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* [Bug c++/97839] New: Template lambda incorrectly requiring the optional lambda-declarator
@ 2020-11-15 15:11 gareth@ignition-web.co.uk
2020-11-17 15:44 ` [Bug c++/97839] " mpolacek at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: gareth@ignition-web.co.uk @ 2020-11-15 15:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97839
Bug ID: 97839
Summary: Template lambda incorrectly requiring the optional
lambda-declarator
Product: gcc
Version: 10.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gareth@ignition-web.co.uk
Target Milestone: ---
int main()
{
[]<typename T>{}.operator()<int>();
}
https://godbolt.org/z/eo4ebr
http://eel.is/c++draft/expr.prim.lambda.general#nt:lambda-expression
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/97839] Template lambda incorrectly requiring the optional lambda-declarator
2020-11-15 15:11 [Bug c++/97839] New: Template lambda incorrectly requiring the optional lambda-declarator gareth@ignition-web.co.uk
@ 2020-11-17 15:44 ` mpolacek at gcc dot gnu.org
2020-11-17 16:01 ` mpolacek at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2020-11-17 15:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97839
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
CC| |mpolacek at gcc dot gnu.org
Status|UNCONFIRMED |NEW
Last reconfirmed| |2020-11-17
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed, thanks for reporting it.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/97839] Template lambda incorrectly requiring the optional lambda-declarator
2020-11-15 15:11 [Bug c++/97839] New: Template lambda incorrectly requiring the optional lambda-declarator gareth@ignition-web.co.uk
2020-11-17 15:44 ` [Bug c++/97839] " mpolacek at gcc dot gnu.org
@ 2020-11-17 16:01 ` mpolacek at gcc dot gnu.org
2020-11-21 20:36 ` cvs-commit at gcc dot gnu.org
2020-11-21 20:50 ` mpolacek at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2020-11-17 16:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97839
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/97839] Template lambda incorrectly requiring the optional lambda-declarator
2020-11-15 15:11 [Bug c++/97839] New: Template lambda incorrectly requiring the optional lambda-declarator gareth@ignition-web.co.uk
2020-11-17 15:44 ` [Bug c++/97839] " mpolacek at gcc dot gnu.org
2020-11-17 16:01 ` mpolacek at gcc dot gnu.org
@ 2020-11-21 20:36 ` cvs-commit at gcc dot gnu.org
2020-11-21 20:50 ` mpolacek at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-11-21 20:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97839
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Marek Polacek <mpolacek@gcc.gnu.org>:
https://gcc.gnu.org/g:78cd6a63ee67ed854fbe54dd7c0a500dc138459a
commit r11-5230-g78cd6a63ee67ed854fbe54dd7c0a500dc138459a
Author: Marek Polacek <polacek@redhat.com>
Date: Tue Nov 17 11:38:25 2020 -0500
c++: Allow template lambdas without lambda-declarator [PR97839]
Our implementation of template lambdas incorrectly requires the optional
lambda-declarator. This was probably required by an early draft of
generic lambdas, but now the production is [expr.prim.lambda.general]:
lambda-expression:
lambda-introducer lambda-declarator [opt] compound-statement
lambda-introducer < template-parameter-list > requires-clause [opt]
lambda-declarator [opt] compound-statement
Therefore, we should accept the following test.
gcc/cp/ChangeLog:
PR c++/97839
* parser.c (cp_parser_lambda_declarator_opt): Don't require ().
gcc/testsuite/ChangeLog:
PR c++/97839
* g++.dg/cpp2a/lambda-generic8.C: New test.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/97839] Template lambda incorrectly requiring the optional lambda-declarator
2020-11-15 15:11 [Bug c++/97839] New: Template lambda incorrectly requiring the optional lambda-declarator gareth@ignition-web.co.uk
` (2 preceding siblings ...)
2020-11-21 20:36 ` cvs-commit at gcc dot gnu.org
@ 2020-11-21 20:50 ` mpolacek at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2020-11-21 20:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97839
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2020-11-15 15:11 [Bug c++/97839] New: Template lambda incorrectly requiring the optional lambda-declarator gareth@ignition-web.co.uk
2020-11-17 15:44 ` [Bug c++/97839] " mpolacek at gcc dot gnu.org
2020-11-17 16:01 ` mpolacek at gcc dot gnu.org
2020-11-21 20:36 ` cvs-commit at gcc dot gnu.org
2020-11-21 20:50 ` mpolacek at gcc dot gnu.org
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