[Bug c++/46159] New: [4.5/4.6 Regression] Bogus warning about lambdas

[Bug c++/46159] New: [4.5/4.6 Regression] Bogus warning about lambdas

[jsm28 at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46159

           Summary: [4.5/4.6 Regression] Bogus warning about lambdas
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Keywords: rejects-valid
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jsm28@gcc.gnu.org


The following C++ code

void
f()
{
  int **p = new(int(*[2]));
}

gets what seems to be a bogus diagnostic from 4.5 and 4.6:

t.C: In function 'void f()':
t.C:4:21: warning: lambda expressions only available with -std=c++0x or
-std=gnu++0x [enabled by default]

As far as I know this is valid C++98/C++03 code, not involving a lambda.  4.4
accepts it with no diagnostic.

[Bug c++/46159] [4.5/4.6 Regression] Bogus warning about lambdas

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46159

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2010.10.27 21:02:56
   Target Milestone|---                         |4.5.2
     Ever Confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2010-10-27 21:02:56 UTC ---
Confirmed.  Looks like there might be some ambiguous in the parsing with
lambda's.

[Bug c++/46159] [4.5/4.6 Regression] Bogus warning about lambdas

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46159

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2

[Bug c++/46159] [4.5/4.6 Regression] Bogus warning about lambdas

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46159

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.5.2                       |4.5.3

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-12-16 13:03:23 UTC ---
GCC 4.5.2 is being released, adjusting target milestone.

[Bug c++/46159] [4.5/4.6 Regression] Bogus warning about lambdas

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46159

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |schaub.johannes at
                   |                            |googlemail dot com

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-02-08 22:31:12 UTC ---
*** Bug 47651 has been marked as a duplicate of this bug. ***

[Bug c++/46159] [4.5/4.6 Regression] Bogus warning about lambdas

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46159

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

[Bug c++/46159] [4.5/4.6 Regression] Bogus warning about lambdas

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46159

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-03-02 18:18:48 UTC ---
Author: jason
Date: Wed Mar  2 18:18:41 2011
New Revision: 170621

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170621
Log:
    PR c++/46159
    * parser.c (cp_parser_primary_expression): Don't warn about a
    failed tentative parse.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-98.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/parser.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/46159] [4.5 Regression] Bogus warning about lambdas

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46159

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.6.0
         AssignedTo|unassigned at gcc dot       |jason at gcc dot gnu.org
                   |gnu.org                     |
            Summary|[4.5/4.6 Regression] Bogus  |[4.5 Regression] Bogus
                   |warning about lambdas       |warning about lambdas
      Known to fail|                            |4.5.2

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-02 18:22:45 UTC ---
Fixed on the trunk so far.

[Bug c++/46159] [4.5 Regression] Bogus warning about lambdas

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46159

--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> 2011-03-02 18:46:04 UTC ---
Author: jason
Date: Wed Mar  2 18:46:01 2011
New Revision: 170622

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170622
Log:
    PR c++/46159
    * parser.c (cp_parser_primary_expression): Don't warn about a
    failed tentative parse.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-98.C
Modified:
    branches/gcc-4_5-branch/gcc/cp/ChangeLog
    branches/gcc-4_5-branch/gcc/cp/parser.c
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog

[Bug c++/46159] [4.5 Regression] Bogus warning about lambdas

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46159

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> 2011-03-02 18:48:04 UTC ---
Fixed in 4.5 as well.