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* [Bug libstdc++/105269] New: missing some library feature test macros in c++20 and c++23
@ 2022-04-14 1:44 cooky.ykooc922 at gmail dot com
2022-04-14 9:18 ` [Bug libstdc++/105269] " redi at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: cooky.ykooc922 at gmail dot com @ 2022-04-14 1:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105269
Bug ID: 105269
Summary: missing some library feature test macros in c++20 and
c++23
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: cooky.ykooc922 at gmail dot com
Target Milestone: ---
Given the code:
#include <version>
#ifndef __cpp_lib_constexpr_vector
# warning "__cpp_lib_constexpr_vector is not defined"
#endif
#ifndef __cpp_lib_stdatomic_h
# warning "__cpp_lib_stdatomic_h is not defined"
#endif
#ifdef __cpp_lib_monadic_optional
# warning "__cpp_lib_monadic_optional shouldn't be defined since LWG3621"
# if __cpp_lib_optional != 202110L
# warning "__cpp_lib_optional value should be adjusted to 202110L since
LWG3621"
# endif
#endif
all warnings are emitted:
<source>:4:5: warning: #warning "__cpp_lib_constexpr_vector is not defined"
[-Wcpp]
4 | # warning "__cpp_lib_constexpr_vector is not defined"
| ^~~~~~~
<source>:8:5: warning: #warning "__cpp_lib_stdatomic_h is not defined" [-Wcpp]
8 | # warning "__cpp_lib_stdatomic_h is not defined"
| ^~~~~~~
<source>:12:5: warning: #warning "__cpp_lib_monadic_optional shouldn't be
defined since LWG3621" [-Wcpp]
12 | # warning "__cpp_lib_monadic_optional shouldn't be defined since
LWG3621"
| ^~~~~~~
<source>:14:9: warning: #warning "__cpp_lib_optional value should be adjusted
to 202110L since LWG3621" [-Wcpp]
14 | # warning "__cpp_lib_optional value should be adjusted to 202110L
since LWG3621"
| ^~~~~~~
Compiler returned: 0
godbolt link: https://godbolt.org/z/Y9Wqccnv3
since:
-
https://github.com/gcc-mirror/gcc/commit/1ae8edf5f73ca5c3bf132cc52825dc1f709499dd
is committed to implementing constexpr std::vector (C++20)
-
https://github.com/gcc-mirror/gcc/commit/d7f2a09e98520c4e4927f460ad96803b05a205b1
is committed to implementing <stdatomic.h> (P0943 has __cpp_lib_stdatomic_h
provided) (C++23)
-
https://github.com/gcc-mirror/gcc/commit/82b2e4f8cf5a01c6724fe3f465a77ee03cfcaae2
is commited to implementing monadic operations (before LWG3621 is adopted)
(C++23)
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/105269] missing some library feature test macros in c++20 and c++23
2022-04-14 1:44 [Bug libstdc++/105269] New: missing some library feature test macros in c++20 and c++23 cooky.ykooc922 at gmail dot com
@ 2022-04-14 9:18 ` redi at gcc dot gnu.org
2022-04-14 10:46 ` cvs-commit at gcc dot gnu.org
2022-04-14 11:06 ` redi at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: redi at gcc dot gnu.org @ 2022-04-14 9:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105269
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Last reconfirmed| |2022-04-14
Status|UNCONFIRMED |ASSIGNED
Ever confirmed|0 |1
Target Milestone|--- |12.0
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/105269] missing some library feature test macros in c++20 and c++23
2022-04-14 1:44 [Bug libstdc++/105269] New: missing some library feature test macros in c++20 and c++23 cooky.ykooc922 at gmail dot com
2022-04-14 9:18 ` [Bug libstdc++/105269] " redi at gcc dot gnu.org
@ 2022-04-14 10:46 ` cvs-commit at gcc dot gnu.org
2022-04-14 11:06 ` redi at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-04-14 10:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105269
--- 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:d2f8208e9add01fe10ee56307cc79631b9995f74
commit r12-8154-gd2f8208e9add01fe10ee56307cc79631b9995f74
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Thu Apr 14 10:28:03 2022 +0100
libstdc++: Fix missing and incorrect feature test macros [PR105269]
libstdc++-v3/ChangeLog:
PR libstdc++/105269
* include/bits/stl_vector.h (__cpp_lib_constexpr_vector):
Define.
* include/c_compatibility/stdatomic.h (__cpp_lib_stdatomic_h):
Define.
* include/std/optional (__cpp_lib_optional): Define new value
for C++23.
(__cpp_lib_monadic_optional): Remove.
* include/std/version (__cpp_lib_constexpr_vector): Define.
(__cpp_lib_stdatomic_h): Define.
(__cpp_lib_optional): Define new value for C++23.
(__cpp_lib_monadic_optional): Remove.
* testsuite/20_util/optional/monadic/and_then.cc: Adjust.
* testsuite/20_util/optional/requirements.cc: Adjust for C++23.
* testsuite/20_util/optional/version.cc: Likewise.
* testsuite/23_containers/vector/cons/constexpr.cc: Check
feature test macro.
* testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
Likewise.
* testsuite/20_util/optional/monadic/version.cc: Removed.
* testsuite/23_containers/vector/requirements/version.cc: New test.
* testsuite/29_atomics/headers/stdatomic.h/version.cc: New test.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/105269] missing some library feature test macros in c++20 and c++23
2022-04-14 1:44 [Bug libstdc++/105269] New: missing some library feature test macros in c++20 and c++23 cooky.ykooc922 at gmail dot com
2022-04-14 9:18 ` [Bug libstdc++/105269] " redi at gcc dot gnu.org
2022-04-14 10:46 ` cvs-commit at gcc dot gnu.org
@ 2022-04-14 11:06 ` redi at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: redi at gcc dot gnu.org @ 2022-04-14 11:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105269
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed, thanks for the report.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2022-04-14 1:44 [Bug libstdc++/105269] New: missing some library feature test macros in c++20 and c++23 cooky.ykooc922 at gmail dot com
2022-04-14 9:18 ` [Bug libstdc++/105269] " redi at gcc dot gnu.org
2022-04-14 10:46 ` cvs-commit at gcc dot gnu.org
2022-04-14 11:06 ` redi at gcc dot gnu.org
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