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* [Bug c++/103539] New: [C++23] P2324 - Labels at the end of compound statements
@ 2021-12-03 14:04 mpolacek at gcc dot gnu.org
2021-12-03 14:05 ` [Bug c++/103539] " mpolacek at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2021-12-03 14:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103539
Bug ID: 103539
Summary: [C++23] P2324 - Labels at the end of compound
statements
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
Target Milestone: ---
https://wg21.link/P2324
void foo(void)
{
first: // #1 allowed in C++, now also allowed in C
int x;
second: // #2 allowed in both C++ and C
x = 1;
last: // #3 not allowed in C++, but now allowed in C
}
This proposal makes #3 OK.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/103539] [C++23] P2324 - Labels at the end of compound statements
2021-12-03 14:04 [Bug c++/103539] New: [C++23] P2324 - Labels at the end of compound statements mpolacek at gcc dot gnu.org
@ 2021-12-03 14:05 ` mpolacek at gcc dot gnu.org
2022-05-09 19:57 ` cvs-commit at gcc dot gnu.org
2022-05-09 20:02 ` mpolacek at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2021-12-03 14:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103539
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |98940
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2021-12-03
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98940
[Bug 98940] Implement C++23 language features
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/103539] [C++23] P2324 - Labels at the end of compound statements
2021-12-03 14:04 [Bug c++/103539] New: [C++23] P2324 - Labels at the end of compound statements mpolacek at gcc dot gnu.org
2021-12-03 14:05 ` [Bug c++/103539] " mpolacek at gcc dot gnu.org
@ 2022-05-09 19:57 ` cvs-commit at gcc dot gnu.org
2022-05-09 20:02 ` mpolacek at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-05-09 19:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103539
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Marek Polacek <mpolacek@gcc.gnu.org>:
https://gcc.gnu.org/g:4b2a6628644b2ce15d877c1e85d14e314965a296
commit r13-217-g4b2a6628644b2ce15d877c1e85d14e314965a296
Author: Marek Polacek <polacek@redhat.com>
Date: Sun May 8 17:36:34 2022 -0400
c++: Implement P2324R2, labels at the end of compound-stmts [PR103539]
This patch implements C++23 <https://wg21.link/p2324r2>, which allows
labels at the end of a compound statement. Its C FE counterpart was
already implemented in r11-4813.
In cp_parser_statement I rely on in_compound to determine whether we're
in a compound-statement, so that the patch doesn't accidentally allow
void fn(int c) {
if (c)
label:
}
Strangely, in_compound was reset after seeing a label (this is tested in
c-c++-common/gomp/pr63326.c), so I've made a modifiable copy specific
for OpenMP #pragma purposes.
PR c++/103539
gcc/cp/ChangeLog:
* parser.cc (cp_parser_statement): Constify the in_compound
parameter.
Create a modifiable copy. Allow labels at the end of compound
statements.
gcc/testsuite/ChangeLog:
* g++.dg/cpp23/label1.C: New test.
* g++.dg/cpp23/label2.C: New test.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/103539] [C++23] P2324 - Labels at the end of compound statements
2021-12-03 14:04 [Bug c++/103539] New: [C++23] P2324 - Labels at the end of compound statements mpolacek at gcc dot gnu.org
2021-12-03 14:05 ` [Bug c++/103539] " mpolacek at gcc dot gnu.org
2022-05-09 19:57 ` cvs-commit at gcc dot gnu.org
@ 2022-05-09 20:02 ` mpolacek at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2022-05-09 20:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103539
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Implemented in GCC 13.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2021-12-03 14:04 [Bug c++/103539] New: [C++23] P2324 - Labels at the end of compound statements mpolacek at gcc dot gnu.org
2021-12-03 14:05 ` [Bug c++/103539] " mpolacek at gcc dot gnu.org
2022-05-09 19:57 ` cvs-commit at gcc dot gnu.org
2022-05-09 20:02 ` mpolacek at gcc dot gnu.org
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