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* [Bug libstdc++/105021] New: [11/12 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory
@ 2022-03-22 17:50 redi at gcc dot gnu.org
2022-03-22 21:21 ` [Bug libstdc++/105021] " redi at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2022-03-22 17:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105021
Bug ID: 105021
Summary: [11/12 Regression] Missing freestanding headers:
bits/atomic_base.h:41:10: fatal error:
bits/atomic_wait.h: No such file or directory
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
With -std=c++20 a simple #include <atomic> fails for a freestanding library:
In file included from /tmp/freestanding/include/c++/12.0.1/atomic:41,
from /tmp/freestanding/include/c++/12.0.1/bits/stdc++.h:4,
from <stdin>:1:
/tmp/freestanding/include/c++/12.0.1/bits/atomic_base.h:41:10: fatal error:
bits/atomic_wait.h: No such file or directory
41 | #include <bits/atomic_wait.h>
| ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
That header also needs <bits/functional_hash.h> and <bits/gthr.h> which are not
freestanding either.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug libstdc++/105021] [11/12 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory
2022-03-22 17:50 [Bug libstdc++/105021] New: [11/12 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory redi at gcc dot gnu.org
@ 2022-03-22 21:21 ` redi at gcc dot gnu.org
2022-03-23 10:11 ` cvs-commit at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2022-03-22 21:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105021
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |10.3.1
Known to fail| |11.2.1, 12.0
Last reconfirmed| |2022-03-22
Ever confirmed|0 |1
Target Milestone|--- |11.3
Status|UNCONFIRMED |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug libstdc++/105021] [11/12 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory
2022-03-22 17:50 [Bug libstdc++/105021] New: [11/12 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory redi at gcc dot gnu.org
2022-03-22 21:21 ` [Bug libstdc++/105021] " redi at gcc dot gnu.org
@ 2022-03-23 10:11 ` cvs-commit at gcc dot gnu.org
2022-03-23 10:41 ` [Bug libstdc++/105021] [11 " rguenth at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-03-23 10:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105021
--- 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:5bf59b004808abf6acbfe5ef54a0f9216b8dce22
commit r12-7778-g5bf59b004808abf6acbfe5ef54a0f9216b8dce22
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Tue Mar 22 21:17:01 2022 +0000
libstdc++: Disable atomic wait for freestanding [PR105021]
We use either condition variables or futexes to implement atomic waits,
so we can't do it in freestanding. This is non-conforming, so should be
revisited later, probably by making freestanding atomic waiting
operations spin without ever blocking.
Reviewed-by: Thomas Rodgers <trodgers@redhat.com>
libstdc++-v3/ChangeLog:
PR libstdc++/105021
* include/bits/atomic_base.h [!_GLIBCXX_HOSTED]: Do not include
<bits/atomic_wait.h> for freestanding.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug libstdc++/105021] [11 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory
2022-03-22 17:50 [Bug libstdc++/105021] New: [11/12 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory redi at gcc dot gnu.org
2022-03-22 21:21 ` [Bug libstdc++/105021] " redi at gcc dot gnu.org
2022-03-23 10:11 ` cvs-commit at gcc dot gnu.org
@ 2022-03-23 10:41 ` rguenth at gcc dot gnu.org
2022-04-12 20:18 ` cvs-commit at gcc dot gnu.org
2022-04-12 20:19 ` redi at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-03-23 10:41 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105021
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |12.0
Known to fail|12.0 |
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug libstdc++/105021] [11 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory
2022-03-22 17:50 [Bug libstdc++/105021] New: [11/12 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory redi at gcc dot gnu.org
` (2 preceding siblings ...)
2022-03-23 10:41 ` [Bug libstdc++/105021] [11 " rguenth at gcc dot gnu.org
@ 2022-04-12 20:18 ` cvs-commit at gcc dot gnu.org
2022-04-12 20:19 ` redi at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-04-12 20:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105021
--- 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:ac0e9b696c362fdd49752260ca7b3ce9e467ec36
commit r11-9834-gac0e9b696c362fdd49752260ca7b3ce9e467ec36
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Tue Mar 22 21:17:01 2022 +0000
libstdc++: Disable atomic wait for freestanding [PR105021]
We use either condition variables or futexes to implement atomic waits,
so we can't do it in freestanding. This is non-conforming, so should be
revisited later, probably by making freestanding atomic waiting
operations spin without ever blocking.
Reviewed-by: Thomas Rodgers <trodgers@redhat.com>
libstdc++-v3/ChangeLog:
PR libstdc++/105021
* include/bits/atomic_base.h [!_GLIBCXX_HOSTED]: Do not include
<bits/atomic_wait.h> for freestanding.
(cherry picked from commit 5bf59b004808abf6acbfe5ef54a0f9216b8dce22)
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug libstdc++/105021] [11 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory
2022-03-22 17:50 [Bug libstdc++/105021] New: [11/12 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory redi at gcc dot gnu.org
` (3 preceding siblings ...)
2022-04-12 20:18 ` cvs-commit at gcc dot gnu.org
@ 2022-04-12 20:19 ` redi at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2022-04-12 20:19 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105021
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] 6+ messages in thread
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2022-03-22 17:50 [Bug libstdc++/105021] New: [11/12 Regression] Missing freestanding headers: bits/atomic_base.h:41:10: fatal error: bits/atomic_wait.h: No such file or directory redi at gcc dot gnu.org
2022-03-22 21:21 ` [Bug libstdc++/105021] " redi at gcc dot gnu.org
2022-03-23 10:11 ` cvs-commit at gcc dot gnu.org
2022-03-23 10:41 ` [Bug libstdc++/105021] [11 " rguenth at gcc dot gnu.org
2022-04-12 20:18 ` cvs-commit at gcc dot gnu.org
2022-04-12 20:19 ` redi at gcc dot gnu.org
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