[Bug c++/50736] New: ISO_IEC_14882-2011-5.1.2/10 - bug

[Bug c++/50736] New: ISO_IEC_14882-2011-5.1.2/10 - bug

[i.nixman at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50736

             Bug #: 50736
           Summary: ISO_IEC_14882-2011-5.1.2/10 - bug
    Classification: Unclassified
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: i.nixman@gmail.com


Quote from ISO_IEC_14882-2011, 5.1.2/10:
> The identifiers in a capture-list are looked up using 
> the usual rules for unqualified name lookup (3.4.1); each
> such lookup shall find a variable with automatic 
> storage duration declared in the reaching scope of the local
> lambda expression. An entity (i.e. a variable or this) is 
> said to be explicitly captured if it appears in the
> lambda-expression’s capture-list.

But this code successfuly compiled on gcc-4.6.1:
#include <iostream>
int main() {
  using std::cout;
  auto f = [&cout]() { cout << 1; }; // <<
  f();
}

http://liveworkspace.org/code/ae698b7daf7b5b531beafd9faaa6a409


Intel C++ 12.1 says: error : a variable with static storage
duration cannot be captured in a lambda


niXman.

[Bug c++/50736] [C++0x] ISO_IEC_14882-2011-5.1.2/10 - bug

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50736

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-10-15 20:50:58 UTC ---
(of course no need to use <iostream> to test this)

[Bug c++/50736] [C++0x] ISO_IEC_14882-2011-5.1.2/10 - bug

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50736

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> 2011-10-17 18:59:45 UTC ---
Author: jason
Date: Mon Oct 17 18:59:41 2011
New Revision: 180105

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180105
Log:
    PR c++/50736
    * parser.c (cp_parser_lambda_introducer): Check for more
    invalid captures.

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

[Bug c++/50736] [C++0x] ISO_IEC_14882-2011-5.1.2/10 - bug

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50736

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
         AssignedTo|unassigned at gcc dot       |jason at gcc dot gnu.org
                   |gnu.org                     |
   Target Milestone|---                         |4.7.0

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2011-10-17 19:00:58 UTC ---
Fixed for 4.7.