 2022-06-28 10:42 ` jakub at gcc dot gnu.org
2023-07-07 9:20 ` rguenth at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2022-06-28 10:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98440
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.4 |10.5
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 10.4 is being released, retargeting bugs to GCC 10.5.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/98440] [10 Regression] Accepts ill-formed reinterpret_cast<int&&>(1)
2020-12-24 21:38 [Bug c++/98440] New: Accepts ill-formed reinterpret_cast<int&&>(1) aschepler at gmail dot com
` (9 preceding siblings ...)
2022-06-28 10:42 ` jakub at gcc dot gnu.org
@ 2023-07-07 9:20 ` rguenth at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2023-07-07 9:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98440
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|10.5 |11.0
Known to fail| |10.5.0
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed in GCC 11.
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