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* [Bug c++/114519] New: GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20
@ 2024-03-28 15:20 janisozaur+gcc at gmail dot com
2024-03-28 15:26 ` [Bug libstdc++/114519] " pinskia at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: janisozaur+gcc at gmail dot com @ 2024-03-28 15:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114519
Bug ID: 114519
Summary: GCC 14 trunk fails to compile chrono with -fno-char8_t
-std=gnu++20
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: janisozaur+gcc at gmail dot com
Target Milestone: ---
Created attachment 57830
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57830&action=edit
failure log gcc 20240328
Godbolt link:
https://godbolt.org/z/e8GG8znTh
test.cpp:
#include <chrono>
Compilation:
g++ -std=gnu++20 -fno-char8_t
Version:
/home/mijn/workspace/gcc-install-master/bin/g++ --version
g++ (GCC) 14.0.1 20240328 (experimental)
Copyright (C) 2024 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Expected result:
compiles without issues. It compiles correctly with GCC 13
Result:
Full output in the attachment, only the last line quoted below:
/opt/compiler-explorer/gcc-trunk-20240328/include/c++/14.0.1/format:707:58:
error: 'consteval bool std::__unicode::__literal_encoding_is_unicode() [with
_CharT = char]' called in a constant expression
707 | if constexpr (__literal_encoding_is_unicode<_CharT>())
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
Compiler returned: 1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/114519] GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20
2024-03-28 15:20 [Bug c++/114519] New: GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20 janisozaur+gcc at gmail dot com
@ 2024-03-28 15:26 ` pinskia at gcc dot gnu.org
2024-03-28 21:31 ` redi at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-03-28 15:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114519
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |libstdc++
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Why are you using fno-char8_t? It turns off features of c++ that the standard
library requires.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/114519] GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20
2024-03-28 15:20 [Bug c++/114519] New: GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20 janisozaur+gcc at gmail dot com
2024-03-28 15:26 ` [Bug libstdc++/114519] " pinskia at gcc dot gnu.org
@ 2024-03-28 21:31 ` redi at gcc dot gnu.org
2024-04-02 20:12 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2024-03-28 21:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114519
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2024-03-28
Target Milestone|--- |14.0
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Status|UNCONFIRMED |ASSIGNED
Ever confirmed|0 |1
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The library doesn't require it, and can cope with -fno-char8_t
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/114519] GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20
2024-03-28 15:20 [Bug c++/114519] New: GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20 janisozaur+gcc at gmail dot com
2024-03-28 15:26 ` [Bug libstdc++/114519] " pinskia at gcc dot gnu.org
2024-03-28 21:31 ` redi at gcc dot gnu.org
@ 2024-04-02 20:12 ` cvs-commit at gcc dot gnu.org
2024-04-02 20:13 ` [Bug libstdc++/114519] [14 Regression] " redi at gcc dot gnu.org
2024-04-08 16:45 ` cvs-commit at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2024-04-02 20:12 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114519
--- Comment #3 from GCC 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:21aa57e73b820395b7b01843d61ef5b84cd20d02
commit r14-9761-g21aa57e73b820395b7b01843d61ef5b84cd20d02
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Thu Mar 28 21:29:17 2024 +0000
libstdc++: Guard uses of char8_t with __cpp_char8_t [PR114519]
libstdc++-v3/ChangeLog:
PR libstdc++/114519
* include/bits/unicode.h (_Utf8_view): Guard with check for
char8_t being enabled.
(__literal_encoding_is_unicode): Guard use of char8_t with check
for it being enabled.
* testsuite/std/format/functions/114519.cc: New test.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/114519] [14 Regression] GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20
2024-03-28 15:20 [Bug c++/114519] New: GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20 janisozaur+gcc at gmail dot com
` (2 preceding siblings ...)
2024-04-02 20:12 ` cvs-commit at gcc dot gnu.org
@ 2024-04-02 20:13 ` redi at gcc dot gnu.org
2024-04-08 16:45 ` cvs-commit at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2024-04-02 20:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114519
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
Known to work| |13.2.0
Known to fail| |14.0
Summary|GCC 14 trunk fails to |[14 Regression] GCC 14
|compile chrono with |trunk fails to compile
|-fno-char8_t -std=gnu++20 |chrono with -fno-char8_t
| |-std=gnu++20
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed, thanks for the report.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/114519] [14 Regression] GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20
2024-03-28 15:20 [Bug c++/114519] New: GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20 janisozaur+gcc at gmail dot com
` (3 preceding siblings ...)
2024-04-02 20:13 ` [Bug libstdc++/114519] [14 Regression] " redi at gcc dot gnu.org
@ 2024-04-08 16:45 ` cvs-commit at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2024-04-08 16:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114519
--- Comment #5 from GCC 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:feb6a2d3569095706170c9400e93add27a66e034
commit r14-9839-gfeb6a2d3569095706170c9400e93add27a66e034
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Tue Apr 2 22:46:55 2024 +0100
libstdc++: Use char for _Utf8_view if char8_t isn't available [PR114519]
Instead of just omitting the definition of __unicode::_Utf8_view when
char8_t is disabled, we can make it use char instead.
libstdc++-v3/ChangeLog:
PR libstdc++/114519
* include/bits/unicode.h (_Utf8_view) [!__cpp_char8_t]: Define
using char instead of char8_t.
* testsuite/ext/unicode/view.cc: Use u8""sv literals to create
string views, instead of std::u8string_view.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2024-04-08 16:45 UTC | newest]
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2024-03-28 15:20 [Bug c++/114519] New: GCC 14 trunk fails to compile chrono with -fno-char8_t -std=gnu++20 janisozaur+gcc at gmail dot com
2024-03-28 15:26 ` [Bug libstdc++/114519] " pinskia at gcc dot gnu.org
2024-03-28 21:31 ` redi at gcc dot gnu.org
2024-04-02 20:12 ` cvs-commit at gcc dot gnu.org
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